Hp Indigo B.v.

Shiran Zabar

Yaron Grinwald

Olga Kagan

Danny Feldman

Rada Nuchimov

Guy Nesher

Albert Teishev

Gil Bar-Haim

Haim Yosef Cohen

Shahar Stein

Tony Azzam

Gleb Romantcov

Emad Masoud

Samer Farran

Michael Kokotov

Eyal Negreanu

Alina Grishman

Yana Reznick

Gil Bar-haim

A method for producing a conductive liquid electrophotographic ink composition is described, the method comprising: heating a polymer resin in a carrier fluid to dissolve the polymer resin; adding conductive metallic pigment particles to be coated to the carrier fluid; cooling the carrier fluid to effect precipitation of the polymer resin from the carrier fluid such that a coating of the resin is at least partially formed on the conductive metallic pigment particles; reheating the suspension of partially coated conductive metallic pigment particles in the carrier fluid; and cooling the carrier fluid at a controlled rate to effect precipitation of the polymer resin from the carrier fluid such that a coating of the resin is formed on the conductive metallic pigment particles, thereby producing the conductive liquid electrophotographic ink composition.

Metallic pigment particles

According to an example, a resin, a carrier liquid, and a pearlescent pigment may be mixed to form a liquid electrophotographic ink.

Electrophotographic ink including pearlescent pigment

Disclosed herein is an electrostatic ink composition. The composition may comprise a carrier liquid, which has suspended therein: thermochromic pigment particles having a layer of thermoplastic resin thereon. Method for forming electrostatic ink composition and a substrate having the electrostatic ink composition printed thereon are also disclosed herein.

Electrostatic ink compositions

Herein is described a liquid electrostatic ink composition comprising a carrier liquid, a resin, a colorant selected from a magenta colorant, a cyan colorant and a black colorant, an amine-containing basic dispersant having a total base number (TBN) in the range of about 10 to about 65 mgKOH/g material, the amine-containing basic dispersant present in an amount from about 5 wt. % to about 40 wt. % by total weight of colorant.

Liquid electrophotographic ink composition

According to an example, an electrophotographic ink may include an adsorbent, a volatile fragrance, a resin and a carrier liquid.

Electrophotographic ink including a volatile fragrance

Growing community of inventors

Nes Ziona, Israel

Shiran Zabar