Patent ID: 8642238
Filing Date: 2014-02-04
Classification: G03G

Abstract:
1. A toner comprising: a core particle; and fine resin particles, the core particle containing at least a binder resin, a releasing agent and a colorant, wherein the toner is in shape of particles, and each toner particle has a sea-island structure having the core particle and island portions, which are convex portions formed from the fine resin particles on a surface of the core particle, wherein the binder resin contains at least a first resin and a second resin, and the fine resin particles are each made of a third resin, wherein the first resin is a crystalline resin, and the second resin and the third resin are each a non-crystalline resin, wherein the second resin has a glass transition temperature (Tg2) and the crystalline resin has a melting point (Tc1) where the glass transition temperature (Tg2) is higher than the melting point (Tc1), and wherein the third resin has a glass transition temperature (Tg3) and the toner has a glass transition temperature (Tgt) where the glass transition temperature (Tg3) is higher than the glass transition temperature (Tgt).