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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Steinfield; Steven W.
Address:
San Diego, CA
No. of patents:
45
Patents:












Patent Number Title Of Patent Date Issued
8002382 Print head wiping August 23, 2011
Various embodiments and methods relating to wiping of a print head are disclosed.
7437104 Developer cleaning October 14, 2008
A developer system component includes at least one surface configured to be driven so as to create fluid flow providing a shear force adjacent a cleaner.
7275534 Medicament ejector with ejection port servicing October 2, 2007
A medicament ejector is provided which includes an ejection mechanism and a service mechanism. The ejection mechanism includes at least one ejection port configured to eject a medicament-containing fluid. The service mechanism is selectively deployable to service the at least one eje
7232226 Color-generating device and display system June 19, 2007
A light-filtering element for a display device is provided. The element includes at least one filter having a chamber with a filtering fluid, the filtering fluid selectively disposed in an optical path, and a liquid motion actuator selectively configured to move the filtering fluid s
7229152 Fluid ejection device with insulating feature June 12, 2007
In one embodiment, a fluid ejection device is configured to receive a signal and ejecting fluid in response thereto, including an ink ejecting nozzle layer having a substrate with first and second surfaces joined along an edge, an insulating feature located on the first surface adjac
7038867 Filter for display system May 2, 2006
A filter for a display system is provided which includes a fluid chamber having a selectively moveable filtering fluid, plural electrodes being coupled with the fluid chamber to accommodate establishment of an electric field whereby the filtering fluid may be selectively positioned i
6962715 Method and dosage form for dispensing a bioactive substance November 8, 2005
A method of manufacturing a bioactive fluid dose on an ingestible sheet, comprising the steps of advancing the ingestible sheet to a dispense position, and activating a fluid ejector to dispense essentially a drop of a bioactive fluid onto the ingestible sheet.
6932502 Mixing apparatus August 23, 2005
A mixing apparatus that includes a drop on demand fluid dispenser for adding an additive fluid to a receiver liquid to produce a composite liquid that includes the receiver liquid and the additive fluid.
6921175 Color-generating device and display system July 26, 2005
A light-filtering element for a display device is provided. The element includes at least one filter having a chamber with a filtering fluid, the filtering fluid selectively disposed in an optical path, and a liquid motion actuator selectively configured to move the filtering fluid s
6920000 Filter for a display system July 19, 2005
A filter for a display system is provided which includes a fluid chamber having a selectively moveable filtering fluid, plural electrodes being coupled with the fluid chamber to accommodate establishment of an electric field whereby the filtering fluid may be selectively positioned in an
6905217 Projector with narrow-spectrum light source to complement broad-spectrum light source June 14, 2005
A projector that has a narrow-spectrum light source to complement a broad-spectrum light source is disclosed. The broad-spectrum light source has a broad spectrum. The narrow-spectrum light source has a narrow spectrum complementing the broad spectrum of the broad-spectrum light sour
6834930 Imaging device including an optical sensor December 28, 2004
An imaging device includes an optical sensor carried by a print carriage. An optical guide has an input end in optical alignment with a maintenance item and has an output end in optical alignment with a location to which the optical sensor may be moved by the print carriage.
6799882 Mixing apparatus for injecting fluid into a gas stream October 5, 2004
A mixing apparatus having a channel for guiding an input gas stream, a drop on demand fluid drop emitting apparatus for emitting drops of a fluid into the input gas stream to produce a gas mixture that contains the fluids drops, and a pressure control system for controlling a pressure of
6733139 Projector with narrow-spectrum light source to complement broad-spectrum light source May 11, 2004
A projector that has a narrow-spectrum light source to complement a broad-spectrum light source is disclosed. The broad-spectrum light source has a broad spectrum. The narrow-spectrum light source has a narrow spectrum complementing the broad spectrum of the broad-spectrum light sour
6702894 Fluid ejection cartridge and system for dispensing a bioactive substance March 9, 2004
A fluid ejection cartridge for dispensing a bioactive fluid including a first reservoir containing the bioactive fluid and a first fluid ejector fluidically coupled to the first reservoir. The first fluid ejector ejects at least a drop of the bioactive fluid onto the ingestible sheet.
