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Dataproducts Corporation Patents
Assignee:
Dataproducts Corporation
Address:
Woodland Hills, CA
No. of patents:
136
Patents:


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Patent Number Title Of Patent Date Issued
D351410 Ribbon cartridge October 11, 1994
D346821 Stepped diameter recessed solid ink pellet May 10, 1994
D341156 Ink jet ink cartridge November 9, 1993
D335683 Smooth edge recessed solid ink pellet May 18, 1993
D333836 Printer March 9, 1993
D327291 Ink jet cartridge June 23, 1992
D321899 Reinker cartridge November 26, 1991
D310240 Toner cartridge August 28, 1990
D303396 Ribbon cartridge September 12, 1989
6179408 Apparatus for printing with ink jet chambers utilizing a plurality of orifices January 30, 2001
A dense array of ink jets is achieved by a fanning-in of chambers to a linear array of orifices. The ends of the chambers remote from the orifices have actuation locations which are coupled to elongated transducers having axes of elongation which are parallel to the axes of ejection
6033061 Ink supply for impulse ink jet system, said ink supply including a cap having a threaded perpher March 7, 2000
An ink supply system for an impulse ink jet apparatus includes a hand held peristaltic device for priming. Ink is supplied by a removable container by gravity feed through a valve mechanism.
5966148 Apparatus for printing with ink jet chambers utilizing a plurality of orifices October 12, 1999
A dense array of ink jets is achieved by a fanning-in of chambers to a linear array of orifices. The ends of the chambers remote from the orifices have actuation locations which are coupled to elongated transducers having axes of elongation which are parallel to the axes of ejection
5903716 Virtual printer May 11, 1999
A work station user selects a desired printer default configuration. Thereupon an address exclusively associated with the selected default configuration is appended to the print data sent from the work station to the printer. Default configuration setting circuitry provided, e.g., in a
5898823 Network printer auto-detection method and system April 27, 1999
In an electronic network having a computer, a spooler and a printer, the network address of the printer is automatically detected by a method and a system in which a non-print job, which includes a job header identifying the sending computer, is generated by the computer and transmitted
5887990 Virtual font cartridge March 30, 1999
Methods and apparatus for emulating font cartridges with virtual cartridges. Virtual cartridges may be loaded onto a data storage device, and desired virtual cartridges may be selected for use from those stored.
5821964 Cartridge for supplying liquid to a print head October 13, 1998
A cartridge of the type used with a printer is provided for supplying liquid to the printer. The cartridge includes a container that has first through sixth walls and a partition in the form of an inner wall that substantially divides the container into first and second compartments.
5801732 Piezo impulse ink jet pulse delay to reduce mechanical and fluidic cross-talk September 1, 1998
An ink jet apparatus comprising an array of impulse ink jets is disclosed. Each of the ink jets includes a chamber having an orifice and a transducer coupled to the chamber, a signal generator applying firing signals to each transducer of each of the ink jets to eject droplets of ink on
5798774 Gas assisted ink jet apparatus and method August 25, 1998
A gas assisted liquid jet apparatus, suitable for use in ink jet printers, includes a transducer housing having a plurality of ink passages and is designed to be used with solid or hot melt ink. The apparatus operates with a compressed air source to provide a laminar air flow through an
5797329 Hot melt ink printer and method printing August 25, 1998
A printer and a method for printing hot melt ink in which an ink jet is surrounded by an enclosure and including a heater for heating the air within the enclosure. The enclosure has an opening so that the heated air can be directed towards a medium for heating the medium prior to ejectin
5779779 UV-blocking hot melt inks July 14, 1998
UV-blocking hot melt ink jet inks for printing on flexible and other media. An UV-blocking hot melt ink jet ink for flexo-graphic plating comprises a wax, a plasticizer, an UV blocker, and a dye. Such an ink is flexible and durable, gives good printing quality, and is also removable from
5767873 Apparatus for printing with ink chambers utilizing a plurality of orifices June 16, 1998
A dense array of ink jets is achieved by a fanning-in of chambers to a linear array of orifices. The ends of the chambers remote from the orifices have actuation locations which are coupled to elongated transducers having axes of elongation which are parallel to the axes of ejection
5713677 Ink ribbon cartridge having transfer roller with staggered upper and lower teeth arrangement February 3, 1998
