KABUSHIKI KAISHA PILOT CORPORATION (ALSO TRADING AS PILOT CORPORATION) (Japan)
THE PILOT INK CO., LTD. (Japan)
Inventor
Satake, Ryosuke
Abstract
Disclosed are: an oil-based ink composition for a writing board, the oil-based ink composition containing at least a pigment, an organic solvent, a polyvinyl acetal resin that is represented by general formula (1) and has a glass transition temperature of 75°C to 120°C inclusive, and a release agent; and a writing utensil which contains the oil-based ink composition for a writing board. In the formula, p, q, r, and s represent composition ratios, p may be 0, but q, r, and s each have a value that is greater than 0, and the sum of p, q, r, and s is 100.
KABUSHIKI KAISHA PILOT CORPORATION (ALSO TRADING AS PILOT CORPORATION) (Japan)
THE PILOT INK CO., LTD. (Japan)
Inventor
Mita Masayuki
Abstract
[Problem] To provide a temperature-sensitive multicolor-changing toy having colors that are richly vivid before and after a color change, and in which changes into multiple colors can be visually recognized sharply and clearly. [Solution] A temperature-sensitive multicolor-changing toy in which a pigment A containing a reversible thermochromic composition a and a pigment B containing a reversible thermochromic composition b are dispersed in a vinyl chloride resin, and the toy is formed with a hollow interior, wherein the reversible thermochromic compositions a and b are such that at the complete color development temperature of one of the reversible thermochromic compositions, the color development concentration of the other reversible thermochromic composition is 40% or less, or at the complete decolorization temperature of one of the reversible thermochromic compositions, the color development concentration of the other reversible thermochromic composition is 60% or more.
KABUSHIKI KAISHA PILOT CORPORATION (ALSO TRADING AS PILOT CORPORATION) (Japan)
THE PILOT INK CO., LTD. (Japan)
Inventor
Sakamoto, Daisuke
Asada, Katsuhisa
Abstract
This writing tool includes: an ink accommodation part capable of accommodating oil-based ink; and a tip part capable of guiding the oil-based ink from the ink accommodation part to a surface to be written to by bringing the tip part into contact with the surface to be written to. The ink accommodation part includes polypropylene and a β-crystal nucleating agent.
KABUSHIKI KAISHA PILOT CORPORATION (also trading as PILOT CORPORATION) (Japan)
THE PILOT INK CO., LTD. (Japan)
Inventor
Ikai, Tomoya
Mabuchi, Misako
Abstract
Please replace the current abstract with the following amended abstract.
Please replace the current abstract with the following amended abstract.
An ink retention member includes an ink retention portion including ink retention grooves and ink guiding grooves. The ink retention member includes a first horizontal hole penetrating radially therethrough and being in communication with an inner hole. The first horizontal hole and the ink guiding grooves are formed not to communicate with each other in a transverse cross-section. The first horizontal hole is provided in a rear half portion of the ink retention portion. The ink retention member includes a second horizontal hole that is disposed forward from the first horizontal hole, radially penetrates therethrough, and communicates with the inner hole. The first horizontal hole and the second horizontal hole are each provided to penetrate at least one comb tooth axially and communicate with the ink retention grooves adjacent to the comb tooth.
KABUSHIKI KAISHA PILOT CORPORATION (ALSO TRADING AS PILOT CORPORATION) (Japan)
Inventor
Tsunekawa, Tomoo
Abstract
The luminous fiber according to the present invention comprises a flat luminous pigment, a coloring pigment, and a resin, wherein: the flat luminous pigment is an iron oxide-coated flat aluminum particle having a flat aluminum particle and an iron oxide layer covering the flat aluminum particle, or is an iron oxide-coated flat silicon dioxide particle having a flat silicon dioxide particle and an iron oxide layer covering the silicon dioxide particle; and the amount of elemental iron in the flat luminous pigment is 5-400 parts by mass with respect luminous pigment.
[Problems] Provided is a discoloring body which is discolored by application of water and has high glossiness and is excellent in applicability to various fields such as a toy field, a decoration field, and a design field.
[Problems] Provided is a discoloring body which is discolored by application of water and has high glossiness and is excellent in applicability to various fields such as a toy field, a decoration field, and a design field.
[Solution] A discoloring body including a supporting body, a porous layer in which a low refractive index pigment is fixed in a dispersed state by way of a binder resin, and a glossy resin layer, in which an occupancy area ratio of the glossy resin layer is 1% to 95% with respect to a 1 cm square at any position in the porous layer.
KABUSHIKI KAISHA PILOT CORPORATION (also trading as PILOT CORPORATION) (Japan)
Inventor
Umemoto, Hiroshi
Maehashi, Kaori
Masushige, Naoto
Morigaki, Yui
Abstract
[Problems] To provide a reversibly thermochromic composition having excellent contrast between a colored state and a decolored state, and excellent light resistance, and a reversibly thermochromic microcapsule pigment encapsulating the reversibly thermochromic composition.
[Problems] To provide a reversibly thermochromic composition having excellent contrast between a colored state and a decolored state, and excellent light resistance, and a reversibly thermochromic microcapsule pigment encapsulating the reversibly thermochromic composition.
[Solution] Disclosed is a reversibly thermochromic composition including: (a) an electron-donating color-developing organic compound; (b) a combination of a compound having a specific structure as an electron-accepting compound; and (c) a reaction medium which reversibly induces an electron transfer reaction between the component (a) and the component (b) in a specific temperature range, and a reversibly thermochromic microcapsule pigment encapsulating the reversibly thermochromic composition.
C09D 5/29 - Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects producedFilling pastes for multicolour effects
KABUSHIKI KAISHA PILOT CORPORATION (also trading as PILOT CORPORATION) (Japan)
Inventor
Umemoto, Hiroshi
Shibata, Toshihiro
Tsunekawa, Tomoo
Morigaki, Yui
Abstract
[Problems] To provided are a reversibly thermochromic composition that shows black during color development by using a fluoran derivative having a specific structure as an electron-donating color-developing organic compound, turns colorless during decoloration, and is excellent in light resistance and a microcapsule pigment encapsulating the reversibly thermochromic composition.
[Problems] To provided are a reversibly thermochromic composition that shows black during color development by using a fluoran derivative having a specific structure as an electron-donating color-developing organic compound, turns colorless during decoloration, and is excellent in light resistance and a microcapsule pigment encapsulating the reversibly thermochromic composition.
[Solution] Disclosed is a reversibly thermochromic composition including: (a) a fluoran derivative having a specific structure as an electron-donating color-developing organic compound; (b) a compound having a specific structure as an electron-accepting compound; and (c) a reaction medium which reversibly induces an electron transfer reaction between the component (a) and the component (b) in a specific temperature range, and a reversibly thermochromic microcapsule pigment encapsulating the reversibly thermochromic composition.
C09D 5/29 - Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects producedFilling pastes for multicolour effects
KABUSHIKI KAISHA PILOT CORPORATION (ALSO TRADING AS PILOT CORPORATION) (Japan)
THE PILOT INK CO., LTD. (Japan)
Inventor
Ikai Tomoya
Mabuchi Misako
Abstract
An ink retention member (4) comprises an ink retention portion (40) composed of ink retention grooves (43) and ink guiding grooves (44). The ink retention member (4) has a first lateral hole (46) penetrating radially therethrough and being in communication with an inner hole (45). The first horizontal hole (46) and the ink guiding grooves (44) are formed so as not to be in communication with each other in a transverse cross-section. The first horizontal hole (46) is provided in the rear-half of the ink retention portion (40). The ink retention member (4) has a second horizontal hole (47) disposed forwardly of the first horizontal hole (46), radially penetrating through the ink retention member (4), and being in communication with the inner hole (45). The first horizontal hole (46) and the second horizontal hole (47) are each provided axially through at least one comb tooth (41) and in communication with an ink retention groove (43) adjacent to the comb tooth (41).
KABUSHIKI KAISHA PILOT CORPORATION (ALSO TRADING AS PILOT CORPORATION) (Japan)
THE PILOT INK CO., LTD. (Japan)
Inventor
Fujita Katsuyuki
Abstract
The present invention provides a reversibly thermochromic microcapsule pigment which easily changes, upon heating, from a decolored state to a colored state and sharply returns again to the decolored state, at a temperature in the range of living environmental temperatures or at a temperature around daily-living temperatures. This reversibly thermochromic microcapsule pigment is one obtained by microencapsulating a reversibly thermochromic composition comprising (A) an electron-donating color-assuming organic compound, (B) a 4-hydroxybenzoic acid ester compound represented by general formula (1) as an electron-accepting compound, (C) a compound, e.g., a chain hydrocarbon, as a reaction medium for reversibly causing electron transfer reactions between the (A) and the (B), (D) a linear dibasic acid compound having 3-22 carbon atoms, and (E) a compound, e.g., an aromatic hydrocarbon, having a melting point of 50°C or higher. (In formula (1), R represents a C12-C22, linear or branched alkyl group.)
