Patent ID: 6238836
Filing Date: 2001-05-29
Classification: G03G

Abstract:
A toner composition for electrostatic image developing containing colored resin particles comprising at least a binder resin, a colorant, and a charge control agent, said binder comprises:(1) an epoxy compound with a valence of 5 or more,(2) a polybasic acid compound having a valence of 2 or more selected from the group consisting of a polybasic acids and/or acid anhydrides and/or lower alkyl esters thereof,(3) a polyvalent alcohol having a valance of 2 or more, andsaid binder resin is produced by reacting components (1)-(3) simultaneously, or by first reacting components (1) and (3), and subsequently reacting component (2), or by first reacting components (1) and (2), and subsequently reacting component (3).