Hewlett-packard Development Company, L.p.

Ervin Mubarekyan

Richard N Anderson

Keshava A Prasad

George Sarkisian

Yi-Hua Tsao

Dennis P Parazak

Xiaohe Chen

Mark L Choy

Christian Schmid

Richard B Anderson

Gary W Byers

Savka Ilieva Stoeva

Pradeep Kumar Koyadan Kizhakkedath

Tze Hwei Tseeng

Chris Schmid

Jennifer Tseeng

An inkjet ink set includes a black ink, a yellow ink, a cyan ink, and a magenta ink. The magenta ink includes an ink vehicle including a polyurethane binder, and a dispersed magenta pigment in the ink vehicle. The magenta pigment is chosen from Pigment Red 282.

Inkjet ink set

A fixer fluid composition, for inkjet printing, and ink set containing it. A disclosed example fixer fluid composition includes up to about 1.5 wt % of surfactants, from about 1 to about 20 wt % of humectants, from about 3 to about 16 wt % of a metal carboxylate salt as fixer agent, and an acid in view of adjusting the pH of said composition to a pH between about 5.0 and about 7.0. A disclosed example of ink set includes, at least, an ink composition including a colorant dispersed in an ink vehicle and said fixer fluid.

Fixer fluid composition and inkjet ink sets including the same

An inkjet fixer composition and a printing method and system used with the composition are disclosed herein. The composition includes: a) from 1 to 8 weight percent cationic polymer; and b) from 0 to 2 weight percent of at least one surfactant selected from the group consisting of nonionic surfactant, cationic surfactant and combinations thereof; and c) an aqueous liquid vehicle. Upon overprinting the fixer composition with an ink-jet ink on a substrate, the fixer composition vehicle and the ink-jet ink vehicle form a vehicle mixture on the substrate after which the vehicle mixture penetrates into the substrate, and an ink image is formed on the substrate.

Slow-penetrating inkjet fixer composition and methods and systems for making and using same

A fixer fluid for an inkjet ink set includes an aqueous vehicle, and a tri-alkyl-substituted amine-N-oxide. The fixer fluid also includes an acid, a cationic polyelectrolyte, or combinations of the acid and polyelectrolyte(s).

Fixer fluid and inkjet ink sets including the same

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San Diego, CA, United States of America

Ervin Mubarekyan