Hewlett-Packard Development Company, L.p.

Max Yen

David Michael Ingle

Yi-Hua Tsao

George Sarkisian

Howard Doumaux

Paul Joseph Bruinsma

Yubai Bi

Phillip C Cagle

Eytan Cohen

Or Brandstein

Alex Trubnikov

Thomas W Butler

Elizabeth Ann Visnyak

Jon A Crabtree

Shimrit Rubin

Marisa Samoshin

Jessica Rikki Vosler

Maria Alexeevna Kabalnova

Or Pinkesfeld

Phillip C Cagle, Jr

Marisa Weaver

An example of a liquid ink includes a pigment dispersion, a polyurethane dispersion, a polytetrafluoroethylene wax emulsion, a co-solvent, and a balance of water. A particle diameter of a polytetrafluoroethylene wax in the polytetrafluoroethylene wax emulsion is less than 50 nm. Examples of the liquid ink may be incorporated into a thermal inkjet printing system.

Liquid ink containing polytetrafluoroethylene wax emulsion

An inkjet ink can include an ink vehicle and ink solids carried by the ink vehicle. The ink solids can include a pigment, 5 wt % to 40 wt % polymeric binder, and 0.3 wt % to 3 wt % wax. The wax can have a melting point of from 90&#xb0; C. to 115&#xb0; C. and an average particle size of from 0.1 &#x3bc;m to 0.5 &#x3bc;m. Further, the wax can include wax particles having a particle size greater than 1 &#x3bc;m but which are present at a quantity no greater than 0.1% of the total number of wax particles based on particle count.

Inkjet inks

An example of a liquid bonding agent, for a liquid ink including a wax emulsion in an amount less than 1% actives, includes a calcium salt, the wax emulsion, an acetylenic surfactant, a glycol, and a balance of water. The wax emulsion is present in the liquid bonding agent in an amount ranging from greater than 0% actives to about 2% actives. The liquid bonding agent is to be digitally printed with a thermal inkjet printhead on a substrate under the liquid ink.

Liquid bonding agent for liquid ink

The present disclosure is drawn to aqueous pigment co-dispersions. The co-dispersions include self-dispersed pigment with a chemically modified surface; released surface moieties from the self-dispersing pigment; pigment powder having the released surface moieties associated with pigment powder surfaces; polymeric dispersant; and water.

Aqueous pigment co-dispersions

An ink composition is described herein. In one example, an ink includes at least one pigment, at least one dispersant, and at least one durable polymer in a water-based dispersion medium including at least one hydrophilic solvent. The dispersant is present at from about 0.05 wt % to about 15 wt % of the ink composition. Further, the ink composition includes at least one dispersion additive.

Ink composition

The present disclosure provides ink-jet inks and associated methods. In one example, an ink jet ink can comprise an ink vehicle, a wax emulsion, and a latex particulate. The latex particulate can comprise multiple intermingled discrete polymer strands, including: a low Tg polymer strand having a Tg below 50&#xb0; C. and a high Tg polymer strand having a Tg at 50&#xb0; C. or above. Additionally, the Tg of the high Tg polymer strand can be at least 50&#xb0; C. greater than the Tg of the low Tg polymer strand.

Latexes and associated ink-jet inks

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San Diego, CA, United States of America

Max Yen