KABUSHIKI KAISHA PILOT CORPORATION (ALSO TRADING AS PILOT CORPORATION) (Japan)
THE PILOT INK CO., LTD. (Japan)
Inventor
Kojima Hisaaki
Abstract
This article-containing packaging body is provided with: a front surface part (2) and a rear surface part (3) having a rectangle shape; a fixation part (41) to which the front surface part (2) and the rear surface part (3) are fixed; a bag-shaped part (42) in which an article (7) extending in a longitudinal direction is accommodated; and the article (7). The bag-shaped part (42) is formed by providing the fixation part (41) on at least three sides of the front surface part (2) and the rear surface part (3). At least one of the front surface part (2) and the rear surface part (3) contains a paper base material, and an exposure part (43) at which an inner surface (4) at one end in a longitudinal direction is exposed to the outside is provided on one of the front surface part (2) and the rear surface part (3).
B65D 75/20 - Articles or materials wholly enclosed in single sheets or wrapper blanks in sheets or blanks doubled around contents and having their opposed free margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding
B65D 75/64 - Tabs formed by unsecured portion of wrapper
B65D 85/28 - Containers, packaging elements or packages, specially adapted for particular articles or materials for incompressible or rigid rod-shaped or tubular articles for pencils or pens
12.
METHOD FOR MANUFACTURING RECYCLED RESIN COMPOSITION
KABUSHIKI KAISYA PILOT CORPORATION (ALSO TRADING AS PILOT CORPORATION) (Japan)
THE PILOT INK CO., LTD. (Japan)
Inventor
Ogawa Ayumu
Matsui Hirokazu
Takano Masaki
Nakashima Akio
Umemoto Hiroshi
Abstract
Provided is a method for manufacturing a recycled resin composition, the method enabling horizontal recycling. The method for manufacturing a recycled resin composition includes: a step for melting and kneading a molded body containing a resin base material and a colored layer that includes a coloring material which is irreversibly decolored by thermal stimulus; and a step for irreversibly decoloring by thermal stimulus.
C08J 3/20 - Compounding polymers with additives, e.g. colouring
B32B 27/20 - Layered products essentially comprising synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
C08J 5/00 - Manufacture of articles or shaped materials containing macromolecular substances
A highly marketable reversibly thermochromic composition that provides a black color during color development by using a fluoran derivative having a specific structure as an electron-donating color-developing organic compound, turns colorless during decoloration, and is excellent in contrast between a colored state and a decolored state and a microcapsule pigment encapsulating the same. A reversibly thermochromic composition including: (a) a fluoran derivative having a specific structure as an electron-donating color-developing organic compound; (b) an electron-accepting compound; and (c) a reaction medium which reversibly induces an electron transfer reaction between the component (a) and the component (b) in a specific temperature range, and a reversibly thermochromic microcapsule pigment encapsulating the same.
KABUSHIKI KAISHA PILOT CORPORATION (ALSO TRADING AS PILOT CORPORATION) (Japan)
Inventor
Umemoto Hiroshi
Shibata Toshihiro
Tsunekawa Tomoo
Morigaki Yui
Abstract
[Problem] To provide: a reversible thermochromic composition, in which a fluoran derivative with a specific structure is used as an electron-donating and coloring organic compound and, therefore, which exhibits a black color upon color development and changes to colorless upon decoloration and which has excellent light resistance; and a microcapsule pigment encapsulating the reversible thermochromic composition. [Solution] A reversible thermochromic composition that comprises: (a) a fluoran derivative with a specific structure as an electron-donating and coloring organic compound; (b) a compound with a specific structure as an electron accepting compound; and (c) a reaction medium that reversibly causes an electron transfer reaction between the component (a) and component (b) in a specific temperature range. A reversible thermochromic microcapsule pigment that encapsulates the reversible thermochromic composition.
KABUSHIKI KAISHA PILOT CORPORATION (ALSO TRADING AS PILOT CORPORATION) (Japan)
Inventor
Umemoto Hiroshi
Maehashi Kaori
Masushige Naoto
Morigaki Yui
Abstract
[Problem] To provide: a reversible thermochromic composition that has excellent contrast between a colored state and a colorless state and also has excellent lightfastness; and a reversible thermochromic microcapsule pigment that encapsulates the reversible thermochromic composition. [Solution] A reversible thermochromic composition that includes (a) an organic electron-donating coloring compound, (b) a combination of compounds that have a specific structure and serve as electron-accepting compounds, and (c) a reaction medium that reversibly allows an electron transfer reaction to occur between component (a) and component (b) in a specific temperature range; and a reversible thermochromic microcapsule pigment that encapsulates the reversible thermochromic composition.
KABUSHIKI KAISHA PILOT CORPORATION (ALSO TRADING AS PILOT CORPORATION) (Japan)
Inventor
Fujita Katsuyuki
Umemoto Hiroshi
Abstract
[Problem] To provide: a reversible thermochromic composition that has excellent contrast between a colored state and a colorless state and also has excellent lightfastness when in the colored state; and a reversible thermochromic microcapsule pigment that encapsulates the reversible thermochromic composition. [Solution] A reversible thermochromic composition that includes (a) an organic electron-donating coloring compound, (b) a combination of compounds that have a specific structure and serve as electron-accepting compounds, and (c) a reaction medium that reversibly causes an electron transfer reaction to occur between component (a) and component (b) in a specific temperature range; and a reversible thermochromic microcapsule pigment that encapsulates the reversible thermochromic composition.
B41M 5/00 - Duplicating or marking methodsSheet materials for use therein
B41M 5/28 - Thermography using thermo-chromic compounds or layers containing liquid crystals, microcapsules, bleachable dyes or heat decomposable compounds, e.g. gas liberating
B43K 29/02 - Combinations of writing implements with other articles with rubbers
A thermochromic writing instrument including a writing body, storing a thermochromic ink therein, stored in a barrel; an operation body provided in the barrel to be operated to longitudinally move the writing body; a nib of the writing body configured to be capable of appearing from a front end of the writing instrument, wherein the writing instrument 1 further includes a friction unit, for rubbing handwriting in the thermochromic ink and capable of thermally changing the color of the handwriting by frictional heat generated at that time, and at least one clip body as the operation body, the friction unit 10 is provided at a rear end of the barrel, and the clip body is provided in an area other than the rear end of the barrel.
B43K 24/04 - Mechanisms for selecting, projecting, retracting or locking writing units for locking a single writing unit in only fully projected or retracted positions operated by means sliding in longitudinally-slotted casings
B43K 29/02 - Combinations of writing implements with other articles with rubbers
B43K 29/00 - Combinations of writing implements with other articles
C08K 5/12 - EstersEther-esters of cyclic polycarboxylic acids
C08L 29/14 - Homopolymers or copolymers of acetals or ketals obtained by polymerisation of unsaturated acetals or ketals or by after-treatment of polymers of unsaturated alcohols
19.
Reversibly thermochromic aqueous ink composition and writing instrument using the same
To provide a reversibly thermochromic aqueous ink composition excellent in dispersion stability of a reversibly thermochromic microcapsule pigment and a writing instrument using the same.
Disclosed is a reversibly thermochromic aqueous ink composition comprising a reversibly thermochromic microcapsule pigment encapsulating a reversibly thermochromic composition comprising (a) an electron-donating color-developing organic compound, (b) an electron-accepting compound, and (c) a reaction medium to determine an occurrence temperature of a coloring reaction of the component (a) and the component (b), and a vehicle comprising water and a specific gravity adjuster selected from the group consisting of an oxyacid belonging to Group 6 having an atomic weight of 90 to 185 or salt thereof.
KABUSHIKI KAISHA PILOT CORPORATION (ALSO TRADING AS PILOT CORPORATION) (Japan)
Inventor
Umemoto Hiroshi
Morigaki Yui
Masushige Naoto
Abstract
[Problem] To provide a reversible thermochromic composition, and a microcapsule pigment comprising the same, the reversible thermochromic composition: exhibiting a black color at the time of color development and color changing to colorless when decolorized; having excellent contrast between a color-developed state and a decolorized state; and having a high commercial value, by using a fluoran derivative having a specific structure as an electron-donating coloring organic compound. [Solution] Provided is a reversible thermochromic composition comprising: (a) a fluoran derivative being an electron-donating and coloring organic compound and having a specific structure; (b) an electron accepting compound; and (c) a reaction medium that reversibly causes an electron transfer reaction by means of component (a) and component (b) in a specific temperature range. Also provided is a reversible thermochromic microcapsule pigment comprising the reversible thermochromic composition.
