Patent ID: 9034548
Filing Date: 2015-05-19
Classification: G03G

Abstract:
1. A toner comprising: a colorant; a releasing agent; and a binder resin, wherein the binder resin contains a crystalline polyester resin, and a non-crystalline polyester resin containing a urethane bond, or a urea bond, or both thereof, where the non-crystalline polyester resin containing a urethane bond, or a urea bond, or both thereof contains a first non-crystalline polyester resin containing a urethane bond, or a urea bond, or both thereof, and a second non-crystalline polyester resin containing a urethane bond, or a urea bond, or both thereof, wherein monomers constituting the first non-crystalline polyester resin contain an isocyanate monomer for forming the urethane bond, or the urea bond, or the both thereof, in an amount of 0.5 mol % or greater relative to a total amount of the monomers, wherein monomers constituting the second non-crystalline polyester resin contain an isocyanate monomer for forming the urethane bond, or the urea bond, or the both thereof, in an amount of 0.5 mol % or greater relative to a total amount of the monomers, wherein the first non-crystalline polyester resin has glass transition temperature of −60° C. or higher but lower than 10° C., and wherein the second non-crystalline polyester resin has glass transition temperature of 30° C. or higher but lower than 70° C.