Hp Scitex Ltd.

Hewlett-packard Development Company, L.p.

Hewlett-packard Indigo B.v.

Hewlett-packard Industrial Printing Ltd.

Kobi Cohen

Eytan Cohen

Alex Trubnikov

Or Brandstein

Ziv Belman

Yaron Grinwald

Gregory Katz

Benjamin Dayan

Kfir Dar

Yana Reznick

Adi Vinegrad

Efrat Soroker

Shimrit Rubin

Mazi Bar

Tzahi Maswari

Inbar Adi

Dayan Benjamin

An over-print varnish formulation is described. The formulation comprises a non-ionic polyurethane dispersion; a water-soluble polymer of Mless than 55,000; a wax having a particle size (d) 200 nm or less; and a water-soluble solvent, and at least 20 wt % solids, based on the total weight of the formulation. A method of printing using the formulation, and a printed article are also described.

Over-print varnish formulation

Herein is described a piezo-jettable varnish composition comprising a latex polymer having a weight averaged molecular weight Mw of greater than about 50 000, a polymeric salt derived from an acidic polymer having a weight averaged molecular weight Mw in the range of about 1000 to about 50 000, water, and a co-solvent, wherein, the latex polymer and polymeric salt are present in amounts such that the ratio of latex polymer to polymeric salt by weight is in the range of greater than about 1:1 to about 8:1.

Piezo-jettable varnish composition

A mill base composition includes a compound comprising a divinyl ester of a dicarboxylic acid, a dispersing agent, and a pigment. The divinyl ester of the carboxylic acid includes from 2 to about 8 carbon atoms. The mill base composition is subjected to milling with milling beads to produce a milled mill base composition that functions as a pigment concentrate that may be added to an ink vehicle to form an ink composition suitable for use in inkjet ink devices. The milled mill base composition is particularly suited for UV curable ink compositions. A UV curable ink composition includes the pigment concentrate, one or more UV curable monomers, and one or more UV initiators.

Mill base composition and UV curable ink composition comprising same

An indirect inkjet printing method including providing a jettable ink composition, jetting said ink composition on a surface of an intermediate transfer member forming a film having an image thereon, and transferring said image to a printable substrate. The jettable ink composition includes a hydrocarbon carrier liquid, colorant and polymeric binder resin which is soluble in the hydrocarbon carrier liquid.

Inkjet printing

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Netanya, Israel

Kobi Cohen