Patent ID: 6248493
Filing Date: 2001-06-19
Classification: G03G

Abstract:
A toner for non-magnetic single component development, comprising at least a binder resin, a colorant, and a charge control agent,said binder resin comprises a polyester resin obtained by reacting (1) a divalent or higher epoxy component, (2) a dibasic or higher polybasic acid compound selected from a polybasic acid and/or acid anhydride and/or lower alkyl ester thereof, and (3) a divalent or higher polyvalent alcohol, andsaid polyester resin is obtained by the reaction of (1), (2), (3) in the presence of a catalyst by a reaction selected from the group consisting of dehydrocondensation reaction and ester exchange, to produce a polyester resin having a high crosslinking density.