6692100 Cleaning apparatus and method of assembly therefor for cleaning an inkjet print head February 17, 2004
Cleaning apparatus and method of assembly therefor for cleaning an inkjet print head. The cleaning apparatus comprises a web supply for supplying a cleaning web therefrom and a web receiver for receiving the web. A web drive drives the web from the web supply to the web receiver. The web
6688718 Heat transfer device for an inkjet printer February 10, 2004
This present invention is embodied in a printing system with thermally efficient heat transfer capabilities for reducing dimpling of a nozzle member during fabrication of the printhead portion of an inkjet printer. The printing system of the present invention includes a printhead assembl
6575550 Determining performance of a fluid ejection device June 10, 2003
Performance of a fluid ejection device is ascertained by using an array of fluid responsive transducers which provide signals useful for determining the size and/or landing position of ejected fluid droplets to obtain useful data for controlling fluid ejection devices such as inkjet
6508552 Printer having precision ink drying capability and method of assembling the printer January 21, 2003
A printer having precision ink drying capability and method of assembling the printer. The printer comprises a print head that is adapted to eject a plurality of ink drops through outlet orifices defined by the print head. The ink drops form a plurality of ink marks at a plurality of loc
6467878 System and method for locally controlling the thickness of a flexible nozzle member October 22, 2002
The present invention is embodied in a system and method for locally controlling the thickness of a flexible nozzle member of a printhead portion of an inkjet printer. The printing system of the present invention includes a printhead assembly and an ink supply for printing ink on print
6457821 Filter carrier for protecting a filter from being blocked by air bubbles in an inkjet printhead October 1, 2002
The present invention overcomes the problem of filter blockage created by bubble accumulation underneath the filter of previous printheads with a filter carrier and filter that reduces air bubble blockage of the filter. Namely, air bubble blockage of the filter is avoided by trapping mor
6334661 System and method for inducing tensioning of a flexible nozzle member of an inkjet printer with January 1, 2002
This present invention is embodied in a printing system and method for inducing shrinkage-tensioning of a flexible nozzle member of a printhead portion of an inkjet printer with an adhesive and novel arrangement. The printing system of the present invention includes a nozzle member secur
6332677 Stable substrate structure for a wide swath nozzle array in a high resolution inkjet printer December 25, 2001
An inkjet printhead includes a compact substrate of increased stability and structural integrity to provide a high resolution 600 dot-per-inch nozzle array having a one-half inch swath. A plurality of ink vaporization chambers are respectively aligned with the nozzles in two longitudinal
6314660 Cascaded tensioning tangential drive for THA handling November 13, 2001
A system and method for fabricating flexible circuits. The inventive system includes an oven and three or more independent tensioners for moving a strip of flex tape therethrough. In total, N tensioners are provided per side. The tensioners provide a cumulative tension force T on the tap
6244696 Inkjet print cartridge design for decreasing ink shorts by using an elevated substrate support s June 12, 2001
Disclosed is a flexible circuit that has a nozzle member formed therein with the nozzle member including a plurality of ink orifices and the flexible circuit having electrical leads. A substrate containing a plurality of heating elements and associated ink ejection chambers and havin
6186622 Low expansion snout insert for inkjet print cartridge February 13, 2001
Described herein is a snout insert, referred to as an exapander, which is pressed fit into the snout of a plastic inkjet print cartridge. The expander has a low coefficient of thermal expansion (CTE) and a high tensile modulus relative to the print cartridge body. The expander reduces
6179414 Ink delivery system for an inkjet printhead January 30, 2001
This invention provides an improved ink flow path between an ink reservoir and vaporization chambers in an inkjet printhead. In the preferred embodiment, a barrier layer containing ink channels and vaporization chambers is located between a rectangular substrate and a nozzle member c
5984464 Stable substrate structure for a wide swath nozzle array in a high resolution inkjet printer November 16, 1999
An inkjet printhead includes a compact substrate of increased stability and structural integrity to provide a high resolution 600 dot-per-inch nozzle array having a one-half inch swath. A plurality of ink vaporization chambers are respectively aligned with the nozzles in two longitudinal
5953029 Ink delivery system for an inkjet printhead September 14, 1999
This invention provides an improved ink flow path between an ink reservoir and vaporization chambers in an inkjet printhead. In the preferred embodiment, a barrier layer containing ink channels and vaporization chambers is located between a rectangular substrate and a nozzle member c
5946012 Reliable high performance drop generator for an inkjet printhead August 31, 1999
An inkjet drop ejection system comprises a combination of printhead components and ink, mutually tuned to maximize operating characteristics of the printhead and print quality and dry time of the ink. Use of a short shelf (distance from ink source to ink firing element), on the order of
