Abstract

A seal (40, 50, 120) for sealing off the end of a liquid-storing chamber, in particular a doctor chamber, with respect to a roll rotating in the chamber, in particular an engraved roll, comprises: a) an elongate main body (10, 20, 100) with an upper face (12, 22, 112), which faces the rotating roll during use, a bottom face (11, 21, 111) opposite the upper face (12, 22, 112), two mutually opposite side faces (13, 14; 23, 24; 113, 114) which during use are perpendicular to the axis of rotation of the rotating roll, and two mutually opposite end faces (15, 16; 25, 26; 115, 116) which during use are parallel to the axis of rotation of the rotating roll; b) wherein the upper face (12, 22, 112) has a contact region (12b, 22b, 112b) for placing the seal (40, 50, 120) onto the rotating roll; c) on the upper face (12, 22, 112) additionally a first bearing region (12a, 22a, 112a) for a working doctor and a second bearing region (12c, 22c, 112c) for a closing doctor are present, wherein the two bearing regions (12a, 22a, 112a, 12c, 22c, 112c) are at an angle to each other; d) on the upper face (12, 22, 112) furthermore an anti-wear element (30, 30', 30'') is mounted which extends at least partially, in particular completely, over the contact region (12b, 22b, 112b), such that the contact region (12b, 22b, 112b) is protected against wear caused by the rotating cylinder, and e) the anti-wear element (30, 30', 30'') is firmly clamped on both sides on the opposite side faces (13, 14; 23, 24; 113, 114) of the main body (10, 20, 100).

IPC Classes  ?

• B41F 31/02 - Ducts, containers, supply or metering devices

Abstract

A doctor blade band is disclosed. The doctor blade may be used for cutting individual doctor blades for printing technology, in particular for gravure printing, flexographic printing and/or screen printing. The doctor blade band includes a flat and elongate base body with a working edge region formed in a longitudinal direction. The doctor blade band has continuous predetermined breaking points running at defined intervals along the longitudinal direction transversely to the longitudinal direction.

IPC Classes  ?

• B41F 15/44 - Squeegees or doctors
• B41F 31/20 - Ink-removing or collecting devices

Abstract

The invention relates to a method for processing a doctor blade, in particular a doctor blade for wiping printing ink off a printing cylinder, comprising a flat and elongated main body made of carbon steel, which has a fastening region and a working edge formed in a longitudinal direction, wherein an edge layer of the working edge of the doctor blade is cured using a laser light beam at least in one section to be processed.

IPC Classes  ?

• B41F 9/10 - Wiping mechanisms with doctors, scrapers, or like devices

Abstract

The invention relates to a doctor blade strip (100, 100') from which individual doctor blades (200.1, 200.2, 200.3) can be cut off for use in printing, more particularly for intaglio printing, flexographic printing and/or screen printing, wherein the doctor blade strip has a flat and elongate main body (101; 301; 401) with a working edge region (102) formed in a longitudinal direction, and is characterized in that the doctor blade strip comprises continuous predetermined breaking points (110.1, 110.2, 110.3; 310; 410) running transverse to the longitudinal direction (L) at defined intervals (A) along the longitudinal direction (L).

IPC Classes  ?

• B41F 9/10 - Wiping mechanisms with doctors, scrapers, or like devices
• B41F 15/44 - Squeegees or doctors
• B41F 31/20 - Ink-removing or collecting devices

Goods & Services

Industrial printing machines and parts thereof

Abstract

A doctor blade (100), in particular for doctoring off printing ink from an impression cylinder, comprises a doctor blade body (110) with a working edge (130) and a first doctor blade side (122) which faces the impression cylinder, in particular, during operation, and a second doctor blade side (121) which faces away from the impression cylinder, in particular, during operation. The doctor blade body (110) is provided with a coating (150) which comprises a polymer, wherein the coating (150) comprises particles (160) at least in one part region. The particles (160) are configured as hard material particles (160), and a mass proportion of the hard material particles (160) in the coating (150) on the first doctor blade side (122) is higher than a mass proportion of the hard material particles (160) in the coating (150) on the second doctor blade side (121).

IPC Classes  ?

• B41F 9/10 - Wiping mechanisms with doctors, scrapers, or like devices

Goods & Services

Parts of printing machines, including doctor blades.

