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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Keefe; Brian J.
Address:
La Jolla, CA
No. of patents:
44
Patents:












Patent Number Title Of Patent Date Issued
7048359 Ink-jet printhead and method for producing the same May 23, 2006
An ink-jet printhead is provided having a thin film substrate comprising a plurality of thin film layers; a plurality of ink firing heater resistors defined in said plurality of thin film layers; a polymer fluid barrier layer; and a carbon rich layer disposed on said plurality of thin fi
6997540 Substrate for fluid ejection devices February 14, 2006
A fluid ejection assembly includes a substrate and a plurality of fluid ejection devices each mounted on the substrate. The substrate includes a frame formed of a first material and a body formed of a second material such that the body substantially surrounds the frame and forms a first
6880246 Method of forming substrate with fluid passage supports April 19, 2005
A method of forming a fluid ejection assembly includes providing a substrate including a plurality of layers and having a plurality of fluid passages extending through the plurality of layers, extending a support between opposite sides of each of the fluid passages, and mounting a pl
6843552 Electrical circuit for printhead assembly January 18, 2005
A printhead assembly includes a carrier having a first side and a second side contiguous with the first side, a plurality of printhead dies each mounted on the first side of the carrier, an electrical circuit including a first portion disposed on the first side of the carrier and a secon
6705705 Substrate for fluid ejection devices March 16, 2004
A fluid ejection assembly includes a substrate and a plurality of fluid ejection devices each mounted on the substrate. The substrate includes a frame formed of a first material and a body formed of a second material such that the body substantially surrounds the frame and forms a first
6659596 Ink-jet printhead and method for producing the same December 9, 2003
An ink-jet printhead is provided having a thin film substrate comprising a plurality of thin film layers; a plurality of ink firing heater resistors defined in said plurality of thin film layers; a polymer fluid barrier layer; and a carbon rich layer disposed on said plurality of thin fi
6557976 Electrical circuit for wide-array inkjet printhead assembly May 6, 2003
A wide-array inkjet printhead assembly includes a carrier having a first side and a second side contiguous with the first side, and a plurality of printhead dies each mounted on the first side of the carrier. An electrical circuit is disposed on the first side and the second side of
6543880 Inkjet printhead assembly having planarized mounting layer for printhead dies April 8, 2003
A method of forming an inkjet printhead assembly includes providing a substrate, disposing a planarization layer on a face of the substrate such that a first surface of the planarization layer contacts the face of the substrate, mechanically planarizing a second surface of the planarizat
6523940 Carrier for fluid ejection device February 25, 2003
A fluid ejection assembly includes a carrier including a substrate and an electrical circuit with the substrate having a first side and a second side opposite the first side and the electrical circuit being disposed on the second side of the substrate, a fluid ejection device mounted on
6520624 Substrate with fluid passage supports February 18, 2003
A fluid ejection assembly includes a substrate including a plurality of layers and having a plurality of fluid passages extending through the plurality of layers, with each of the fluid passages having a support extending between opposite sides thereof, and a plurality of fluid eject
6464333 Inkjet printhead assembly with hybrid carrier for printhead dies October 15, 2002
An inkjet printhead assembly includes a carrier and a plurality of printhead dies. The carrier includes a substrate and an electrical circuit. The substrate has a first side and a second side such that the electrical circuit is disposed on the second side of the substrate. The printh
6431683 Hybrid carrier for wide-array inkjet printhead assembly August 13, 2002
A wide-array inkjet printhead assembly includes a carrier and a plurality of printhead dies each mounted on the carrier. The carrier includes a substructure and a substrate mounted on the substructure. The substrate includes a plurality of layers and has a plurality of conductive paths
6409307 Coplanar mounting of printhead dies for wide-array inkjet printhead assembly June 25, 2002
An inkjet printhead assembly includes a substrate having a non-planar surface and a plurality of adhesive quantities each disposed on the non-planar surface of the substrate. As such, a plurality of printhead dies are each adhered to the non-planar surface of the substrate by one of
6341845 Electrical connection for wide-array inkjet printhead assembly with hybrid carrier for printhead January 29, 2002
