Patent ID: 6664016
Filing Date: 2003-12-16
Classification: G03G

Abstract:
A magenta toner comprising a binder resin, a colorant and a wax,said magenta toner having a storage elastic modulus at a temperature of 80Â° C., Gâ€²80, in the range of from 1Ã—106 dN/m2 to 1Ã—108 dN/m2 and a storage elastic modulus at a temperature of from 120Â° C. to 180Â° C., Gâ€²120-180, in the range of from 2Ã—103 dN/m2 to 1Ã—106 dN/m2; said binder resin containing a hybrid resin having a polyester unit and a vinyl copolymer unit; said colorant containing i) a compound selected from the group consisting of compounds represented by the following Formulas (1) and (2) and ii) a compound represented by the following Formula (3-1): wherein RD2 represents H or OCH3, RD4 represents H or CONH2, RD5 represents H, SO2N(C2H5)2, CONHC6H5, CONH2 or CONHC6H4-(p)CONH2, RK2 represents H, OCH3, CH3 or OC2H5, RK4 represents H, OCH3 or Cl, and RK5 represents H, OCH3, Cl or NO2; wherein RD2 represents H or SO3â€”, RD4 represents H, Cl or CH3, RD5 represents H, Cl, CH3, C2H5, or SO3â€”, and M represents Ba, Ca, Sr, Mn or Mg; provided that one of RD2 and RD5 is SO3â€”; said colorant being contained in an amount of from 2 to 15 parts by weight based on 100 parts by weight of said binder resin; and said wax being contained in an amount of from 0.1 to 20 parts by weight based on 100 parts by weight of said binder resin.