[Problem] To provide a reversible thermochromic microcapsule pigment that exhibits such reversible thermochromic behavior that the pigment easily turns from a colorless state to a color-developing state when being heated in a living environment temperature range or at or near everyday life temperature, and returns to the colorless state, and also exhibits a high color density when the pigment develops color. [Solution] This reversible thermochromic microcapsule pigment comprises (a) an electron-donating color-developing organic compound, (b) a hydroxyphenyl acetic acid ester compound represented by general formula (1) and serving as an electron-accepting compound, (c) a compound selected from chain hydrocarbons, alicyclic hydrocarbons, and halogenated hydrocarbons, as a reaction mediator that reversibly causes an electron transfer reaction between the component (a) and the component (b), and (d) a styrene-based compound having a softening point of 5°C or higher and a mass-average molecular weight of 200-100,000. (In the formula, R represents a straight-chain or branched alkyl group having 12-22 carbon atoms, X, Y, and Z each independently represent hydrogen or a hydroxy group, and two or three of X, Y, and Z are each a hydroxy group)
KABUSHIKI KAISHA PILOT CORPORATION (ALSO TRADING AS PILOT CORPORATION) (Japan)
THE PILOT INK CO., LTD. (Japan)
Inventor
Mita Masayuki
Wakagi Itaru
Abstract
[Problem] To provide a reversible thermochromic microcapsule pigment for ink that is rich in color forming properties and is capable of forming a high-definition reversible thermochromic image, a reversible thermochromic aqueous ink composition using the same, and an ink container accommodating the aqueous ink composition. [Solution] A reversible thermochromic microcapsule pigment for ink in which a reversible thermochromic composition including (a) an electron-donating color-forming organic compound, (b) an electron-accepting compound, and (c) a reaction medium for determining a temperature at which a color reaction of the components (a) and (b) occurs is enclosed in microcapsules, and the microcapsules are characterized by having a zeta potential of a positive or negative value in a microcapsule dispersion composed of only water and the microcapsules.
[Problem] To provide highly safe reversibly thermochromic composite fibres, which reversibly change colour upon a change in temperature, does not allow flames to spread readily even once ignited, and has excellent flame retardance. [Solution] Core/sheath-type reversibly thermochromic composite fibres obtained by providing: a core containing a resin, a reversibly thermochromic pigment and a flame retardant; and a sheath containing a resin and a flame retardant.
D01F 8/06 - Conjugated, i.e. bi- or multicomponent, man-made filaments or the likeManufacture thereof from synthetic polymers with at least one polyolefin as constituent
A thermochromic writing instrument including a writing body, storing a thermochromic ink therein, stored in a barrel; an operation body provided in the barrel to be operated to longitudinally move the writing body; a nib of the writing body configured to be capable of appearing from a front end of the writing instrument, wherein the writing instrument 1 further includes a friction unit, for rubbing handwriting in the thermochromic ink and capable of thermally changing the color of the handwriting by frictional heat generated at that time, and at least one clip body as the operation body, the friction unit 10 is provided at a rear end of the barrel, and the clip body is provided in an area other than the rear end of the barrel.
B43K 24/04 - Mechanisms for selecting, projecting, retracting or locking writing units for locking a single writing unit in only fully projected or retracted positions operated by means sliding in longitudinally-slotted casings
B43K 29/02 - Combinations of writing implements with other articles with rubbers
B43K 29/00 - Combinations of writing implements with other articles
KABUSHIKI KAISHA PILOT CORPORATION (ALSO TRADING AS PILOT CORPORATION) (Japan)
THE PILOT INK CO., LTD. (Japan)
Inventor
Someya Yuki
Abstract
[Problem] The present invention provides a water attaching tool for a water discoloration body and a water discoloration body set with which it is possible to suppress generation of mold at a pen tip even when stored in a cap-attached state after use, and to prevent external leakage of water that has dropped from the pen tip side when carried. [Solution] A water attaching tool comprising a body 2 and a pen tip 3 which is provided at the front end of the body 2 and is made of a porous body or a brush body. A cap 6 is detachably attached to a pen tip-side outer surface of the body 2. The cap 6 is provided with a ventilation hole 61 which provides communication between the inside of the cap 6 and the outer air to promote drying of the pen tip. A leakage preventing portion for preventing external leakage of water dripping from the pen-tip side is provided on an inner surface of the ventilation hole 61 of the cap 6 or on an inner surface in the vicinity of the ventilation hole 61. The leakage preventing portion comprises a protruding wall portion 62 protruding from the inner surface of the cap 6 and surrounding the ventilation hole 61.
KABUSHIKI KAISHA PILOT CORPORATION (ALSO TRADING AS PILOT CORPORATION) (Japan)
THE PILOT INK COMPANY, LIMITED (Japan)
Inventor
Asada Katsuhisa
Abstract
The present invention provides: a highly practical and safe oil-based ink composition for a writing board, said composition being capable of imparting high mark-erasability and having excellent resistance to drying up; and a marking pen incorporating the same. Specifically, the present invention provides: an oil-based ink composition for a writing board, said composition containing a pigment, an organic solvent, a resin, and at least one compound selected from compounds represented by general formula (1) or (2); and a marking pen obtained by incorporating the oil-based ink composition for a writing board. (In the formulae, R1-R4 each represent a C6-18 alkyl group or a C2-18 and O2-10 alkoxypolyglycol group.)
KABUSHIKI KAISHA PILOT CORPORATION (ALSO TRADING AS PILOT CORPORATION) (Japan)
THE PILOT INK CO., LTD. (Japan)
Inventor
Fujita Katsuyuki
Kambe Yasuaki
Mita Masayuki
Yamamura Tomoyuki
Abstract
[Problem] To provide a reversible thermochromic aqueous ink composition that exhibits excellent dispersion stability of a reversible thermochromic microcapsule pigment; and a writing instrument using same. [Solution] A reversible thermochromic aqueous ink composition that contains: a reversible thermochromic microcapsule pigment which is obtained by microencapsulating a reversible thermochromic composition containing (a) an electron-donating color-developing organic compound, (b) an electron-receiving compound, and (c) a reaction medium that determines the temperature at which a color-developing reaction between the component (a) and the component (b) takes place; and a vehicle that contains water and a specific gravity-adjusting agent selected from the group consisting of oxyacids of group 6 elements having atomic weights of 90-185 and salts thereof.
[Problem] To provide a discoloring body that discolors with the application of water, has rich glossiness, and has excellent applicability to various fields such as toys, decorations, and designing. [Solution] A discoloring body is provided with: a support body such as a fabric; a porous layer in which a low refractive index pigment is fixed in a dispersed state by way of a binder resin; and a glossy resin layer, wherein the glossy resin layer has an occupancy area ratio of 1 to 95% relative to a one-centimeter square at any position in the porous layer.
B32B 7/02 - Physical, chemical or physicochemical properties
B32B 5/18 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by features of a layer containing foamed or specifically porous material
[Problem] To provide: a reversibly thermochromic composition which displays a clear yellow to orange color when color-developed and becomes colorless when decolored, and has improved light resistance and high marketability; and a reversibly thermochromic microcapsule pigment in which the reversibly thermochromic composition is enclosed. [Solution] A reversibly thermochromic composition containing (a) an electron-donating color-developable organic compound that is a specific pyridine derivative, (b) an electron-accepting compound and (c) a reaction medium which can reversibly cause an electron transfer reaction between the components (a) and (b) in a specific temperature range; and a reversibly thermochromic microcapsule pigment in which the reversibly thermochromic composition is enclosed.
B41M 5/28 - Thermography using thermo-chromic compounds or layers containing liquid crystals, microcapsules, bleachable dyes or heat decomposable compounds, e.g. gas liberating
B41M 5/323 - Organic colour formers, e.g. leuco dyes
[Problem] To provide a thermochromic color memorizing composition, which effectively exhibits a capability of alternately memorizing and holding colors and is applicable to various fields, and a thermochromic color memorizing microcapsule pigment enclosing the same. [Solution] A thermochromic color memorizing composition which comprises (a) an electron-donating and color-developing organic compound, (b) an electron-receiving compound, and (c) an ester compound represented by formula (1) or formula (2), said ester compound serving as a reaction medium controlling a color-developing reaction between the components (a) and (b), and a thermochromic color memorizing microcapsule pigment enclosing the thermochromic color memorizing composition. [In formula (1): R1's independently represent a cycloalkyl group having 3-8 carbon atoms or a cycloalkylalkyl group having 4-9 carbon atoms; ad n1's independently represent an integer of 1-3] and [in formula (2): R2 represents an alkyl group having 3-17 carbon atoms, a cycloalkyl group having 3-8 carbon atoms or a cycloalkylalkyl group having 5-8 carbon atoms; X represents a hydrogen atom, an alkyl group having 1-5 carbon atoms, a methoxy group, an ethoxy group or a halogen atom; and n2 represents an integer of 1-3].
B43K 29/02 - Combinations of writing implements with other articles with rubbers
C07C 69/608 - Esters of carboxylic acids having a carboxyl group bound to an acyclic carbon atom and having a ring other than a six-membered aromatic ring in the acid moiety
C07C 69/75 - Esters of carboxylic acids having an esterified carboxyl group bound to a carbon atom of a ring other than a six-membered aromatic ring of acids with a six-membered ring
KABUSHIKI KAISHA PILOT CORPORATION (ALSO TRADING AS PILOT CORPORATION) (Japan)
THE PILOT INK CO., LTD. (Japan)
Inventor
Ono, Yoshiaki
Abstract
[Problems] An object of the present invention is to provide: a thermochromic color-memory composition which effectively expresses a property of being able to interchangeably memorize and retain colors and which is thus applicable to various fields; and a thermochromic color-memory microcapsule pigment encapsulating the same.
