Patent ID: 8329375
Filing Date: 2012-12-11
Classification: G03G

Abstract:
1. A method of producing a toner for developing an electrostatic charge image, the toner showing at least one first endothermic peak at a temperature range from about 45 to about 60° C., at least one second endothermic peak at a temperature range from about 65 to about 80° C., and at least one third endothermic peak at a temperature range from about 85 to about 100° C., the method comprising: kneading a toner forming material comprising an amorphous polyester resin, a crystalline polyester resin, and a releasing agent to obtain a kneaded material; cooling the kneaded material which has been formed by the kneading; and pulverizing the kneaded material which has been cooled by the cooling, the kneading comprising, with a temperature at which the third endothermic peak of the toner is generated being represented by Ta and a melting temperature of the amorphous polyester resin being represented by Tm, a first kneading in which the toner forming material is kneaded at a temperature from about Ta−10° C. to about Ta+10° C., and a second kneading in which the toner forming material which has been kneaded in the first kneading is kneaded at a temperature from about Tm−10° C. to about Tm+20° C.,