Shunqiong Y Yue

US Patent:

6436180, Aug 20, 2002

Filed:

Mar 31, 2000

Appl. No.:

09/540102

Inventors:

Zeying Ma - San Diego CA
Rodney D. Stramel - San Diego CA
Shunqiong Yue - San Diego CA
Hsin-Chieh Chou - San Diego CA
Duane G. Canfield - Escondido CA

Assignee:

Hewlett-Packard Company - Palo Alto CA

International Classification:

C09D 1102

US Classification:

106 3159, 106 3189, 106 3158, 106 3186, 106 3175, 106 3143

Abstract:

An ink jet ink composition is provided for large format printers for printing on both porous, non-porous, and hybrid glossy media. The ink composition comprises at least one water-soluble dye and a vehicle comprising at least one co-solvent and at least two different surfactants, a non-ionic surfactant and a fluoro-surfactant. The total surfactant concentration ranges from about 0. 1 to 5 wt % of the ink composition. The non-ionic surfactant is present in a range of about 0. 05 to 3 wt % of the ink composition, while the fluoro-surfactant is present in a range of about 0. 001 to 3 wt % of the ink composition. The ink formulation that works well with porous, non-porous, and hybrid glossy media and provides substantially instant ink drying and light fastness of the ink. Further, the ink formulation evidences excellent image quality. The ink can also pass harsh pen material compatibility tests.

US Patent:

6444017, Sep 3, 2002

Filed:

Oct 30, 2000

Appl. No.:

09/702169

Inventors:

Shunqiong Yue - San Diego CA
George M. Sarkisian - San Diego CA

Assignee:

Hewlett-Packard Company - Palo Alto CA

International Classification:

C09D 1102

US Classification:

106 3128, 106 3158, 106 3186, 106 3137, 106 3169, 106 3143, 106 3175

Abstract:

The present invention is directed to aqueous based ink compositions for ink jet printing on offset media and offset ink comprising combinations of dye-based and pigment-based colorants, and optionally surfactants. Optionally solvents and binders can be also added. In another formulation, an effective amount of the combination of ink colorants, at least one surfactant, being present at from about 0. 1% to 1. 5% by weight and an effective amount of at least one binder (such as an acrylate binder) is disclosed.

US Patent:

6461418, Oct 8, 2002

Filed:

Sep 28, 2000

Appl. No.:

09/675043

Inventors:

Shunqiong Yue - San Diego CA
George M. Sarkisian - San Diego CA
Mark L. Choy - San Diego CA
Yi-Hua Tsao - San Diego CA
Howard A Doumaux - San Diego CA

Assignee:

Hewlett-Packard Company - Palo Alto CA

International Classification:

C09D 1102

US Classification:

106 3158, 106 3186, 106 3137, 106 3169, 106 3143, 106 3175

Abstract:

The present invention is directed to aqueous based ink compositions for ink jet printing on offset media and offset ink comprising various combinations of nonionic surfactants. Such formulations include effective amounts of an ink colorant and a nonionic surfactant having an HLB value from about 4 to 14. Optionally, additional nonionic surfactants, solvents, and binders can be added. In another formulation, an effective amount of an ink colorant, at least two nonionic surfactants, each being present at from about 0. 01% to 10% by weight (preferably 0. 01% to 2% by weight) and an effective amount of at least one binder (such as an acrylate binder) is disclosed.

US Patent:

6630017, Oct 7, 2003

Filed:

Mar 21, 2001

Appl. No.:

09/813516

Inventors:

Zeying Ma - San Diego CA
Kai Kong Iu - San Diego CA
Rodney D. Stramel - San Diego CA
Shunqiong Yue - San Diego CA

Assignee:

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

International Classification:

C09D 1102

US Classification:

106 3159, 106 3158, 106 3186, 106 3189

Abstract:

An ink jet inkset is provided for image printers, in particular large format printers, for printing on both porous, non-porous, and hybrid glossy media. The inket contains a black ink and one or more color inks, said color ink composition comprises at least one water-soluble dye and a vehicle comprising at least one co-solvent and at least two different surfactants, a non-ionic surfactant and a fluoro-surfactant. The total surfactant concentration ranges from about 0. 05 to 6 wt % of the ink composition. The non-ionic surfactant is present in a range of about 0. 05 to 3 wt % of the ink composition, while the fluoro-surfactant is present in a range of about 0. 001 to 3 wt % of the ink composition. The ink formulation that works well with porous, non-porous, and hybrid glossy media and provides substantially instant ink drying and light fastness of the ink. Further, the ink formulation evidences excellent image quality.

