Did You Know...
...In 1790, the cost to obtain a patent was between $4 and $5.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7048359 | Ink-jet printhead and method for producing the same 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 sai... | 05/23/2006 |
| 6997540 | Substrate for fluid ejection devices 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 fr... | 02/14/2006 |
| 6880246 | Method of forming substrate with fluid passage supports 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,... | 04/19/2005 |
| 6843552 | Electrical circuit for printhead assembly 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 t... | 01/18/2005 |
| 6705705 | Substrate for fluid ejection devices 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 fr... | 03/16/2004 |
| 6659596 | Ink-jet printhead and method for producing the same 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 disp... | 12/09/2003 |
| 6557976 | Electrical circuit for wide-array inkjet printhead assembly 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... | 05/06/2003 |
| 6543880 | Inkjet printhead assembly having planarized mounting layer for printhead dies 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... | 04/08/2003 |
| 6523940 | Carrier for fluid ejection device 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 ... | 02/25/2003 |
| 6520624 | Substrate with fluid passage supports 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, a... | 02/18/2003 |
| 6464333 | Inkjet printhead assembly with hybrid carrier for printhead dies 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... | 10/15/2002 |
| 6431683 | Hybrid carrier for wide-array inkjet printhead assembly 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 ... | 08/13/2002 |
| 6409307 | Coplanar mounting of printhead dies for wide-array inkjet printhead assembly 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 surfac... | 06/25/2002 |
| 6341845 | Electrical connection for wide-array inkjet printhead assembly with hybrid carrier for printhead dies 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 ... | 01/29/2002 |
| 6332677 | Stable substrate structure for a wide swath nozzle array in a high resolution inkjet printer 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 wit... | 12/25/2001 |
| 6328428 | Ink-jet printhead and method of producing same 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 bar... | 12/11/2001 |
| 6273560 | Print cartridge coupling and reservoir assembly for use in an inkjet printing system with an off-axis ink supply 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, leak... | 08/14/2001 |
| 6188417 | Fluidic adapter for use with an inkjet print cartridge having an internal pressure regulator 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 i... | 02/13/2001 |
| 6003986 | Bubble tolerant manifold design for inkjet cartridge 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... | 12/21/1999 |
| 5984464 | Stable substrate structure for a wide swath nozzle array in a high resolution inkjet printer 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 wit... | 11/16/1999 |
| 5946012 | Reliable high performance drop generator for an inkjet printhead 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 ... | 08/31/1999 |
| 5909231 | Gas flush to eliminate residual bubbles 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... | 06/01/1999 |
| 5880748 | Ink delivery system for an inkjet pen having an automatic pressure regulation system 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 ... | 03/09/1999 |
| 5874974 | Reliable high performance drop generator for an inkjet printhead 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 ... | 02/23/1999 |
| 5748209 | Thermal ink jet tab circuit having a plurality of trace groups wherein adjacent traces in each group are staggered 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... | 05/05/1998 |
| 5648805 | Inkjet printhead architecture for high speed and high resolution printing 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 loc... | 07/15/1997 |
| 5638101 | High density nozzle array for inkjet printhead 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... | 06/10/1997 |
| 5635966 | Edge feed ink delivery thermal inkjet printhead structure and method of fabrication 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 containin... | 06/03/1997 |
| 5625396 | Ink delivery method for an inkjet print cartridge 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 su... | 04/29/1997 |
| 5619236 | Self-cooling printhead structure for inkjet printer with high density high frequency firing chambers 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 peripher... | 04/08/1997 |
| 5604519 | Inkjet printhead architecture for high frequency operation 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 sa... | 02/18/1997 |
| 5594481 | Ink channel structure for inkjet printhead 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 peri... | 01/14/1997 |
| 5568171 | Compact inkjet substrate with a minimal number of circuit interconnects located at the end thereof 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 numb... | 10/22/1996 |
| 5563642 | Inkjet printhead architecture for high speed ink firing chamber refill 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 peripher... | 10/08/1996 |
| 5434607 | Attachment of nozzle plate to flexible circuit for facilitating assembly of printhead 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 c... | 07/18/1995 |
| 5187500 | Control of energy to thermal inkjet heating elements 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 ... | 02/16/1993 |
