Hewlett-packard Development Company, L.p.

Amir Shapira

Eytan Cohen

Or Brandstein

Efrat Soroker

Richard Power

Benjamin Dayan

Elena Lugassi

Liat Neeman

Guy Peled

Ifat Zarski

James Lowndes

The present invention is drawn to photo-curable ink-jet ink compositions, systems, and methods. One exemplary ink-jet ink composition includes a liquid vehicle, a milled pigment, a photo initiator and a halogenated polyolefin. In this embodiment, the addition of the halogenated polyolefin improves adhesion to a non-porous substrate or a low surface tension substrate such as polypropylene.

UV curable ink with improved adhesion

The present invention is drawn to photo-curable ink-jet ink compositions, systems, and methods. One exemplary ink-jet ink composition includes a liquid vehicle, a milled pigment which has been milled in a milling solvent having minimal to no gas solvency for the milled pigment, and a photo initiator. In this embodiment, the composition can be ink-jettable at frequencies of at least 29 KHz without requiring degassing during printing.

Photo-curable ink-jet ink compositions, systems, and methods

The present invention is drawn to ink compositions and methods for ink-jet recording. The ink compositions can include a non-aqueous HAPS-free solvent system; a binder system, including at least one of i) an acrylic resin, or ii) a first vinyl chloride-vinyl acetate resin, which is at least substantially soluble in the solvent system; and a pigment milled in the presence of a second vinyl chloride-vinyl acetate resin. Further, at least one solvent of the solvent system can serve as a dispersing and diluent solvent for the pigment.

Pigment-based non-aqueous ink-jet inks free of hazardous air polluting solvents

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Herzlia, Israel

Amir Shapira