Patent ID: 7666565
Filing Date: 2010-02-23
Classification: G03G

Abstract:
1. A method of forming electrophotographic toner, comprising: providing an organic solution containing a polymer resin and a solvent, wherein the solvent has a solubility of about 0.04 to 1 g/1g to water; providing an aqueous solution containing an anti-coagulant, wherein the anti-coagulant is present in an amount of 0.1-30 wt% of the aqueous solution, and the aqueous solution is 0.5 to 10 times the amount of the organic solution; adding the aqueous solution into the organic solution during 0-120 minutes to form a mixture solution containing colloidal polymer particles; agitating the mixture solution with an agitation speed of 400-3000 rpm during 1-240 minutes to aggregate and coalesce the colloidal polymer particles and remove the solvent without heating to solidify the aggregated and coalesced colloidal polymer particles to form toner particles.