Patent ID: 9709913
Date: 2017-07-18
CPC Classifications: C09D,G03G,Y02P

Claim:
1. A method for processing a liquid electrostatic ink composition, the method comprising: providing an initial liquid electrostatic ink composition comprising chargeable toner particles dispersed in a first liquid carrier, removing at least some of the liquid carrier from the initial liquid electrostatic ink composition using supercritical fluid extraction to provide a concentrated composition comprising the chargeable toner particles, wherein the supercritical fluid extraction involves contacting a supercritical fluid with the initial liquid electrostatic ink composition, wherein the supercritical fluid is in a static state in an extraction chamber, and then inducing mass flow of the supercritical fluid past the liquid electrostatic ink composition, and adding a second liquid carrier to the concentrated composition to form a final liquid electrostatic ink composition.