Liquid inks comprising stabilizing plastisols

Abstract

This invention relates to a liquid ink for developing electrophotographic images comprising: a) a carrier liquid having a Kauri-Butanol number less than 30; b) a plastisol; c) a dispersant; and d) a charge director wherein: a. for a positive charge director, the dispersant has amine groups and the plastisol comprises polymeric particles having acid groups and an acid value between 30 and 150 mg KOH/g such that the mole ratio of the amine groups to the acid groups is between 0.075 and 0.3; and b. for a negative charge director, the plastisol comprises a polymer having an amine value between 5 and 200 mg KOH/g and the dispersant has acid groups such that the mole ratio of the acid groups to the amine groups is between 0.075 and 0.3.

Dependencies are inferred from the claim text.