In an ink ribbon cartridge (or cartridge ribbon) in which a length of ink ribbon driven through the cartridge is re-inked by a rotatable foam cylinder or reinker saturated with ink, an improved transfer roller is provided for transferring ink from the reinker onto the surface of the ink
5638497 Virtual printer June 10, 1997
A work station user selects a desired printer default configuration. Thereupon an address exclusively associated with the selected default configuration is appended to the print data sent from the work station to the printer. Default configuration setting circuitry provided, e.g., in a
5611022 Color imaging March 11, 1997
A bi-level printer is controlled to selectively enhance each pel, based on an error diffusion process. However, each channel (e.g., RGB red, green and blue color channels; Lab luminance, red direction and blue direction channels; or other suitable channel division) is processed individua
5597856 Hot melt ink for transparency applications January 28, 1997
Phase change inks capable of passing light therethrough are suitable for color overhead transparencies, as well as plain paper printing. A composition for the ink carrier comprises an unsaturated bis-amide as a transparency enhancer, a low viscosity monoamide as a thinner material, a
5594532 Cartridge, cartridge cleaning apparatus and method for cleaning a corona wire January 14, 1997
An apparatus and method for cleaning a corona wire in a toner supply and a toner cartridge employing the apparatus and method for cleaning a corona wire. The apparatus and method allow a user to free the corona wire from debris or excess toner without interrupting the use of a printer fo
5592204 Hot melt impulse ink jet ink with dispersed solid pigment in a hot melt vehicle January 7, 1997
A novel hot melt ink jet ink is disclosed for use in an impulse ink jet apparatus. The disclosed ink comprises a dispersed solid pigment which is formulated in a wax, or high molecular weight fatty acid or alcohol vehicle to form a hot melt ink which is solid at room temperature. The
5587811 Halftone screen using spot function to rank pixels following one or more design rules December 24, 1996
A method of halftoning over a region of output pixels by defining large halftone cells corresponding to regions of contiguous pixels and partitioning the larger halftone cells into smaller halftone cells is disclosed. The number of levels of gray determined by the number of pixels wi
5581283 Ink jet apparatus having a plurality of chambers with multiple orifices December 3, 1996
Ink jet chambers of an array of ink jet devices extend laterally outwardly from a linear array of elongated transducers. This configuration creates two sets of linear arrayed orifices utilizing a single linear array of transducers so as to provide large field, high density printing for u
5559539 Ink jet recording apparatus having self aligning print head cleaning system and method of operat September 24, 1996
An ink jet apparatus including a recording head having a jetting surface, an actuator positioned adjacent to the jetting surface, and a cleaning blade member coupled to the actuator by a self-aligning system. The actuator is adapted to move the wiping blade between a cleaning position
5541624 Impulse ink jet apparatus employing ink in solid state form July 30, 1996
A demand ink jet employs removable cartridges of hot melt ink. When the temperature of the ink within the cartridge is raised, the ink melts and drains from the cartridge into the supply system.
5522016 Digitally controlled printing May 28, 1996
A method and apparatus for performing printing on a substrate on the basis of data representing a pattern composed of a plurality of parallel rows of discrete image elements. In a known manner, successive strips of image elements are formed on the substrate, each strip being constituted
5485183 Interlaced dot-on-dot printing January 16, 1996
A method and apparatus for printing an image on a printing medium with phase change ink, the printing medium providing a printing area composed of a plurality of parallel pixel rows extending in a first direction, with a uniform spacing, p, between pixel rows in a second direction pe
5371837 Virtual printer December 6, 1994
A work station user selects a desired printer default configuration. Thereupon an address exclusively associated with the selected default configuration is appended to the print data sent from the work station to the printer. Default configuration setting circuitry provided, e.g., in a
5350446 Hot melt impulse ink jet ink with dispersed solid pigment in a hot melt vehicle September 27, 1994
A novel hot melt ink jet ink is disclosed for use in an impulse ink jet apparatus. The disclosed ink comprises a dispersed solid pigment which is formulated in a wax, or high molecular weight fatty acid or alcohol vehicle to form a hot melt ink which is solid at room temperature. The
5347617 Printer having a multiple scan line printhead controller September 13, 1994
A printer accesses from a bit mapped raster matrix of an image to be printed, a group of bits corresponding in number to the number of printing elements of the printhead. This group of bits is used to drive the printing elements of the printhead so as to print the image. In the print
