Shirley M Lee

US Patent:

6378976, Apr 30, 2002

Filed:

Aug 23, 1999

Appl. No.:

09/379077

Inventors:

Gary W. Byers - Vista CA
Shirley Lee - Poway CA

Assignee:

Hewlett-Packard Company - Palo Alto CA

International Classification:

B41J 217

US Classification:

347 19, 347 96, 347 98, 250271, 2504581

Abstract:

A method and apparatus for a test pattern used in the alignment of an ink-jet pen which deposits fixer fluid, or other clear ink precursor fluid, or even colored ink fluid, on print media incorporates a colorless chemical marker in the fixer that is either infrared- or ultraviolet-sensitive and can either be observed using IR-sensitive detectors or visually, respectively, upon application of IR (or near-IR) radiation or UV radiation, respectively. Thus, data may be obtained with respect to deviations in a carriage-scan x-axis and a paper scan y-axis. Thus, the teachings of the present invention permit a determination of the extent of misdirected or missing nozzles.

US Patent:

6533851, Mar 18, 2003

Filed:

Feb 12, 2001

Appl. No.:

09/781776

Inventors:

Shirley Lee - Poway CA
Joe R. Pietrzyk - late of San Diego CA

Assignee:

Hewlett-Packard Company - Palo Alto CA

International Classification:

C09D 1102

US Classification:

106 3127, 106 3143, 106 3158, 106 316, 106 3175, 106 3186

Abstract:

Ink-jet printer inks wherein kogation reduction is accomplished by the addition of phosphonate additives to the inks. In a preferred embodiment, the following are utilized: sodium salt of amino tri(methylene-phosphonic acid), 1-Hydroxyethylidene-1,1,-diphosphonic acid, diethylene triaminepenta(methylenephosonic acid); and potassium salt form of hexamethylenediamine tetra(methylene phosphonic acid). Although in the examples disclosed herein, the salt form of the phosphonic acids were used, the acid form of the phosphonic acid can also be used provided the pH of the final inks are adjusted to desirable levels. Use of the above listed additives essentially eliminate kogation for the life of the pens, such as those used in Hewlett-Packard Companys thermal inkjet printers.

US Patent:

6585817, Jul 1, 2003

Filed:

May 1, 2001

Appl. No.:

09/847069

Inventors:

Shirley Lee - Poway CA
John Dangelewicz - San Diego CA

Assignee:

Hewlett-Packard Development Company, L.P. - Houston TX

International Classification:

C09D 1102

US Classification:

106 3158, 106 3143, 106 3175, 106 3186

Abstract:

Ink-jet ink compositions are described comprising at least one organo-phosphonic acid. The ink-jet ink compositions reduce adhesive swell, scale formation and corrosion, and as such lead to improved interactions with the structural materials of ink-jet printer pens.

US Patent:

6592657, Jul 15, 2003

Filed:

Jul 27, 2001

Appl. No.:

09/916482

Inventors:

Shirley Lee - Poway CA
Steven L. Webb - Murrieta CA
Grant Allen Webster - Valley Center CA
Christopher S. Tanner - San Diego CA
Stephen W. Bauer - San Diego CA
Keshava A. Prasad - San Marcos CA

Assignee:

Hewlett-Packard Development Company, L.P. - Houston TX

International Classification:

C09D 1102

US Classification:

106 3158, 106 3143, 106 3175, 106 3186

Abstract:

Ink-jet ink compositions are described comprising at least one organo-phosphonic acid or its sodium or potassium salt. The ink-jet ink compositions reduce puddling, scale formation, kogation and corrosion, and as such lead to improved print quality.

US Patent:

6740689, May 25, 2004

Filed:

Oct 30, 2000

Appl. No.:

09/702185

Inventors:

Shirley Lee - Poway CA
Gary W Byers - Vista CA
Alexey S Kabalnov - Corvallis OR
Mark H. Kowalski - Westford MA
Amiya K. Chatterjee - San Diego CA
Keshava A Prasad - San Marcos CA
David M. Schut - Philomath OR

Assignee:

Hewlett-Packard Development Company, L.P. - Houston TX

International Classification:

C09D 1110

US Classification:

523160, 524555, 524548, 524556

Abstract:

Combinations of cationic underprinting fluids and anionic ink compositions that together achieve improved color quality and image stability in ink-jet printed images.

US Patent:

6790268, Sep 14, 2004

Filed:

Oct 24, 2001

Appl. No.:

10/084400

Inventors:

Shirley Lee - Poway CA
Grant A. Webster - Valley Center CA
Joe R. Pietrzyk - late of San Diego CA
Farzaneh Barmaki - Escondido CA

Assignee:

Hewlett-Packard Development Company, L.P. - Houston TX

International Classification:

C09D 1102

US Classification:

106 3136, 106 3168, 106 3158, 106 3186

Abstract:

The present invention is drawn to ink-jet ink compositions, methods, and systems for reducing satellite spotting around a printed image. Specifically, an aqueous ink-jet ink composition exhibiting a reduction in aerosol formation during printing, comprises an effective amount of an ink vehicle; an effective amount of at least one ink colorant; and from 5 to 200 ppm of a high molecular weight polysaccharide.

US Patent:

7066590, Jun 27, 2006

Filed:

Apr 1, 2004

Appl. No.:

10/817288

Inventors:

Shirley Lee - Poway CA, US
Gary W. Byers - Vista CA, US
Alexey S Kabalnov - Corvallis OR, US
Mark H. Kowalski - Westford MA, US
Amiya K. Chatterjee - San Diego CA, US
Keshava A Prasad - San Marcos CA, US
David M. Schut - Philomath OR, US

Assignee:

Hewlett-Packard Development Company, L.P. - Houston TX

International Classification:

B41J 2/01
C08L 39/00
C08L 33/08
C08L 25/08
C09D 11/10

US Classification:

347100, 347 98, 524555, 524556, 524577, 523160

Abstract:

Combinations of cationic underprinting fluids and anionic ink compositions that together achieve improved color quality and image stability in ink-jet printed images.

US Patent:

7173805, Feb 6, 2007

Filed:

Jul 20, 2004

Appl. No.:

10/896510

Inventors:

Shirley Lee - Poway CA, US

Assignee:

Hewlett-Packard Development Company, L.P. - Houston TX

International Classification:

H01G 9/00

US Classification:

361502, 4284231, 528 44

Abstract:

A polymer material comprising a polyol and at least one alkaline salt. The polyol comprises at least one moiety selected from the group consisting of ethylene glycol, di(ethylene glycol), tri(ethylene glycol), tetra(ethylene glycol), poly(diethylene glycol), poly(ethylene oxide), and mixtures thereof.