Hewlett-packard Development Company, L.p.

Hewlett-packard Indigo B.v.

Swissa Shay

Eyal Bachar

Albert Teishev

Yaron Grinwald

Nava Klein

Marc Klein

Stella Stolin Roditi

Ilanit Mor

Haim Yosef Cohen

Fernanda Orlik

Getahun Biadglin

Eyal Bodinger

Roi Liraz

Neta Filip-Granit

Merav Shapira

The present disclosure discloses a liquid electrophotographic ink. The ink includes a liquid vehicle, an ethylene acid copolymer, and an ethylene/(meth)acrylic acid C1-10 alkyl ester copolymer. Also disclosed is a method for the manufacture that ink and a method for performing a liquid electrophotographic process by printing a substrate with the ink.

Liquid electrophotographic ink

The present disclosure provides for a liquid electrophotographic (LEP) ink comprising a carrier fluid, a pigment, a high melt viscosity ethylene acrylic acid copolymer resin, and a high acid ethylene acrylic acid copolymer resin. The high acid ethylene acrylic acid copolymer resin can have an acid content of at least 15 wt % and a viscosity of at least 8,000 poise. Additionally, the LEP ink can have a total resin acidity of at least 15 wt % and a total resin melt viscosity of at least 20,000 poise.

Liquid electrophotographic inks

The present disclosure is drawn to LEP toners, systems, and methods of manufacturing LEP liquid toners. Specifically, a high NVS liquid toner can comprise a ground up admixture of a hydrocarbon carrier fluid, pigment particles, and a polymer paste having an NVS content of about 38 wt % to about 65 wt %. The resultant high NVS liquid toner has an NVS content of about 28 wt % to about 38 wt % and a viscosity of about 3,000 cPs to about 25,000 cPs.

High NVS liquid toner

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Rehovot, Israel

Swissa Shay