5343226 Ink jet ink supply apparatus August 30, 1994
An ink supply apparatus comprises a container for storing ink jet ink having an opening for releasing ink from the container and a valve member mounted in the opening in the container and spring means coupled to the valve member for biasing the valve member so as to prevent the flow of i
5313232 Method of jetting phase change ink May 17, 1994
A method of operating a system for jetting phase change ink by effecting a solid-to-liquid phase transition of the ink by elevating its temperature, ejecting a first volume of liquid ink towards a target, lowering the temperature of the ejected ink to cause it to solidify after contact w
5300950 Interlaced ink jet printer April 5, 1994
A row-interleaved printing method for use in phase change ink jet printers which minimizes appearance abnormalities when printing solid geometric shapes; minimizes the horizontal "banding-effect" caused by cross-talk between ink jets when all jets are activated; and minimize the "seaming
5258774 Compensation for aerodynamic influences in ink jet apparatuses having ink jet chambers utilizing November 2, 1993
Impulse ink jet apparatus has a plurality of side-by-side chambers extending along a line that is slanted with respect to a direction of scanning relative to a recording medium. Each of the chambers includes a plurality of orifices that are arranged along a line extending substantial
5256192 Solvent based fluorescent ink compositions for ink jet printing October 26, 1993
Fluorescent ink compositions and methods for using the ink co positions in drop-on-demand ink jet printers is provided. The fluorescent ink compositions are formulated with an aromatic alcohol, a glycol, a fatty acid, and at least one fluorescent pigment.
5239316 Head tend media and system for an ink jet printer August 24, 1993
A head tending media for cleaning the print head of an ink jet printer. The head tend media having a portion of absorbent material attached to a backing material and being dimensioned to be fed through the normal print media feed mechanism of the printer. The absorbent material being
5239312 Interlaced ink jet printing August 24, 1993
A pixel row interlacing method and system, and print head for practicing same, for use with dot-matrix ink jet printers which apply ink to a substrate as elevated temperatures (e.g., phase change ink jet printers), which assures environmentally symmetric ordered placement of molten ink
5235350 Pigmented semiconductive hot melt ink and ink jet apparatus employing same August 10, 1993
Ink jet apparatus including a print head having at least one chamber, an inlet opening to the chamber, and a droplet ejection orifice from the chamber, a transducer coupled to the chamber for ejecting droplets of ink in liquid form therefrom through the orifice, a manifold for supplying
5202659 Method and apparatus for selective multi-resonant operation of an ink jet controlling dot size April 13, 1993
The volume of ink ejected from an ink jet printing apparatus during one cycle of operation for printing a dot upon a recording medium is controlled within that cycle of operation by operating the ink jet apparatus via the application of a pulse train having a periodicity equivalent t
5197812 High accuracy vacuum belt and pinch roller media transport mechanism March 30, 1993
A media transport mechanism including a high accuracy vacuum belt used in conjunction with a pinch roller assembly. The media transport mechanism includes a vacuum belt supportably wrapped around two sprocket assemblies and a plenum and disposed in facing relation to a print head. The va
5182572 Demand ink jet utilizing a phase change ink and method of operating January 26, 1993
A demand or impulse ink jet ejects droplets of hot melt ink. The hot melt ink is heated from a solid state to a liquid state in the jet prior to the ejection of droplets on demand. The ink is then cooled on striking the target. The ink may contain a wax.
5181049 Phase change ink replenishment system January 19, 1993
In a color printer including a print head for effecting printing with a phase change ink and provided with a reservoir for holding a supply of the ink, an ink replenishment assembly composed of an ink storage device for storing a plurality of pellets of the ink in solid phase, the storag
5142296 Ink jet nozzle crosstalk suppression August 25, 1992
In an ink jet printer having a plurality of ink jet channels which are individually controllable to produce ink dots on a printing medium, crosstalk is reduced by activating each odd numbered channel in alternation with each even numbered channel, while offsetting the orifices of one
5130720 System for driving ink jet transducers and method of operation July 14, 1992
A drive system for driving the transducers of an ink jet print head. A controller determines transducer activation periods during which one or more selected transducers are to be activated. During each transducer activation period a voltage source is activated. A drive circuit receives
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