5874974 Reliable high performance drop generator for an inkjet printhead February 23, 1999
An inkjet drop ejection system comprises a combination of printhead components and ink, mutually tuned to maximize operating characteristics of the printhead and print quality and dry time of the ink. Use of a short shelf (distance from ink source to ink firing element), on the order of
5648806 Stable substrate structure for a wide swath nozzle array in a high resolution inkjet printer July 15, 1997
An inkjet printhead includes a compact substrate of increased stability and structural integrity to provide a high resolution 600 dot-per-inch nozzle array having a one-half inch swath. A plurality of ink vaporization chambers are respectively aligned with the nozzles in two longitudinal
5648805 Inkjet printhead architecture for high speed and high resolution printing July 15, 1997
An improved ink flow path between an ink reservoir and ink ejection chambers in an inkjet printhead is disclosed along with a preferred printhead architecture. In the preferred embodiment, a barrier layer containing ink channels and firing chambers is located between a rectangular su
5648804 Compact inkjet substrate with centrally located circuitry and edge feed ink channels July 15, 1997
An inkjet printhead includes a compact substrate having a pair of elongated edge portions for ink channel architecture, a central interior for substrate circuitry, and a pair of truncated end portions for mounting and for electrical interconnects. The ink channel architecture includes a
5638101 High density nozzle array for inkjet printhead June 10, 1997
Described is an inkjet print cartridge including an ink reservoir; a substrate having a plurality of individual ink firing chambers with an ink firing element in each chamber; said ink firing chambers arranged in a first chamber array and a second chamber array and said firing chambers
5635966 Edge feed ink delivery thermal inkjet printhead structure and method of fabrication June 3, 1997
This invention provides an apparatus and method of fabrication thereof for an inkjet printhead with an improved ink flow path between an ink reservoir and vaporization chambers in an inkjet printhead. In the preferred embodiment, a barrier layer containing ink channels and vaporizati
5625396 Ink delivery method for an inkjet print cartridge April 29, 1997
This invention provides an improved ink flow path between an ink reservoir and vaporization chambers in an inkjet printhead. In the preferred embodiment, a barrier layer containing ink channels and vaporization chambers is located between a rectangular substrate and a nozzle member c
5619236 Self-cooling printhead structure for inkjet printer with high density high frequency firing cham April 8, 1997
Disclosed is an inkjet print cartridge having an ink reservoir; a substrate having a plurality of individual ink firing chambers with an ink firing element in each chamber along a top surface of the substrate and having a first outer edge along a periphery of substrate; the first outer e
5604519 Inkjet printhead architecture for high frequency operation February 18, 1997
Described is an ink delivery system for an array of nozzle orifices in a print cartridge comprising an ink reservoir; a substrate having a plurality of individual ink firing chambers with an ink firing element in each chamber; an ink channel connecting said reservoir with said ink fi
5594481 Ink channel structure for inkjet printhead January 14, 1997
Disclosed is an inkjet print cartridge including an ink reservoir; a substrate having a plurality of individual ink firing chambers with an ink firing element in each chamber along a top surface of said substrate and having a first outer edge along a periphery of substrate; the first out
5568171 Compact inkjet substrate with a minimal number of circuit interconnects located at the end there October 22, 1996
An inkjet printhead includes a compact substrate having transmission circuitry such as actuation signal lines and address circuitry and ground lines in connection with resistors in a plurality of vaporization chambers on the substrate, with a minimal number of interconnect junctions loca
5563642 Inkjet printhead architecture for high speed ink firing chamber refill October 8, 1996
Disclosed is an inkjet print cartridge having an ink reservoir; a substrate having a plurality of individual ink firing chambers with an ink firing element in each chamber along a top surface of the substrate and having a first outer edge along a periphery of substrate; the first outer e
5450113 Inkjet printhead with improved seal arrangement September 12, 1995
This invention provides an improved ink seal between a print cartridge body and an inkjet printhead. In a preferred embodiment, a nozzle member containing an array of orifices has a substrate, having heater elements formed thereon, affixed to a back surface of the nozzle member. Each
5420627 Inkjet printhead May 30, 1995
In a print cartridge according to the preferred embodiment of the invention, a polymer tape having orifices formed therein and containing conductive traces has a substrate containing heater elements affixed to a back surface of the tape. Each of the heater elements in the substrate is
5278584 Ink delivery system for an inkjet printhead January 11, 1994
This invention provides an improved ink flow path between an ink reservoir and vaporization chambers in an inkjet printhead. In the preferred embodiment, a barrier layer containing ink channels and vaporization chambers is located between a rectangular substrate and a nozzle member c










 
 
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