[Solution] Provided is a thermochromic color-memory composition including: (a) an electron-donating color-developing organic compound; (b) an electron-accepting compound; and (c) an ester compound represented by the following Formula (1), as a reaction medium which controls color reaction between the component (a) and the component (b):
(wherein, R represents an alkyl group having 3 to 18 carbon atoms, a cycloalkylalkyl group having 6 to 11 carbon atoms, a cycloalkyl group having 5 to 7 carbon atoms or an alkenyl group having 3 to 18 carbon atoms; each X independently represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 3 carbon atoms or a halogen atom; and each Y independently represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, a methoxy group, an ethoxy group or a halogen atom).
C09B 67/00 - Influencing the physical, e.g. the dyeing or printing, properties of dyestuffs without chemical reaction, e.g. by treating with solventsProcess features in the making of dyestuff preparationsDyestuff preparations of a special physical nature, e.g. tablets, films
B43L 19/00 - Erasers, rubbers, or erasing devicesHolders therefor
B43K 5/00 - Pens with ink reservoirs in holders, e.g. fountain-pens
A thermochromic writing instrument including a writing body, storing a thermochromic ink therein, stored in a barrel; an operation body provided in the barrel to be operated to longitudinally move the writing body; a nib of the writing body configured to be capable of appearing from a front end of the writing instrument, wherein the writing instrument 1 further includes a friction unit, for rubbing handwriting in the thermochromic ink and capable of thermally changing the color of the handwriting by frictional heat generated at that time, and at least one clip body as the operation body, the friction unit 10 is provided at a rear end of the barrel, and the clip body is provided in an area other than the rear end of the barrel.
B43K 24/04 - Mechanisms for selecting, projecting, retracting or locking writing units for locking a single writing unit in only fully projected or retracted positions operated by means sliding in longitudinally-slotted casings
B43K 29/02 - Combinations of writing implements with other articles with rubbers
B43K 29/00 - Combinations of writing implements with other articles
C09D 11/17 - Writing inks characterised by colouring agents
Component (C): a reaction medium causing reversibly an electron transfer reaction between the Component (A) and the Component (B) in a specific temperature range, water and a thickener.
C09D 11/037 - Printing inks characterised by features other than the chemical nature of the binder characterised by the pigment
C09D 11/107 - Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from unsaturated acids or derivatives thereof
35.
Thermochromic color-memory composition and thermochromic color-memory microcapsule pigment encapsulating same
KABUSHIKI KAISHA PILOT CORPORATION (ALSO TRADING AS PILOT CORPORATION) (Japan)
THE PILOT INK CO., LTD. (Japan)
Inventor
Ono, Yoshiaki
Abstract
Provided are thermochromic color-memory composition and thermochromic color-memory microcapsule pigment encapsulating the same, the thermochromic color-memory composition including: (a) a component composed of an electron-donating color-developing organic compound; (b) a component composed of an electron-accepting compound; and (c) a component composed of an ester compound represented by the following Formula (1) as a reaction medium which controls color reaction between the components (a) and (b):
(wherein, R represents an alkyl group having 3 to 18 carbon atoms or an aliphatic acyl group having 3 to 18 carbon atoms; X represents a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, an alkoxy group having 1 or 2 carbon atoms or a halogen atom; Y represents a hydrogen atom or a methyl group; and Z represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 or 2 carbon atoms or a halogen atom).
[Problem] To provide a thermochromic color-memory composition which can effectively exhibit a property of reversible memory retention of color and which is applicable in a wide variety of fields, and a thermochromic color-memory microcapsule pigment encapsulating the same. [Solution] A thermochromic color-memory composition including (a) an electron-donating coloring organic compound, (b) an electron-accepting compound, and (c) an ester compound represented by formula (1) as a reaction medium for controlling a coloring reaction of the (a) component and the (b) component. (In formula (1), R represents a C3-18 alkyl group, a C6-11 cycloalkyl group, a C5-7 cycloalkyl group, or a C3-18 alkenyl group, X each independently represents a hydrogen atom, a C1-4 alkyl group, a C1-3 alkoxy group, or a halogen atom, and Y each independently represents a hydrogen atom, a C1-4 alkyl group, a methoxy group, an ethoxy group, or a halogen atom.)
KABUSHIKI KAISHA PILOT CORPORATION (ALSO TRADING AS PILOT CORPORATION) (Japan)
THE PILOT INK CO., LTD. (Japan)
Inventor
Ono, Yoshiaki
Abstract
[Problems] An object of the present invention is to provide: thermochromic color-memory composition which effectively expresses a property of being capable of interchangeably memorizing and retaining colors and is thus applicable to various fields; and thermochromic memory microcapsule pigment encapsulating the same.
[Means for Solution] Provided are thermochromic color-memory composition and thermochromic color-memory microcapsule pigment encapsulating the same, the thermochromic color-memory composition comprising: (a) a component composed of an electron-donating color-developing organic compound; (b) a component composed of an electron-accepting compound; and (c) a reaction medium which comprises an ester compound represented by the following Formula (1) and controls color reaction between the components (a) and (b):
(wherein, R represents an alkyl group having 4 to 22 carbon atoms, a cycloalkylalkyl group having 5 to 12 carbon atoms, a cycloalkyl group having 4 to 8 carbon atoms or an alkenyl group having 4 to 22 carbon atoms; X represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms or a halogen atom; and n represents 0 or 1).
Disclosed is a decolorizable electrophotographic toner, including: a binder resin; and a colorant which contains at least a color developable compound and a color developing agent and is covered with an outer shell so as to have a capsule structure, wherein the number ratio of particles having an equivalent circle diameter of 0.6 μm or more and 2.5 μm or less of the toner when measured using a flow particle image analyzer after the toner is dispersed in an aqueous medium at a ratio of 0.08% by weight and the resulting dispersion is subjected to a stirring treatment in which stirring is performed at 5000 rpm for 30 minutes using a homogenizer (T-25 digital ULTRA-TURRAX (manufactured by IKA Japan K.K., provided with a shaft generator S25N-10G)) is 30% by number or less.
[Problem] To provide a color-changing toy house which a child can enter and play with, apply water to form pictures or words, and not lose interest even over an extended period of use with added unexpectedness and changeability of returning to the original state by the water evaporating and drying, and a color-changing toy house set employing the color-changing toy house. [Solution] Provided is a prefabricated color-changing toy house (1), formed from color-changing cardboard (2) in which: cardboard is formed from a core and liners; a waterproof layer is disposed upon a liner surface of the cardboard; and disposed upon the waterproof layer is a porous layer which has differing light transmissivity in an adsorption state and a non-adsorption state and in which a pigment having a low index of refraction is bonded to a binder resin in a diffuse state. Also provided is a color-changing toy house set, formed from the color-changing toy house and a water applicator.
B32B 27/10 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of paper or cardboard
E04C 2/16 - Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the likeBuilding elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of plasticsBuilding elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of foamed products of fibres, chips, vegetable stems, or the like
40.
THERMOCHROMIC COLOR-MEMORY COMPOSITION AND THERMOCHROMIC COLOR-MEMORY MICROCAPSULE PIGMENT INCLUDING SAME
[Problem] To provide a thermochromic color-memory composition which can effectively exhibit properties of interchangeably retaining the memory of color and which is applicable to various fields, and a thermochromic color-memory microcapsule pigment including the same. [Solution] Provided are a thermochromic color-memory composition which comprises (a) an electron donating color former organic compound, (b) an electron-accepting compound, and (c) an ester compound represented by formula (1) as a reaction media that controls the color reaction of (a) and (b), and a thermochromic color-memory microcapsule pigment including the composition. (1) (In the formula, R is one of an alkyl group having 4-22 carbon atoms, an alkenyl group having 4-22 carbon atoms, or a cycloalkylalkyl group having 6-11 carbon atoms, a cycloalkyl group having 5-7 carbon atoms, X is one of a hydrogen atom, alkyl group, alkoxy group, or a halogen atom, Y is one of a hydrogen atom, alkyl group, alkoxy group, or halogen atom, and n is 0 or 1.)