US Patent:

6726757, Apr 27, 2004

Filed:

Oct 19, 2001

Appl. No.:

10/035656

Inventors:

George M. Sarkisian - San Diego CA
Shunqiong Yue - San Diego CA
David Jenkins - San Diego CA

Assignee:

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

International Classification:

C09D 1102

US Classification:

106 3158, 106 3186, 106 3159, 106 3189, 106 3187

Abstract:

Ink additives that reduce the deceleration of inks containing a polymer, such as acrylate binders, are disclosed. In accordance with the invention, an ink-jet liquid, an ink-jet liquid set, and the method for using the same are provided, wherein the one of the liquids comprises an aqueous vehicle, and a deceleration-alleviating component. The present formulations are used to formulate ink-jet liquids, and more particularly, to provide enhanced drop ejection performance in inks containing a polymer, such as deceleration (rapid drop velocity degradation during continuous operation of the firing resistor), when the liquid contains a deceleration-alleviating agent, such as, an aromatic glycol ether, a polar solvent and a long alkyl chain surfactant.

US Patent:

7501016, Mar 10, 2009

Filed:

Jun 20, 2006

Appl. No.:

11/471269

Inventors:

Shunqiong Yue - San Diego CA, US
Howard A. Doumaux - San Diego CA, US

Assignee:

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

International Classification:

C09D 11/00

US Classification:

106 316

Abstract:

A gray ink composition includes an ink vehicle having a black pigment and at least one color pigment dispersed therein. An anionic dispersant is: a) dispersed in the ink vehicle; b) associated with at least a portion of a surface of at least one of the dispersed black pigment or the at least one dispersed color pigment; and/or c) combinations thereof. At least one of the black pigment or the color pigment(s) has an anionic surfactant that is associated with at least another portion of the surface thereof.

US Patent:

8075122, Dec 13, 2011

Filed:

Jul 31, 2006

Appl. No.:

11/496534

Inventors:

Shunqiong Yue - San Diego CA, US
Peter C. Morris - San Diego CA, US
Zeying Ma - San Diego CA, US
David Mahli - San Diego CA, US
Howard A. Doumaux - San Diego CA, US
Gregg A Lane - San Diego CA, US
John M Gardner - San Diego CA, US

Assignee:

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

International Classification:

C09D 11/00

US Classification:

347100, 347 98, 106 316, 523160

Abstract:

An inkjet ink set includes eleven colored inks and a surface enhancing ink. The eleven colored inks include a magenta ink, a light magenta ink, a yellow ink, a cyan ink, a light cyan ink, a medium gray ink, a light gray ink, a photo black ink, a red ink, a green ink, and a blue ink. The surface enhancing ink is configured to enhance gloss of an image formed with at least one of the eleven colored inks.

US Patent:

8425028, Apr 23, 2013

Filed:

Sep 8, 2008

Appl. No.:

12/677797

Inventors:

Shunqiong Yue - San Diego CA, US
Dennis Z. Guo - San Diego CA, US

Assignee:

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

International Classification:

G01D 11/00

US Classification:

347100

Abstract:

The present invention is drawn to systems and methods for suppressing damaging effects from dissolution of silica present in an ink-jet printhead which contains high pH, pigmented ink. The systems and methods suppress the damaging effects of dissolution of silica by the action of a basic ink by adding a metal ion to the ink composition which forms a complex with the silica. The metal ion passivates the silica thus retarding the dissolution of silica thereby reducing promotion of ink kogation, silicate ring formation, and silicate deposit on ink-jet printhead resistors which effectively improves durability and shelf life of the ink-jet printhead.