Hewlett-packard Development Company, L.p.

Hp Indigo B.v.

Hewlett-packard Indigo B.v.

Mirit Shitrit

Yaron Grinwald

Chen Zigdon

Liora Braun

Albert Teishev

Inna Tzomik

Sasi Moalem

Ilanit Mor

Reut Avigdor

Gregory Katz

Fernanda Orlik

Julia Kornilov

Regina Guslitzer

Yana Reznick

Reut Diamant

Adi Vinegrad

Eviatar Golan

Adi Inbar

Here is provided a method of printing on a substrate, the method comprising: providing a substrate, wherein the substrate has been primed by a primer composition comprising water, an epoxide crosslinker, polyethyleneimine and a glycol co-solvent, the primer composition having formed a primer layer on the substrate, and printing an electrostatic ink on the primer layer. A fluid set comprising the primer composition and an electrostatic ink is also described herein.

Methods for printing on a substrate and related aspects

In an example of the disclosure, a priming lane and a non-priming lane are identified within an image frame to be printed by a printer. A line of molten wax is applied to the roller. The molten wax when cooled is to form a wax ridge upon the roller. The roller having the formed wax ridge is wetted with the primer. The wetted roller is rotated against the substrate to apply the primer. A first width of the wetted roller that does not include the wax ridge forms the priming lane upon the substrate. A second width of the roller that includes the wax ridge causes the primer to not transfer and thereby forms the non-priming lane upon the substrate.

Selective application of primers

A method is described in which a spectrum of a surface of a photoconductor member is obtained using optical spectroscopy; and an extent of oxidation of the surface is determined based on the obtained spectrum.

Determining oxidation of photoconductor members based on obtained spectrum from optical spectroscopy

A liquid toner for printing conductive traces is provided. The liquid toner includes a carrier liquid and toner particles dispersed in the carrier liquid. The toner particles include a low symmetry electrically conducting material dispersed in a pigment.

Liquid toner containing a low symmetry electrically conducting material for printing conductive traces

The present disclosure relates to a method for coating conductive metallic pigment particles, the method comprising: providing a first liquid carrier containing a dissolved resin and suspended conductive metallic pigment particles; effecting precipitation of the resin from the first liquid, such that a coating of the resin is formed on the conductive metallic pigment particles. Also disclosed herein are conductive metallic pigment particles, and an electrostatic ink composition comprising coated conductive metallic pigment particles.

Metallic pigment particles and electrostatic inks

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Yavne, Israel

Mirit Shitrit