Patent ID: 8486599

Claim:
A developer, which is used for an image forming apparatus capable of outputting a full-color image and a monochrome image, comprising: a color toner containing a coloring material, an amorphous polyester resin having a melting point (Tm 1 ) of from 115 to 130° C., a crystalline polyester resin, and an ester wax including ester compounds having an alkyl group and also having a carbon number of from 32 to 48; and a monochrome toner containing a coloring material, an amorphous polyester resin having a melting point (Tm 2 ) of from 140 to 155° C., a crystalline polyester resin, and an ester wax including ester compounds having an alkyl group and also having a carbon number of from 32 to 48, the Tm 1 and the Tm 2 satisfying the following formula (1): 10(° C.)≦ Tm 2 −Tm 1≦40(° C.) (1).