Developer, method of manufacturing the same and toner cartridge

摘要

A toner or developer is provided having toner particles which exhibit a higher glass transition temperature on their surface than the interior thereof. In one aspect, the toner particles contain a crystalline polyester resin, an amorphous polyester resin and a coloring material, in which the core of the toner particles exhibit the glass transition temperature g of from 30° C. to 45° C. and the surface of the toner particles exhibits the glass transition temperature of from 50° C. to 70° C.

主权项

1. A toner comprising:
toner particles, each having a core and a surface that have common components therein, wherein the cores of the toner particles each have a glass transition temperature of from 30° C. to 45° C., and the surfaces of the toner particles each have a glass transition temperature of from 50° C. to 70° C., the common components include at least a crystalline polyester resin, an amorphous polyester resin, and a coloring material, and the quantity of the crystalline polyester resin in the common components is less than the quantity of the amorphous polyester resin in the common components, by weight.