Techniques for characterizing an optical system (for example, a printer verifier) are provided. In this regard, the optical system may be characterized for scanning a printer image. The characterization of the optical system includes determining an effective aperture size of the optical system, and correspondingly an effective resolution at which the optical system can be configured to scan a portion of the printer image according to verification requirements.
G06K 7/10 - Methods or arrangements for sensing record carriers by electromagnetic radiation, e.g. optical sensingMethods or arrangements for sensing record carriers by corpuscular radiation
G06K 5/00 - Methods or arrangements for verifying the correctness of markings on a record carrierColumn-detection devices
G06K 7/14 - Methods or arrangements for sensing record carriers by electromagnetic radiation, e.g. optical sensingMethods or arrangements for sensing record carriers by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
G06K 19/06 - Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
H04N 1/00 - Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmissionDetails thereof
2.
Autocorrection for uneven print pressure on print media
A printer may be used to print on print media, such as labels, where the print media, as fed through the print, spans substantially less than the full width of the printhead and platen. This may result in uneven print pressure across the print media during the print process. The uneven print pressure, in turn, may result in an uneven print density on the print media, which causes poor print quality. A system and method is employed with identifies the uneven print pressure, and compensates for the uneven print pressure to ensure consistent print density and good print quality. Along segments of the printhead which apply a below average pressure to the print media, the printhead is configured to apply a proportionately higher density of an appropriate contrast-inducing element, such as ink or heat. Along segments of the printhead which apply an above average pressure to the print media, the printhead is configured to apply a proportionately lower density of an appropriate contrast-inducing element, such as ink or heat.
A printer may be used to print on print media, such as labels, where the print media, as fed through the print, spans substantially less than the full width of the printhead and platen. This may result in uneven print pressure across the print media during the print process. The uneven print pressure, in turn, may result in an uneven print density on the print media, which causes poor print quality. A system and method is employed with identifies the uneven print pressure, and compensates for the uneven print pressure to ensure consistent print density and good print quality. Along segments of the printhead which apply a below average pressure to the print media, the printhead is configured to apply a proportionately higher density of an appropriate contrast-inducing element, such as ink or heat. Along segments of the printhead which apply an above average pressure to the print media, the printhead is configured to apply a proportionately lower density of an appropriate contrast-inducing element, such as ink or heat.
A media holder assembly(11) includes a base(13) secured to a platform(15). The platform(15) has a central cylindrical depression(16). A first hub(20) protrudes from the center of the depression(16). A first spring(24), concentric to the first hub(20) biases a second, ring-shaped hub(30) which is fitted over the first spring(24). The second hub(30) is slidably engaged to the first hub(20). A second spring(26), concentric to the first hub(20) and sized to fit around the second hub(30), biases a third, ring-shaped hub(40) which is fitted over the second spring(26). The third hub(40) is slidably engaged to the second hub(30) and to the inner wall(17) of the cylindrical depression(16). The first hub(20), the second hub(30), and the third hub(40) are sized to accommodate media rolls of different sizes.
Sealing assemblies for preventing water intrusion into the interior of a casing are provided. In one exemplary implementation, a water-resistant casing comprises a sealing element over-molded on a wall, wherein the sealing element includes a first feature and a second feature. The water-resistant casing includes a top section constrained in a lower position by the first feature of the sealing element. The water-resistant casing further includes a bottom section constrained in an upper position by the second feature of the sealing element.
A printer is operable for marking an image on a media substrate. The printer includes a housing and a printhead. The printhead is operable for marking the image on a surface of the media substrate held in proximity therewith by a weight of a supply of the media substrate from which the media substrate is fed. The media substrate supply is disposed in the housing over the printhead.
B41J 25/312 - Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface with print pressure adjustment mechanisms, e.g. pressure-on-the-paper mechanisms
B41J 25/00 - Actions or mechanisms not otherwise provided for
B41J 3/407 - Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
B41J 15/04 - Supporting, feeding, or guiding devicesMountings for web rolls or spindles
B41J 3/01 - Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for special character, e.g. for Chinese characters or barcodes
Printing symbols on media is described. Sequential parts of a symbol are marked onto each of multiple corresponding sequential segments of the medium. A characteristic of each of the sequential symbol parts is evaluated. A speed is monitored with which the medium is moved upon the marking of each of the sequential symbol parts onto each of the corresponding sequential segments of the medium. An image, captured in relation to the evaluation, is adjusted based on the monitored speed. Adjusting the captured image may include setting a rate at which the evaluation of the characteristic of each of the sequential symbol parts is performed based on the monitored speed or alternatively, predicting a distortion in the evaluated characteristic of each of the sequential symbol parts corresponding to the monitored speed, and applying a change to the captured image corresponding to, and ameliorating the predicted distortion.
An apparatus and method for automatically calibrating a media sensor configured to detect advancing print media in a printing device. In some embodiments, the apparatus selects a first light intensity level and a second light intensity level greater than the first light intensity level. A light source unit, such as a light emitting diode or laser diode is activated to emit light at the second light intensity level. The light passes though print media, for example, a roll of self-adhesive labels, that is advanced along a print path of the printing device. The amount of light transmitted through the print media is measured as the print media advances. If the measured light increases, the light source unit is reactivated to emit light at the first light intensity level. In some embodiments, the apparatus identifies whether print media has changed or an out-of-stock condition exists.
