Patent ID: 8409774
Filing Date: 2013-04-02
Classification: G03G

Abstract:
1. A toner for developing an electrostatic latent image, the toner comprising: a releasing agent; and a binder resin, wherein: the releasing agent includes at least a first releasing agent material and a second releasing agent material, the first releasing agent material having a different melting point compared to the second releasing agent material; and a differential scanning calorimetric curve, obtained by measuring the toner for developing the electrostatic latent image by means of a differential scanning calorimeter, exhibits a shoulder at a temperature in a range of 50° C. to 53° C. corresponding to a glass transition temperature of the toner for developing the electrostatic latent image, and also exhibits a local maximum point at a temperature in a range of 90° C. to 95° C., and wherein the differential scanning calorimetric curve exhibits an endotherm starting temperature caused by the releasing agent in a range of 65° C. to 70° C., an endotherm ending temperature caused by the releasing agent in a range of 135° C. to 140° C., a lowest endothermic peak temperature caused by the first releasing agent material in a range of 80° C. to 85° C., and a highest endothermic peak temperature caused by the second releasing agent material in a range of 127° C. to 133° C.; and the local maximum point is in a region below a baseline that connects an endotherm starting point corresponding to an endotherm starting temperature and an endotherm ending point corresponding to an endotherm ending temperature.