KABUSHIKI KAISHA PILOT CORPORATION (ALSO TRADING AS PILOT CORPORATION) (Japan)
THE PILOT INK CO., LTD. (Japan)
Inventor
Nakashima Akio
Umemoto Hiroshi
Ozawa Taeko
Abstract
[Problem] To provide: an ink composition for reversibly thermochromic stamps, whereby a seal image does not decolor even when left in a high-temperature environment; and a stamp comprising same. [Solution] An ink composition for reversibly thermochromic stamps, containing water, a thickener, and a reversibly thermochromic microcapsule pigment containing therein a reversibly thermochromic composition comprising: a component (A) being an electron-donating color-developing organic compound; a component (B) being an electron-accepting compound; and a component (C) being a reaction medium that reversibly causes an electron exchange reaction between components (A and B) in a specified temperature range. The reversibly thermochromic composition exhibits a first color phase at a complete coloring temperature, exhibits a second color phase at a complete decoloring temperature higher than the complete coloring temperature, is capable of mutually changing coloring by changing the temperature, exhibits hysteresis characteristics whereby one of the color phases is held in a temperature range between the coloring start temperature and the decoloring start temperature, has a coloring start temperature of no more than 15°C, and has a complete decoloring temperature of at least 80°C.
Disclosed here is a method for producing a decolorizable electrophotographic toner, comprising mixing a first dispersion liquid in which a colorant is dispersed in an amount such that the content of the colorant in the toner is from 5% to 35% by weight, with a second dispersion liquid in which particles containing at least a binder resin and having a volume average particle diameter of 500 nm or less are dispersed, aggregating the colorant and the particles containing at least the binder resin, thereby obtaining aggregated particles, fusing the aggregated particles at a temperature lower than a completely decolorizing temperature of the colorant to obtain the toner, and measuring the number ratio of particles having an equivalent circle diameter of 0.6 μm or more and 2.5 μm or less of the toner using a flow particle image analyzer after the toner is subjected to a stirring treatment.
G03G 5/00 - Recording-members for original recording by exposure e.g. to light, to heat, to electronsManufacture thereofSelection of materials therefor
[Problem] To provide a thermochromic color-memory composition which can effectively exhibit a property of memorizing colors photochromically and which is applicable in a wide variety of fields, and a thermochromic color-memory microcapsule pigment having the composition encapsulated therein. [Solution] A thermochromic color-memory composition comprising a component (a) composed of an electron-donating and coloring organic compound, a component (b) composed of an electron-accepting compound, and a component (c) composed of an ester compound represented by formula (1) below as a reaction media for controlling the coloring reaction between the components (a) and (b); and a thermochromic color-memory microcapsule pigment encapsulated therein. (In the formula, R represents a C3-C18 alkyl group or a C3-C18 aliphatic acyl group; X represents a hydrogen atom, a C1-C3 alkyl group, a C1-C2 alkoxy group, or a halogen atom; Y represents a hydrogen atom or a methyl group; and Z represents a hydrogen atom, C1-C4 alkyl group, a C1-C2 alkoxy group, or a halogen atom.)
[Problem] To provide a thermochromic color-memorizing composition that effectively manifests the property of being capable of reversible memorization and retention of color and is suitable for use in a variety of fields, and to provide a thermochromic color-memorizing microcapsule pigment encapsulating the composition. [Solution] Provided is a thermochromic color-memorizing composition comprising (a) a component formed from an electron-releasing coloring organic compound, (b) a component formed from an electron-accepting compound, and (c) a reaction medium for controlling the coloring reaction between (a) and (b) that comprises the ester compound represented by formula (1); also provided is a thermochromic color-memorizing microcapsule pigment encapsulating the composition. (In the formula, R is a C4-22 alkyl group, C5-12 cycloalkyl alkyl group, C4-8 cycloalkyl group, or C4-22 alkenyl group, X is a hydrogen atom, C1-4 alkyl group, C1-4 alkoxy group, or halogen atom, and n is 0 or 1.)
The stamp implement (1) for a water discoloring body of the present invention has: an elastic seal material (10) composed of a fiber processed body or a plastic porous body having continuous pores, the seal material (10) being used for forming a seal image by depositing water on a water discoloring body; and a restricting member (4) for restricting the amount of compression of the seal material (10) during seal imprinting. The seal material (10) has a seal part (12) for forming a seal image on the water discoloring body during seal imprinting and a base part (11) for feeding water to the seal part (12), and is configured so as to cause the seal part (12) to partially protrude from the surface of the base part (11). The seal material (10) is configured so that the distal end of the seal part (12) is caused to protrude outward from the distal end surface on the pressing direction side of the restricting member (4), and so that the surface (11a) of the base part (11) is not allowed to protrude outward from the distal end surface on the pressing direction side of the restricting member (4).
[Problem] To provide a writing implement that is capable of maintaining stable writing performance for a long period, and provides a good writing feeling and handwriting. [Solution] This writing implement is provided with: a nib holding member; a nib attached to one end of the nib holding member; and an ink tank detachably attached to the other end of the nib holding member. A carbonaceous film is formed on at least one of a ball surface and the area of a ball retaining section that comes into contact with the ball, and the carbonaceous film has carbon atoms and oxygen atoms that are bonded to the carbon atoms.
[Problem] Provided are a water-discolored laminated body having many practical uses for expression that has a vivid pigmented layer arranged in the underlayer of a porous layer, moreover, a function for enabling the visual recognition of a vivid and clear image due to the pigmented layer that is not hindered even with the repeated application of water, and permanent satisfactory color fastness due to the application of water; and a method for manufacturing same. [Solution] The method for manufacturing the water-discolored laminated body places a transfer layer including a water-insoluble sublimated dye in contact with a fabric surface, and heats to a temperature above the sublimation initiation temperature of the sublimated dye while applying pressure to transfer the transfer layer to the fabric surface and form the pigmented layer, coats a low refractive index dye on top, dries at a temperature less than the sublimation initiation temperature of the sublimated dye, and forms a porous layer. The present invention relates to a water-discolored laminated body that can be manufactured by this method and a fabric that can be used in the method for manufacturing same.
B32B 37/06 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
B32B 37/22 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating involving the assembly of both discrete and continuous layers
48.
Thermochromic color-memory composition and thermochromic color-memory microcapsule pigment encapsulating the same
KABUSHIKI KAISHA PILOT CORPORATION (ALSO TRADING AS PILOT CORPORATION) (Japan)
THE PILOT INK CO., LTD. (Japan)
Inventor
Ono, Yoshiaki
Abstract
The present invention relates to a thermochromic color-memory composition containing: (I) an electron donating coloring organic compound, (II) an electron accepting compound, and (III) an ester compound represented by the following formula (1) as a reaction medium which controls color reaction of the components (I) and (II):
(in the formula, X represents any of a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, and a halogen atom, m represents an integer of from 1 to 3, and n represents an integer of from 1 to 20).
B41M 5/28 - Thermography using thermo-chromic compounds or layers containing liquid crystals, microcapsules, bleachable dyes or heat decomposable compounds, e.g. gas liberating
Thermochromic color-memorization toner, cartridge including same housed therein, image formation apparatus, cartridge set, and image formation apparatus set
The present invention relates to a photochromic toy which is composed of: a light irradiation unit that is provided with a light source; and a toy main body that contains a photochromic compound. The light source has a peak wavelength within the range from 400 nm to 495 nm. The photochromic compound has a characteristic such that the integrated value (x) of absorbance within a wavelength range from a wavelength less than 400 nm, at said wavelength the absorbance being maximum, to 400 nm and the integrated value (y) of absorbance within a wavelength range from 400 nm to 700 nm satisfy the following formula (1). y/x ≥ 0.02 (1)
KABUSHIKI KAISHA PILOT CORPORATION (ALSO TRADING AS PILOT CORPORATION) (Japan)
THE PILOT INK CO., LTD. (Japan)
Inventor
Fujita, Katsuyuki
Abstract
The present invention relates to a reversibly thermochromic aqueous ink composition comprising: water; a water-soluble organic solvent; a reversibly thermochromic microcapsule pigment which contains a reversibly thermochromic composition comprising: (A) an electron donating coloring organic compound, (B) an electron accepting compound, and (C) a reaction medium which determines temperature at which color reactions between the components (A) and (B) occur; a comb type polymer dispersant having carboxyl groups on its side chains, an organic nitrogen sulfur compound, and a water-soluble resin, a writing instrument using the ink composition, and a writing instrument set comprising the writing instrument and a frictional body.
Disclosed is a thermochromic color-memory composition containing an electron-donating color-developing organic compound (I), an electron-accepting compound (II), and, as a reaction medium for controlling the color developing reaction between the aforementioned (I) and (II), an ester compound (III) represented by formula (1). (In the formula, X represents any of a hydrogen atom, an alkyl group of 1-4 carbon atoms, an alkoxy group of 1-4 carbon atoms, and a halogen atom, m represents an integer between 1-3, and n represents an integer between 1-20.)
KABUSHIKI KAISHA PILOT CORPORATION (ALSO TRADING AS PILOT CORPORATION) (Japan)
THE PILOT INK CO., LTD. (Japan)
Inventor
Ono, Yoshiaki
Abstract
The present invention relates to a thermochromic color-memory composition comprising a solubilized mixture of (I) an electron donating coloring organic compound, (II) an electron accepting compound and (III) an ester compound represented by the following formula (1) as a reaction medium which controls color reactions of the components (I) and (II):
wherein R represents an alkyl group having 1 to 21 carbon atoms or an alkenyl group having 1 to 21 carbon atoms, and n represents an integer of from 1 to 3.
