Back to results
US 10,761,445 B2Granted
Electrophotographic ink including pearlescent pigment
AssigneeHP Indigo B.V.
InventorsOlga Kagan, Emad Masoud, Yana Reznick, Rada Nuchimov, Danny Feldman, Haim Cohen, Shiran Zabar, Yaron Grinwald, Michael Kokotov
Life of this patent
Estimating the term…
Abstract
According to an example, a resin, a carrier liquid, and a pearlescent pigment may be mixed to form a liquid electrophotographic ink.
Claims11
A liquid electrophotographic ink comprising:
- A carrier liquid;
- a resin;
- and
- a pearlescent pigment encapsulated by the resin, wherein the pearlescent pigment includes alternating layers of a material with a low refractive index and a material with a high refractive index, wherein the material of the low refractive index is interchanged repeatedly with the material of the high refractive index;
- wherein the resin, the carrier liquid, and the pearlescent pigment are not subjected to mechanical deformation.
2 more elements
A method of forming a liquid electrophotographic ink composition comprising:
- admixing a resin, a carrier liquid, and a pearlescent pigment at a temperature above a cloud point for the resin up to about 140° C. to form a paste;
- diluting the paste to form a slurry;
- and
- forming a liquid electrophotographic ink with the slurry and a charge director;
- wherein the resin, the carrier liquid, and the pearlescent pigment are not subjected to mechanical deformation, wherein a temperature during the method of forming a liquid electrophotographic ink decreases from the temperature above the cloud point for the resin to about 20° C., and wherein the pearlescent pigment includes alternating layers of a material with a low refractive index and a material with a high refractive index that are interchanged repeatedly.
2 more elements
Dependencies are inferred from the claim text.