A wide-array inkjet printhead assembly includes a carrier and a printhead die. The carrier includes a substrate and an electrical circuit. The substrate has a first side and a second side such that the electrical circuit is disposed on the second side of the substrate. The printhead die
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
6328428 Ink-jet printhead and method of producing same December 11, 2001
A technique for improving lamination quality and for controlling NCA in an ink-jet printhead. With respect to lamination quality, printhead regions are identified where it is desirable to improve planarity or to reduce the likelihood of corner lift or barrier/orifice plate delamination.
6273560 Print cartridge coupling and reservoir assembly for use in an inkjet printing system with an off August 14, 2001
Disclosed is a fluidic coupling that releasably and fluidically connects to the inlet port of an inkjet print cartridge. The fluidic coupling acts as a seal for the print cartridge and a means of lubricating and protecting the inlet port from drying, leaking ink, and air ingestion while
6209991 Transition metal carbide films for applications in ink jet printheads April 3, 2001
A thermal ink jet printhead that includes a thin film substrate including a plurality of thin film layers, a plurality of ink firing heater resistors defined in the plurality of thin film layers, a patterned tantalum carbide layer disposed on the plurality of thin film layers, an ink bar
6188417 Fluidic adapter for use with an inkjet print cartridge having an internal pressure regulator February 13, 2001
Described is an ink delivery system for an inkjet printing system including a housing; a printhead fixed to the housing for ejecting droplets of ink on media; a regulator located within the housing; a source of ink for replenishing the printhead; and an ink passageway for connecting the
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
6155674 Structure to effect adhesion between substrate and ink barrier in ink jet printhead December 5, 2000
A thermal ink jet printhead that includes an adhesion interface between a silicon carbide layer of a thin film substrate and a polymer ink barrier layer in the vicinity of ink chambers formed in the polymer ink barrier layer, and an adhesion interface between a silicon carbide layer disp
6003986 Bubble tolerant manifold design for inkjet cartridge December 21, 1999
In a inkjet print cartridge ink flows from the reservoir around the edge of the silicon substrate before being ejected out of the nozzles. During operation, warm thermal boundary layers of ink form adjacent the substrate and dissolved gases in the thermal boundary layer of the ink form t
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
5909231 Gas flush to eliminate residual bubbles June 1, 1999
In a inkjet print cartridge ink flows from the reservoir around the edge of the silicon substrate before being ejected out of the nozzles. During operation, warm thermal boundary layers of ink form adjacent the substrate and dissolved gases in the thermal boundary layer of the ink form t
5880748 Ink delivery system for an inkjet pen having an automatic pressure regulation system March 9, 1999
An ink delivery system for an ink jet printing system having a printhead for ejecting droplets of ink, the printhead receiving ink at a controlled pressure, the controlled pressure having a specified pressure range that assures stable printhead operation which includes a replaceable ink
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
5748209 Thermal ink jet tab circuit having a plurality of trace groups wherein adjacent traces in each g May 5, 1998
A TAB circuit particularly suited for an ink jet pen and method of manufacture. A TAB circuit is presented which incorporates a central isolation area within the TAB circuit and an ESD protective ring which surrounds the TAB circuit. To facilitate plating, all of the active TAB trace
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
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
5434607 Attachment of nozzle plate to flexible circuit for facilitating assembly of printhead July 18, 1995
In a printhead assembly, a nozzle plate is bonded directly to special traces formed on a flexible tape automated bonding (TAB) circuit, using a commercially available automatic lead bonder, to retain the nozzle plate in place on the TAB circuit. The TAB circuit is handled in a reel-to-re
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
5187500 Control of energy to thermal inkjet heating elements February 16, 1993
A thermal ink jet printhead including a substrate, a resistor layer on the substrate having ink drop firing resistors and energy controlling resistors defined therein, a metallization layer adjacent the resistor layer and having metallic interconnections formed therein for providing










 
 
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