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Hewlett-Packard Company Patents |
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Assignee: Hewlett-Packard Company
Address: Palo Alto, CA
No. of patents: 9144
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| RE39700 |
Ink additives for improved ink-jet performance |
June 26, 2007 |
| Oxo anions (both singly and multiply charged), such as phosphates, polyphosphates, and phosphate esters, serve as additives, and in the case of cationic dyes, may serve as replacement counter-ions, for use in thermal ink-jet inks to reduce kogation significantly. The addition of such |
| RE37874 |
Off-axis ink with supply with pressurized ink tube for preventing air ingestion |
October 15, 2002 |
| In the preferred embodiment, an inkjet printer includes a replaceable print cartridge which is inserted into a scanning carriage. The print cartridge contains a regulator valve. An ink tube extends from the scanning carriage to a separate, disposable ink supply cartridge located within t |
| RE37671 |
Printhead-carriage alignment and electrical interconnect lock-in mechanism |
April 30, 2002 |
| A printhead cartridge and carriage assembly (10) is provided comprising: a carriage (12); a snap-spring (62) for securing a printing cartridge (14) in postion on the carriage; and an interconnect strip (16) for supplying electrical signals to the cartridge, including a force loading spri |
| RE37517 |
Portion of an optical scanner |
January 22, 2002 |
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| RE36948 |
Print enhancement system for enhancing dot printer images |
November 7, 2000 |
| A method and apparatus for enhancing the quality of images printed by dot printers or dot displays are disclosed. Image irregularities caused by quantization are smoothed by using a set of rules to transform an initial pattern into an enhanced pattern for printing. The initial pattern ma |
| RE36350 |
Fully integrated miniaturized planar liquid sample handling and analysis device |
October 26, 1999 |
| A miniaturized total analysis system (".mu.-TAS") comprising a miniaturized planar column device is described for use in liquid phase analysis. The .mu.-TAS comprises microstructures fabricated by laser ablation in a variety of novel support substrates. The .mu.-TAS includes associated |
| RE35922 |
Method and apparatus for preventing print overruns |
October 13, 1998 |
| A page printer is described which divides each page of text, graphics, etc. into lateral page strips, each having an allocated page strip rasterization time (PSRT) based upon the printer's page print time. A method is described for assuring that a print mechanism in the printer has a |
| RE31515 |
Fiber optic connector |
February 7, 1984 |
| The retainer sleeve of a three piece ferrule suitable for very small diameter optical fibers has an outside diameter threaded portion at the closed end so that, after the ferrule and optical fiber have been assembled, an outer sleeve, having a correspondingly threaded inside diameter |
| RE30743 |
Thermal printer-plotter system for multi-directional printing and plotting |
September 15, 1981 |
| A printer-plotter system is provided having a single horizontally movable, print-plot head comprising geometrically arranged thermal resistor elements which are processor-controlled for plotting continuous multi-directional line segments and for printing, while plotting, upper and lo |
| RE30171 |
Multiconfiguration ionization source |
December 18, 1979 |
| This is an ion-producing source having a distinct chemical ionization configuration and a distinct electron impact configuration. In this source, a hollow chamber including an ion source and a source of sample molecules receives a hollow, slidable cylindrical member having a chemical |
| RE29246 |
Data transfer control apparatus and method |
May 31, 1977 |
| An improved data transfer system enables a common data source to operate asynchronously with a plurality of different data receivers at a data transfer rate that is limited only by the operating rates of the data receivers and the data source. The operating conditions of the data rec |
| D480086 |
Computer workstation |
September 30, 2003 |
|
| D480082 |
Computer workstation |
September 30, 2003 |
|
| D479717 |
Computer workstation |
September 16, 2003 |
|
| D475400 |
Sheet handling tray |
June 3, 2003 |
|
| D475399 |
Sheet handling tray |
June 3, 2003 |
|
| D475398 |
Duplexer |
June 3, 2003 |
|
| D474181 |
Portable personal computer system |
May 6, 2003 |
|
| D474180 |
Computer workstation |
May 6, 2003 |
|
| D473894 |
Multi-function inkjet printer |
April 29, 2003 |
|
| D472880 |
Electrical contact |
April 8, 2003 |
|
| D472571 |
Digital projector |
April 1, 2003 |
|
| D472266 |
Document feeder for an optical scanner |
March 25, 2003 |
|
| D471871 |
Interface cable connector |
March 18, 2003 |
|
| D471205 |
Portion of a computer display with a computer icon graphic |
March 4, 2003 |
|
| D470859 |
Portion of a computer display with a computer icon graphic |
February 25, 2003 |
|
| D469775 |
Pedestal computer docking station |
February 4, 2003 |
|
| D469773 |
Pedestal computer docking station |
February 4, 2003 |
|
| D469763 |
Computer workstation |
February 4, 2003 |
|
| D469096 |
Scanner |
January 21, 2003 |
|
| D468750 |
Portion of a computer display with a computer icon graphic |
January 14, 2003 |
|
| D468736 |
Personal digital assistant |
January 14, 2003 |
|
| D467927 |
Front portion of an optical scanner cover |
December 31, 2002 |
|
| D466928 |
Ink jet print cartridge |
December 10, 2002 |
|
| D466924 |
Inkjet printer |
December 10, 2002 |
|
| D466923 |
Inkjet printer with fixed sheet feeder |
December 10, 2002 |
|
| D466552 |
Inkjet printer |
December 3, 2002 |
|
| D465801 |
Document printer |
November 19, 2002 |
|
| D465515 |
Inkjet printer with sheet feeder |
November 12, 2002 |
|
| D465514 |
Printer |
November 12, 2002 |
|
| D464938 |
High performance cooling device |
October 29, 2002 |
|
| D464373 |
Printer access door |
October 15, 2002 |
|
| D464371 |
Ink jet print cartridge |
October 15, 2002 |
|
| D463436 |
Hand held optical scanner front face portion |
September 24, 2002 |
|
| D463272 |
Tiered cartons |
September 24, 2002 |
|
| D462971 |
Combination printer, facsimile, copier and scanner |
September 17, 2002 |
|
| D462381 |
Auxiliary sheet feeder unit |
September 3, 2002 |
|
| D462380 |
Printer |
September 3, 2002 |
|
| D462087 |
Inkjet printer |
August 27, 2002 |
|
| D462086 |
Document printer |
August 27, 2002 |
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