A media hanger/guide comprising a media hub having a top surface and a channel extending through a portion of the top surface. The media hanger/guide further comprises two mounting brackets positioned in the channel, each mounting bracket having an elongated member and each elongated member having a plurality of teeth located thereon. Each mounting bracket also has a support member connected thereto. At least a portion of each support member is located outside of the channel of the media hub. The support members are adapted for lateral movement along the channel of the media hub relative to the top surface of the media hub. The media hanger/guide further comprises two gears positioned in the channel. Each gear is in operable connection with the teeth of one of the mounting bracket's elongated members. The gears are also in operable connection with each other.
A latching mechanism includes a housing defining a slot for receiving a device therein. The housing includes first and second slide blocks disposed on either side of the slot. Each slide block is movable between a retracted position, wherein a pin thereof is disposed within the housing, and an extended position, wherein the pin extends into the slot to engage the device therein. A U-shaped member is disposed within the housing and includes first and second legs interconnected by a base. The U-shaped member is movable relative to the housing between an unlocked position, wherein the legs retain the slide blocks in the retracted position, a locked position, wherein the slide blocks are permitted to move to the extended position, and an eject position, wherein the legs retain the slide blocks in the retracted position and wherein the base extends into the slot to eject the handheld device.
A method for automatically adjusting the setting(s) of a printer having a control circuit in communication with a sensory system and a database. The database is located in a storage medium and the data in the database includes one or more defined parameter settings corresponding to one or more media types. The sensory system is used to obtain a media identifier from media loaded into the printer. The control circuit determines the type of media from the media identifier. The media type is then compared to the database entries and used to retrieve any defined parameter setting(s) corresponding to the media type identified by the media identifier. Instructions to adjust the printer setting(s) according to the defined parameter setting(s) are determined at the control circuit. The control circuit then sends the instructions to the appropriate systems of the printer to adjusted the printer setting(s) according to the defined parameter setting(s).
A print station system (1) having a drive-stepper motor (2), platen rollers (3, 4) in operative communication with the drive-stepper motor (2), a pinch roller (10) in operative communication with the drive-stepper motor (2), a top-of-form sensor (11) located between the platen roller (3, 4) and the pinch roller (10), a rocker arm (12) in operative communication with the platen roller (3, 4) and the pinch roller (10), and a printhead assembly (5), a media guide (12a, 12b). A radio-frequency identification antenna (16) or a receptacle (15) for holding same may be located between the platen roller (3, 4) and the pinch roller (10).
The present invention is directed to an apparatus and method for determining and adjusting printhead pressure of a thermal printer. The apparatus includes a printhead support housing operable for placement in a print station of a printer. A motor housed within the printhead support housing and being operable for driving a plurality of synchronized rotating gears, the gears being mounted about posts wherein the posts are configured to cause the gears to compress or decompress a set of biasing mechanisms mounted below the gears and connected to the printhead. A sensor unit operable for monitoring the thickness of a print media and in communication with a control circuit operable for adjusting the printhead pressure being applied to the print media during a print operation, wherein the printhead pressure corresponds to a pre¬ defined level relative to the thickness of the print media.
B41J 25/312 - Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface with print pressure adjustment mechanisms, e.g. pressure-on-the-paper mechanisms
A ribbon drive assembly for optimizing the tension across a ribbon supply in a thermal transfer printer comprising a supply spindle and a take up spindle operable for cooperating with each other such that the ribbon supply is fed from the supply spindle through a print station and metered onto the take up spindle. Each spindle is provided with and connected to a motor, a plurality of gears, and a rotary encoder such that the spindles may be independently controlled by a control processor. The control processor is operable for monitoring, detecting, and controlling the operation of the motors and spindles. During operation and in order to maintain a constant ribbon tension, the torque on the motors are continuously adjusted in accordance with various data provided by the printer's processor.
09 - Scientific and electric apparatus and instruments
Goods & Services
(1) Bar code label printers; printer accessories, namely, thermal printheads; hand-held thermal and impact printers; printers; barcode scanners and readers; and electronic terminal for an electronic ticketing system which generates event admissions tickets and tickets for transportation.
A portable printer having improved ergonomic and operational characteristics. The printer includes an asymmetrically-damped media centering mechanism having first and second media support members moveable along a common longitudinal axis and configured to grasp roll media. The media support members are coupled to a reciprocal movement mechanism configured to translate a longitudinal movement of the first media support member into a corresponding opposite longitudinal movement of the second media support member. A pivoting arm is coupled to the reciprocal movement mechanism. The pivoting arm pivots to a first position when the first and second media support members are moved closer to each other, which causes a damping gear to engage the reciprocal movement mechanism, thereby damping the grasping motion of the media support members and providing an improved user experience. The printer facilitates one-handed operation, including one-handed loading and unloading of media, enabling its use in a variety of environments.
09 - Scientific and electric apparatus and instruments
Goods & Services
Computer software for use in connection with the configuration, management, monitoring and control of bar code scanners, printers and portable receipt printers
