Processes for liquid developer compositions with high transfer efficiencies

Abstract

A process for the preparation of liquid developer compositions containing dyed polymer particles with an average diameter of from about 2 to about 6 microns, which particles are dispersed in an oil base, charge control additives, and stabilizers thereby permitting image transfer efficiencies exceeding 80 percent, which comprises formulating polymer particles by dispersion polymerization in a mixture comprised of a first oil base solvent, and a second solvent with a higher volatility than said first solvent, and further containing an amphipathic steric stabilizer; thereafter dyeing the product resulting; followed by removal of the more volatile second solvent; and subsequently adding to the dyed product a charge control additive.

Dependencies are inferred from the claim text.