C09K 9/00 - Tenebrescent materials, i.e. materials for which the range of wavelengths for energy absorption is changed as a result of excitation by some form of energy
G02F 1/00 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics
B41M 5/20 - Duplicating or marking methodsSheet materials for use therein using electric current
B41M 5/24 - Ablative recording, e.g. by burning marksSpark recording
54.
REVERSIBLY THERMOCHROMIC AQUEOUS INK COMPOSITION FOR USE IN BALLPOINT PEN, AND BALLPOINT PEN REFILL AND BALLPOINT PEN EACH USING SAME
Disclosed are a reversibly thermochromic aqueous ink composition for use in a ballpoint pen, which comprises a microcapsule pigment obtained by enclosing a reversibly thermochromic composition as a coloring agent, and which has excellent drying resistance, can permanently form good handwriting, and is very suitable for practical use, and a ballpoint pen refill and a ballpoint pen each using same. More specifically disclosed are a reversibly thermochromic aqueous ink composition for use in a ballpoint pen, comprising a microcapsule pigment obtained by enclosing a reversibly thermochromic composition containing (i) an electron-donating color-forming organic compound, (ii) an electron-accepting compound, and (iii) a reaction medium which controls a color-forming reaction between the compound (i) and the compound (ii) in microcapsules, water, a polysaccharide, and smectite, and a ballpoint pen refill and a ballpoint pen each using same.
B43K 24/02 - Mechanisms for selecting, projecting, retracting or locking writing units for locking a single writing unit in only fully projected or retracted positions
B43K 24/10 - Mechanisms for selecting, projecting, retracting or locking writing units for selecting, projecting and locking several writing units
Provided is a thermochromic writing tool (1) configured so that a writing body (9) storing a thermochromic ink thereinside is housed in a shaft tube (2), the writing body (9) is moved in the forward/backward directions by operating an operation body provided on the shaft tube (2), and a pen tip (91) of the writing body (9) can project/recede from the tip end of the writing tool; wherein the thermochromic writing tool (1) is provided with a friction unit (10) capable of applying friction to an object handwritten by the thermochromic ink and changing the color of the handwritten object by the frictional heat caused thereby, and a clip body (7) functioning as at least an operation body; and wherein the friction unit (10) is arranged at the rear end of the shaft tube (2), and the clip body (7) is arranged at a portion of the shaft tube (2) other than the rear end.
B43K 24/04 - Mechanisms for selecting, projecting, retracting or locking writing units for locking a single writing unit in only fully projected or retracted positions operated by means sliding in longitudinally-slotted casings
B43K 7/12 - Ball-point pens with retractable ball points
Disclosed is a decoration manufacturing device (1) for manufacturing a decoration provided with: a roughly ring-shaped core (83) formed by joining the ends of a stretchable cord-like object (46) that has a rubber-like elasticity; and a decoration body (83) disposed around the core, both ends of said decoration body being placed up against each other with the decoration body in an axially contracted state. The decoration manufacturing device (1) is provided with a long, rigid support (5) that can be inserted through the decoration body (83) and can lock the joining parts (47M and 47F) on both ends of the cord-like object (46) with said joining parts (47M and 47F) separated from each other.
THERMOCHROMIC COLOR-MEMORIZATION TYPE TONER, CARTRIDGE INCLUDING SAME HOUSED THEREIN, IMAGE FORMATION APPARATUS, CARTRIDGE SET, AND IMAGE FORMATION APPARATUS SET
Provided is a thermochromic color-memorization type toner having a function whereby the image formed on a copy can be kept either at a color-developed state or at a decolored state. Disclosed is a thermochromic color-memorization type toner which comprises both a microencapsulated pigment that comprises microcapsules containing a thermochromic color-memorization type composition enveloped therein, and a binder resin, and which exhibits such hysteresis characteristics that in a temperature-rise process where the temperature of the pigment in a color-developed state is raised, the decoloration of the pigment begins at a temperature t3, and the pigment is kept in a decolored state at a temperature region not lower than a temperature t4 which is higher than t3, while in a temperature-drop process where the temperature of the pigment in a decolored state is lowered, the color development of the pigment begins at a temperature t2 which is lower than t3, and the pigment is kept in a color-developed state in a temperature region not higher than a temperature t1 which is lower than t2, whereby a color-developed state and a decolored state can be alternatively sighted in a temperature region between t2 and t3, with t1 being -50 to 0°C, and t4 being 50 to 150°C. Also disclosed are: a cartridge including the toner housed therein; an image formation apparatus; a cartridge set; and an image formation apparatus set.
Disclosed is a ballpoint pen tip (1) wherein a ball (3) is rotatably held by a plurality of inwardly projecting sections (4) formed by pressing and deforming radially inward a side wall (20) close to the tip of a metallic pipe (2) and a tip end (22) formed by pressing and deforming radially inward the tip of the pipe. A front-side lateral area (40) of each inwardly projecting section (4) facing the ball has a shape of nearly a triangular pyramid, which is provided with one front-side ridge (42) extending from the top (41) to a pipe inner periphery surface (20a) and two lateral-side ridges (45) extending from the top (41) to the pipe inner periphery surface (20a) so as to expand and open from each other. In the areas from the front-side ridge (42) to the respective lateral-side ridges (45), two generally flat front-side lateral surfaces (46) extending from the top (41) to the pipe inner periphery surface (20a) are arranged. At the front-side ridge (42), a ball pedestal (43) for supporting the ball is formed.
A reversibly thermochromic aqueous ink composition comprising water, a water-soluble organic solvent, a reversibly thermochromic microcapsule pigment, a comb-shaped polymeric dispersant having a carboxyl group in a side chain thereof, a nitrogen- and sulfur-containing organic compound, and a water-soluble resin, wherein a reversibly thermochromic composition comprising (A) an electron-donating color-developing organic compound, (B) an electron-accepting compound and (C) a reaction medium that determines the temperature at which the color-developing reaction between the components (A) and (B) occurs is encapsulated in the reversibly thermochromic microcapsule pigment; a writing instrument produced using the ink composition; and a writing instrument set comprising the writing instrument and a friction body.
A water-based ballpoint pen using a cemented carbide ball comprising tungsten carbide and a metal binder as a writing front end, wherein cobalt and/or nickel are contained in the cemented carbide ball as the metal binder in an amount of 1 to 20% by weight based on the total amount of the ball and which further includes an aqueous ink composition containing a colorant, water, a phosphate ester-based surfactant, and any one or more compounds of a thiadiazole represented by formula (1), 5-mercapto-3-phenyl-1,3,4-thiadiazole-2-thione or a salt thereof, and an oligomer of 2,5-dimercapto-1,3,4-thiadiazole:
2, and SM, and M represents any of hydrogen, an alkali metal, an ammonium, and an alkanolamine.
KABUSHIKI KAISHA PILOT CORPORATION (ALSO TRADING AS PILOT CORPORATION) (Japan)
THE PILOT INK CO., LTD. (Japan)
Inventor
Fujita, Katsuyuki
Abstract
To provide a reversible thermal discoloration aqueous ink composition which is capable of suppressing the lightening and deepening of handwriting at the time when a writing implement containing the reversible thermal discoloration aqueous ink composition in the barrel, and particularly, which does not lighten the color of handwriting with time in an erecting state or does not lighten the color of handwriting by the application of vibration at transportation or at the time when it is carried on in an erecting state, as well as a writing implement using the same and a writing implement set.
A reversible thermal discoloration aqueous ink composition comprising water, a reversible thermal discoloration microcapsule pigment including a reversible thermal discoloration composition composed of (A) an electron donative coloring organic compound, (B) an electron accepting compound and (C) a reaction medium which determines a temperature at which color reactions of the both compounds occur, a polymer flocculant, a comb-type polymer dispersant having a carboxyl group at the side chain, an organic nitrogen sulfur compound, and a water-soluble resin; a writing implement 1 using the ink composition; and a writing implement set comprising the writing implement and a frictional body.
Disclosed is a thermochromic color-memory composition comprising a compatibilized blend of (I) an electron-releasing, color-developing organic compound, (II) an electron-accepting compound, and (III) an ester compound represented by formula (1) as a reaction medium for controlling the color-developing reaction between the compounds (I) and (II). (In the formula, R represents an alkyl group having 1 to 21 carbon atoms, or an alkenyl group having 1 to 21 carbon atoms; and n represents an integer of 1 to 3.)
KABUSHIKI KAISHA PILOT CORPORATION (ALSO TRADING AS PILOT CORPORATION) (Japan)
THE PILOT INK CO., LTD. (Japan)
Inventor
Ono, Yoshiaki
Abstract
The present invention provides a thermochromic coloring color-memory composition which effectively produce a characteristic that colors can be reversibly memorized and maintained and has applicability to various fields and a thermochromic coloring color-memory microcapsule pigment containing the composition.
