Patent ID: 9550903
Date: 2017-01-24
CPC Classifications: C01P,C09C,C09D,G03G,H01B

Claim:
1. A method for preparing an electrostatic ink composition that contains 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 carrier, such that a coating of the resin is formed on the conductive metallic pigment particles, wherein the effecting precipitation involves contacting a second liquid carrier with the first liquid carrier, the resin having a lower solubility in the second liquid carrier than the first liquid carrier; and after effecting precipitation of the resin from the first liquid carrier, removing the first liquid carrier to leave the conductive metallic pigment particles having the coating of the resin thereon dispersed in the second liquid carrier.