Goods & Services

Parts of printing machines, namely, doctor blades

Abstract

A doctor blade (100), in particular for doctoring off printing ink from an impression cylinder, comprises a doctor blade body (110) with a working edge (130) and a first doctor blade side (122) which faces the impression cylinder, in particular, during operation, and a second doctor blade side (121) which faces away from the impression cylinder, in particular, during operation. The doctor blade body (110) is provided with a coating (150) which comprises a polymer, wherein the coating (150) comprises particles (160) at least in one part region. The particles (160) are configured as hard material particles (160), and a mass proportion of the hard material particles (160) in the coating (150) on the first doctor blade side (122) is higher than a mass proportion of the hard material particles (160) in the coating (150) on the second doctor blade side (121).

IPC Classes  ?

• B41F 9/10 - Wiping mechanisms with doctors, scrapers, or like devices

Abstract

A doctor blade (100), in particular for doctoring off printing ink from an impression cylinder, comprises a doctor blade body (110) with a working edge (130) and a first doctor blade side (122) which faces the impression cylinder, in particular, during operation, and a second doctor blade side (121) which faces away from the impression cylinder, in particular, during operation. The doctor blade body (110) is provided with a coating (150) which comprises a polymer, wherein the coating (150) comprises particles (160) at least in one part region. The particles (160) are configured as hard material particles (160), and a mass proportion of the hard material particles (160) in the coating (150) on the first doctor blade side (122) is higher than a mass proportion of the hard material particles (160) in the coating (150) on the second doctor blade side (121).

IPC Classes  ?

• B41F 9/10 - Wiping mechanisms with doctors, scrapers, or like devices

Goods & Services

Parts of printing machines, including doctor blades.

Goods & Services

Parts of printing machines, namely, doctor blades

Goods & Services

Parts of printing machines, including doctor blades.

Goods & Services

Parts of printing machines, namely, doctor blades

Goods & Services

Machines including accessories, particularly doctor blades, spatulas, scrapers, coating knives, blades for scrapers.

Abstract

A doctor blade for scraping printing ink from a surface of a printing plate, comprising a flat and elongated main body having a working edge area formed in a longitudinal direction, the working edge area being coated with at least one first coating on the basis of a nickel-phosphorus alloy, and is characterized in that the first coating contains at least one additional component for improving the wear behavior of the doctor blade.

IPC Classes  ?

• B41F 9/10 - Wiping mechanisms with doctors, scrapers, or like devices
• B41N 10/00 - Blankets or like coveringsCoverings for wipers for intaglio printing
• B05C 11/04 - Apparatus for spreading or distributing liquids or other fluent materials already applied to a surfaceControl of the thickness of a coating with blades
• B41F 31/04 - Ducts, containers, supply or metering devices with duct-blades or like metering devices

Goods & Services

Parts of printing machines, including doctor blades.

Goods & Services

Parts of printing machines, particularly doctor blades.

Goods & Services

Parts of printing machines, particularly doctor blades

Abstract

A method for producing doctor blades from metal, in particular from steel, the doctor blades to be produced having a reduced material thickness in a region of a working edge. The material thickness is essentially constant in the region of reduced material thickness. By a planing operation being used upon a basic body with an essentially constant material thickness, the region of reduced material thickness is generated. By the region of reduced material thickness being generated by means of a planing operation, an efficient and cost-effective method for the production of doctor blades is achieved.

IPC Classes  ?

• B23P 15/44 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools scraping or shaving tools

Abstract

A doctor blade for wiping printing ink off a surface of a printing plate, comprising a flat and elongated main body having a working edge region configured in a longitudinal direction, the working edge region being covered with a first coating on the basis of a nickel-phosphorus alloy applied by electroless deposition, and hard material particles being dispersed in the first coating, characterized in that the first coating is covered with a second coating on the basis of galvanically deposited nickel.

IPC Classes  ?

• B41F 31/04 - Ducts, containers, supply or metering devices with duct-blades or like metering devices
• B41F 9/10 - Wiping mechanisms with doctors, scrapers, or like devices
• B41N 10/00 - Blankets or like coveringsCoverings for wipers for intaglio printing

Abstract

The invention relates to a doctor blade (100, 200,..., 700), in particular for scraping printing ink from a surface of a printing plate, comprising a flat and elongated main body (110, 210,..., 710) having a working edge area (130, 230,..., 730) formed in a longitudinal direction, the working edge area (130, 230,..., 730) being coated with at least one first coating (150, 250,..., 750) on the basis of a nickel-phosphorus alloy, and is characterized in that the first coating (150, 250,..., 750) contains at least one additional component (160, 360, 460, 660, 760, 761) for improving the wear behavior of the doctor blade.

IPC Classes  ?