A thermochromic coloring color-memory composition comprising a homogeneous solubilized mixture of (A) an electron donative coloring organic compound, (B) an electron accepting compound and (C) a compound represented by the following formula (1) as a reaction medium which controls color reactions of the components (A) and (B):
wherein X represents any of a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, a methoxy group, and a halogen atom, m represents an integer of from 1 to 3, and n represents an integer of from 1 to 20.
KABUSHIKI KAISHA PILOT CORPORATION (ALSO TRADING AS PILOT CORPORATION) (Japan)
Inventor
Imamura, Yoshinori
Sekine, Nobuo
Ando, Masashi
Abstract
A thermochromic writing instrument contains a thermochromic ink, wherein a writing body 8 is accommodated in a barrel 2 movably in a longitudinal direction, an operation portion 5 is provided on the outer surface of the barrel 2, and a pen tip 81 of the writing body 8 is constituted so as to be projectable/retractable from/into a front-end hole 31 of the barrel 2 by operating the operation portion 5. The thermochromic ink 83 is contained in the inside of the writing body 8, the pen tip 81 capable of ejecting the thermochromic ink 83 is provided at the front end of the writing tool, and a friction portion 4 capable of thermally changing the color of the handwriting of the thermochromic ink 83 by the frictional heat generated when the handwriting is rubbed with the friction portion 4 is provided on the outer surface of the barrel 2.
An attractive multi-color writing implement capable of producing a multi-colored written trace by using a single implement tip, having characteristics capable of producing a written trace of multiple colors formed at the same time in a single writing action, and capable of producing visually appealing written traces despite the use of a general-purpose structure. A multi-color writing implement (1) having a fiber tip, a felt tip, or a plastic tip (3) connected to one end or opposite ends of an ink occluding element (2) contained in a shaft tube (4). Pigment-based ink (21, 22) of different colors is placed in the ink occluding element (2) in the longitudinal direction thereof.
A water based ink composition for a ballpoint pen containing ι-carrageenan in addition to a dye, water and a water-soluble organic solvent. When used in the ball point pen, the ink composition satisfies an ink drooling prevention and a drying resistance which are mutually incompatible functions and is excellent in writing performance regardless of containing a dye as a coloring agent. The ink composition (c) is used, for example, by accommodating a refill (12) whose ink accommodating tube (18) is filled with the ink composition and which is further loaded with an ink backflow-preventing member (20) in the ballpoint pen (10) whose writing edge is retracted and extruded from a front end opening of a barrel (21).
To provide a water-based ballpoint pen with a good feel while writing, which hardly causes the proceeding of ball corrosion with time and can maintain an excellent lubrication performance at writing. A water-based ballpoint pen using a cemented carbide ball comprising tungsten carbide and a metal binder as a writing front end, wherein cobalt and/or nickel are contained in the cemented carbide ball as the metal binder in an amount of 1 to 20% by weight based on the total amount of the ball and which further includes an aqueous ink composition containing a colorant, water, a phosphate ester-based surfactant, and any one or more compounds of a thiadiazole represented by formula (1), 5-mercapto-3-phenyl-1,3,4-thiadiazole-2-thione or a salt thereof, and an oligomer of 2,5-dimercapto-1,3,4-thiadiazole: wherein X and Y each represents any substituent of CH3, NH2, and SM, and M represents any of hydrogen, an alkali metal, an ammonium, and an alkanolamine.
To provide a reversible thermal discoloration aqueous ink composition which is capable of suppressing the lightening and deepening of handwriting at the time when a writing implement containing the reversible thermal discoloration aqueous ink composition in the barrel, and particularly, which does not lighten the color of handwriting with time in an erecting state or does not lighten the color of handwriting by the application of vibration at transportation or at the time when it is carried on in an erecting state, as well as a writing implement using the same and a writing implement set. A reversible thermal discoloration aqueous ink composition comprising water, a reversible thermal discoloration microcapsule pigment including a reversible thermal discoloration composition composed of (A) an electron donative coloring organic compound, (B) an electron accepting compound and (C) a reaction medium which determines a temperature at which color reactions of the both compounds occur, a polymer flocculant, a comb-type polymer dispersant having a carboxyl group at the side chain, an organic nitrogen sulfur compound, and a water-soluble resin; a writing implement 1 using the ink composition; and a writing implement set comprising the writing implement and a frictional body.
KABUSHIKI KAISHA PILOT CORPORATION (ALSO TRADING AS PILOT CORPORATION) (Japan)
THE PILOT INK CO., LTD. (Japan)
Inventor
Nakashima, Akio
Sasada, Atsushi
Abstract
A color-change laminate in which a color tone derived from a porous layer is visually perceived in a dry state and a metallic lustrous property is visually perceived in a liquid-absorbed state of the porous layer caused by water application is excellent in luminance and which satisfies both of changing properties and decorative properties in the dry state and in the liquid-absorbed state. A color-change laminate includes a support having a metallic lustrous property and a porous layer provided on the surface of the support. The porous layer includes a low-refractive-index pigment and a transparent metallic lustrous pigment formed by coating a transparent core material with a metal oxide and/or a transparent metallic lustrous pigment having a color-flopping property all fixed onto a binder resin in a dispersed state and is different in transparency in a liquid-absorbed state and in a liquid-unabsorbed state.
B32B 5/16 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by features of a layer formed of particles, e.g. chips, chopped fibres, powder
A water-based ink composition for ballpoint pens which ensures smooth writing at the early stage and after time passage, shows no faint part in handwriting and can sustain a stable writing performance to thereby give favorable handwriting continuously. Namely, a water-based ink composition for ballpoint pens wherein a coloring agent is dissolved or dispersed in an aqueous vehicle. It contains a shear-thinning tackifier and the aqueous vehicle contains a water-soluble organic solvent which substantially comprises a solvent showing a solubility parameter (SP) of about 8 to about 11. In this composition, the content of the shear-thinning tackifier is from about 0.1 to about 20% by mass while the content of the water-soluble organic solvent is from about 1 to about 20% by mass, and the shear-thinning tackifier/ water-soluble organic solvent ratio (by mass) is from about 1/1 to about 1/40.
A water-based ink composition for ballpoint pens which ensures smooth writing at the early stage and after time passage, shows no faint part in handwriting and can sustain a stable writing performance to thereby give favorable handwriting continuously. Namely, a water-based ink composition for ballpoint pens wherein a coloring agent is dissolved or dispersed in an aqueous vehicle. The aqueous vehicle substantially consists of water and is free from water-soluble organic solvents. It contains a shear-thinning tackifier together with a thickening-controlling agent. This thickening-controlling agent is one or more members selected from the group consisting of a polyalkylene glycol, a polypropylene glycol derivative, polyvinyl alcohol, polyvinylpyrrolidone, a cellulose-derived high molecule compound, a high molecule compound having a polyalkylene oxide group and/or a surfactant having a polyoxyethylene group.
Disclosed are: a thermochromic color-memory composition which can effectively exhibit a property of memorizing colors photochromically, and which is applicable in a wide variety of fields; and a thermochromic color-memory microcapsule pigment having the composition encapsulated therein. Specifically disclosed are: a thermochromic color-memory composition comprising a homogenously compatibilized blend of (i) an electron-releasing, color-developing organic compound, (ii) an electron-accepting compound, and (iii) a compound represented by the formula (1) as a reaction medium for controlling the color-developing reaction between the compounds (i) and (ii); and a microcapsule pigment having the composition encapsulated therein. (1) wherein X represents any one selected from a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, a methoxy group and a halogen atom; m represents an integer of 1 to 3; and n represents an integer of 1 to 20.
A thermally changeable color writing tool used for writing letters whose color can be thermally changed by friction, quickly brought into a writing-capable state (pen-point projecting state) or a stored state (pen-point retracted state) even if the user can use only one hand, and containing a thermally changeable color ink. The thermally changeable color wiring tool contains a thermally changeable color ink, comprises a barrel (2) accommodating a writing body (8) movably axially and having an operating portion (5) at the outer surface of the barrel (2). The pen point (81) of the writing body (8) can be projected/retracted from/into the front end hole (31) of the barrel (2) by operating the operating portion (5). The thermally changeable color ink (83) is contained inside the writing body (8). The pen point (81) capable of ejecting the thermally changeable color ink (83) is provided to the front end of the writing tool (8), and a friction portion (4) capable of changing the color of the writing done in the thermally changeable color ink (83) by the frictional heat generated when the writing is rubbed with the friction portion (4) is provided on the outer surface of the barrel (2).
B43K 7/12 - Ball-point pens with retractable ball points
B43K 24/06 - Mechanisms for selecting, projecting, retracting or locking writing units for locking a single writing unit in only fully projected or retracted positions operated by turning means
B43K 24/08 - Mechanisms for selecting, projecting, retracting or locking writing units for locking a single writing unit in only fully projected or retracted positions operated by push-buttons
B43K 24/12 - Mechanisms for selecting, projecting, retracting or locking writing units for selecting, projecting and locking several writing units operated by means sliding in longitudinally-slotted casings
Disclosed is an aqueous ink composition for a ballpoint pen, which comprises a dye, water, a water-soluble organic solvent, and 蹡-carrageenan. When used in a ballpoint pen, the ink composition satisfies a drooling property and desiccation resistance which are mutually contradictory properties and has excellent marking performance in spite of containing a dye as a coloring agent. For practical use, the ink composition (C) is charged into an ink-reservoir (18), a backflow-preventing material (20) is further charged over the ink composition (C) to form an ink cartridge (12), and the ink cartridge (12) is included in a ballpoint pen (10) which is adapted so that a pen tip can be retracted and extruded from the front opening of a tubular body (21).
KABUSHIKI KAISHA PILOT CORPORATION (ALSO TRADING AS PILOT CORPORATION) (Japan)
Inventor
Ito, Yoshihiro
Ohkawa, Shouichi
Fujita, Katsuyuki
Abstract
A friction body that produces frictional heat allowing development, disappearance or change of color of handwriting formed with a writing instrument for producing thermochromic handwriting, with the friction body having a friction coefficient of 0.2 to 1.0 when rubbed against paper surface, and a writing instrument for use in forming thermochromic handwriting which is equipped with the friction body and a writing instrument set including the friction body and a writing instrument for use in forming thermochromic handwriting.
Provided are a writing implement lower in cost than conventional writing implements using ink whose color changes by frictional heat, slim and not voluminous because of it being a type receiving ink directly in a barrel, and having excellent portability, and a writing implement set. The ink (2) losing, developing, or changing its color when heated and an ink follow-up body (5) moving forward as the ink is consumed are directly contained in the barrel (2). The writing tip (3) is fixed to the forward end of the barrel directly or via a relay member. The writing implement (1) has an elastic frictional body (6) provided at the rear end of the barrel. The writing implement set is composed of writing implements of the invention and the writing implements have different colors.
KABUSHIKI KAISHA PILOT CORPORATION (ALSO TRADING AS PILOT CORPORATION) (Japan)
THE PILOT INK CO., LTD. (Japan)
Inventor
Nakashima, Akio
Abstract
2. The water-discoloring wall adhering material has excellent convenience at the time of production and use, promptly forms clear image to perceive, and is difficult to fall down when adhered to a wall.
B32B 9/04 - Layered products essentially comprising a particular substance not covered by groups comprising such substance as the main or only constituent of a layer, next to another layer of a specific substance
A direct-fluid-supply writing implement has a pentip, an ink occlusion body connected to a rear end of the pentip, an ink tank that directly stores ink and is arranged at a rear of the ink occlusion body, a plurality of communication tubes that connects the ink tank to the ink occlusion body and a partition wall provided between the ink occlusion body and the ink tank. Forward end portions of the communication tubes are protruded forward from a front face of the partition wall, and are located inside the ink occlusion body. At least one of the communication tubes is provided such that a rear end of the communication tube is protruded backward from a rear face of the partition wall and is located inside the ink tank.
A drawing toy (1) full of game characteristics in which a character or a pattern formed by applying water is viewed as an image having brightness, comprises a drawing body (2) produced by providing, on the surface of a translucent support (3), a porous layer (4) formed by bonding low refractive index pigment to binder resin under dispersed state and exhibiting different transparencies under liquid absorption state and liquid nonabsorpton state, and a light source (5) for irradiating the back of the drawing body with light. The drawing toy set comprises a drawing toy (1) and a water applying tool (15).
B44F 1/06 - Designs or pictures characterised by special or unusual light effects produced by transmitted light, e.g. transparencies, imitations of glass-paintings
G02F 1/17 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour based on variable-absorption elements not provided for in groups
A multi-refill writing instrument includes a barrel, writing bodies accommodated in the barrel so as to be movable back and forth, elastic bodies urging the writing bodes backward, operating bodies connected to rear ends of the corresponding writing bodies and window holes formed in a side wall of the barrel so as to extend in the axial direction. The operating bodies protrude from the barrel to an outside through the window holes in the radial direction, one of the operating bodies slides forward along the window hole so that a nib of the writing body connected to the one operating body protrudes from the barrel through a front hole, and a nib of another writing body in a protruding state is retracted into the barrel, and the writing bodies and the operating bodes are pulled out from the barrel and inserted into the barrel.
KABUSHIKI KAISHA PILOT CORPORATION (ALSO TRADING AS PILOT CORPORATION) (Japan)
THE PILOT INK CO., LTD. (Japan)
Inventor
Senga, Kuniyuki
Fujita, Katsuyuki
Koide, Shigehiro
Abstract
A reversible thermochromic display article which comprises a substrate and, formed thereon, a heat coloration image containing a heat coloration type reversible thermochromic composition which is colored by heating and is decolored by cooling and a heat decoloration image containing a heat decoloration type reversible thermochromic composition which is decolored by heating and is colored by cooling, or having a multilayer structure comprising a heat coloration layer containing the heat coloration type reversible thermochromic composition and a heat decoloration layer containing the heat decoloration type reversible thermochromic composition, wherein the heat coloration type reversible thermochromic composition is a microcapsule composition which contains, enclosed therein, (a) an electron-donating chromatic organic compound, (b)′ an electron-accepting compound selected from gallic acid esters, and (c) a reaction medium having a melting point lower than 50° C. which is selected from alcohols, esters, ketones, and hydrocarbons and which causes color reactions between the two components to occur reversibly at specific temperatures.
The outer surface of an inner cap 3 is fixedly secured to the inner surface of an outer cap 4. In the opened end portion of the inner cap 3, there is formed a rear end shell portion 31 which projects backwardly. On the outer peripheral surface of the rear end shell portion 31, there is provided a ring-shaped outward facing seal portion. In the front end portion of a barrel 6, there is formed a front end shell portion 61 projecting forwardly. In the inner peripheral surface of the front end shell portion 61, there is formed a ring-shaped inward facing seal portion. When a cap 2 is mounted on the pen tip 8 side of the barrel 6, the outward facing seal portion can be closely contacted with the inward facing seal portion in the radial direction.
KABUSHIKI KAISHA PILOT CORPORATION (ALSO TRADING AS PILOT CORPORATION) (Japan)
THE PILOT INK CO., LTD. (Japan)
Inventor
Ono, Yoshiaki
Fujita, Katsuyuki
Abstract
A thermochromic coloring color-memory composition comprising a homogeneous solubilized mixture of (A) an electron donative coloring organic compound, (B) an electron accepting compound and (C) a compound represented by the specific formula as a reaction medium which controls color reactions of the components (A) and (B).
A water-based ink composition for ballpoint pen, which comprises at least a colorant, water, a shear-thinning tackifier and a thickening inhibitor, wherein a ratio (x) of a viscosity after evaporation of 40 wt % of water from the total ink amount to an initial ink viscosity (as measured by EMD viscometer at 1 rpm and 20° C.) is 2 or less; and a ballpoint pen comprising the same.
an ink occluding element connected to a rear end of the pentip, the ink occluding element including a high-density portion, and a low density portion continuously connected to a rear of the high density portion, an ink tank disposed at rear of the ink occluding element and adapted to directly store ink and pluralities of communicating tubes connecting the ink tank with the ink occluding element, the respective communicating tubes including an opened front end, wherein the front end of the communicating tube and the rear end of the pentip connect with the high-density portion.
B43K 5/00 - Pens with ink reservoirs in holders, e.g. fountain-pens
86.
Color-memorizing photochromic writing instrument, color-memorizing photochromic writing instrument set using the same and method for alternately expressing color-memorizing photochromic function of writing image
A color-memorizing photochromic writing instrument, which comprises a writing tip portion connected to a light-shielding tubular member or refill; and a color-memorizing photochromic ink, wherein the ink is prepared by dissolving, dispersing or suspending a diarylethene photochromic compound in a vehicle containing at least a solvent and a binder, wherein the diarylethene photochromic compound is in a coloring state, and a color-memorizing photochromic writing instrument set comprising the writing instrument and a color-changing means.
A water-based ballpoint pen including a specific aqueous ink, a ball, a ballpoint pen tip that holds the ball at a front end of the ballpoint pen tip, an ink follower following the ink with consumption of the ink, and an ink container directly containing the ink and the ink follower. The ink container communicates with a rear portion of the tip. The ink follower includes at least a base oil and a thickener. The ball point pen tip discharges the ink from the top end portion. The ink container supplies the ink to the tip.
KABUSHIKI KAISHA PILOT CORPORATION (ALSO TRADING AS PILOT CORPORATION) (Japan)
THE PILOT INK CO., LTD. (Japan)
Inventor
Fujita, Katsuyuki
Abstract
A thermochromic coloring color-memory composition which comprises a homogeneous solubilized mixture of (A) an electron donative coloring organic compound, (B) an electron accepting compound and (C) an ester compound represented by the specific formula as a reaction medium which controls color reactions of the components (A) and (B).
F21V 9/08 - Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for producing coloured light, e.g. monochromaticElements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for reducing intensity of light