• B41N 10/00 - Blankets or like coveringsCoverings for wipers for intaglio printing
• B41F 9/10 - Wiping mechanisms with doctors, scrapers, or like devices
• B41F 31/04 - Ducts, containers, supply or metering devices with duct-blades or like metering devices
• D21G 3/00 - Doctors
• B41F 15/44 - Squeegees or doctors
• B05C 11/04 - Apparatus for spreading or distributing liquids or other fluent materials already applied to a surfaceControl of the thickness of a coating with blades

Goods & Services

Parts of printing machines and papermaking machines, including doctor blades.

Abstract

A doctor blade (100, 200), particularly for wiping printing ink off a surface of a printing plate and/or for use as a paper doctor knife, has a flat and elongated main body (111, 211) including a working edge region (113, 213) configured in a longitudinal direction, wherein at least the working edge region (113, 213) is covered with a first coating (120, 220) on the basis of a nickel-phosphorus alloy. The doctor blade (100, 200) is characterized in that monocrystalline and/or polycrystalline diamond particles (120.1, 220.1) are dispersed in the first coating (120, 220), wherein a particle sizes of the diamond particles (120.1, 220.1) measure at least 5 nm and less than 50 nm.

IPC Classes  ?

• B41F 9/10 - Wiping mechanisms with doctors, scrapers, or like devices

Abstract

A doctor blade (1), particularly for wiping printing ink off a surface of a printing plate, comprising a flat and elongated main body (11) having a working edge region (13) configured in a longitudinal direction, the working edge region (13) being covered with a first coating (20) on the basis of a nickel-phosphorus alloy applied by electroless deposition, and hard material particles (20.1) being dispersed in the first coating (20), characterized in that the first coating (20) is covered with a second coating (21) on the basis of galvanically deposited nickel.

IPC Classes  ?

• B41F 9/10 - Wiping mechanisms with doctors, scrapers, or like devices

Goods & Services

Parts of printing machines, in particular doctor blades.

Goods & Services

Parts of printing machines, namely, doctor blades

Goods & Services

Parts of printing machines, including doctor blades.

Goods & Services

Parts of printing machines, namely, doctor blades

Abstract

A doctor blade, in particular for metering of inks and coatings from an engraved surface, has a flat oblong base body (1a) and a blade region (1c) with a working edge (5) being formed at one of the longitudinal sides of the base body (1a). The blade region (1c) is at least partially made of a plastics material (3, 4), whereas the working edge (5) is formed of the plastics material (3, 4). The base body (1a) is made from a reinforced plastics material (2, 3, 4). The opposing main outer surfaces of the base body (1a) are constituted by plastic layers (3, 4) made from a first material, where at least one inner layer (2) made from a second material having a higher rigidity than the first material is provided in between said plastic layers (3, 4). The doctor blade (1) therefore incorporates structural components of different rigidities, whereas a plastic working edge (5) is provided. This doctor blade (1) is at the same time rigid and non-abrasive. The wear debris is not harmful to the media and the doctor blade (1) provides sealing qualities. Due to the fact that the main outer surfaces of the doctor blade (1) are constituted by the plastics material the doctor blade (1) is not subject to rusting or oxidation and the safety for the user is enhanced.

IPC Classes  ?

• B41F 9/10 - Wiping mechanisms with doctors, scrapers, or like devices
• B41F 31/04 - Ducts, containers, supply or metering devices with duct-blades or like metering devices
• D21G 3/00 - Doctors
• D21G 3/02 - Doctors for calenders

Goods & Services

Parts of printing machines, in particular doctor blades.

Goods & Services

Parts of printing machines, namely, doctor blades

Goods & Services

Parts of printing machines, including doctor blades, included in this class.

Goods & Services

Parts of printing machines, particularly doctor blade.

Goods & Services

Parts for printing machines, namely, doctor blades

Goods & Services

Parts of printing machines, namely, doctor blades

Goods & Services

Parts of printing machines, in particular doctor blades.

Goods & Services

Parts of printing machines, namely doctor blade.

Goods & Services

Parts of printing machines, in particular doctor blades.

Goods & Services

Parts of printing machines, in particular doctor blades.

Goods & Services

Parts of printing machines, particularly doctor blade.

Goods & Services

Parts of printing machines, in particular doctor blades.

Goods & Services

Parts of printing machines, namely, doctor blades

Goods & Services

Parts of printing machines, namely, doctor blades for use in a printing press to doctor ink off a cylinder that rotates during a printing process

Goods & Services

Printing machine parts, in particular squeegees.

Goods & Services

Parts of printing machines, namely, doctor blades

Goods & Services

Printing machines and parts thereof.