Patent ID: 8431301

Claim:
A toner for developing an electrostatic charge image comprising a binder resin, a colorant and a releasing agent, wherein a content ratio of toner particles having a number particle diameter of 5.0 μm or more and less than 7.0 μm and a circularity degree of 0.980 or more is in a range of from 10 number % to 12 number % based on the total number of toner particles, a content ratio of toner particles having a number particle diameter of 7.5 μm or more and less than 15 μm and a circularity degree of 0.900 or more and less than 0.940 is 5 number % or less, based on the total number of toner particles, a number average particle diameter of the toner particles is in a range of from 3 μm to to 8 μm, an average circularity degree of the toner particles is in a range of from 0.940 to 0.980, and the binder resin comprises: a crystalline polyester resin; and a non-crystalline polyester resin that contains a resin of a high molecular weight component and a resin of a low molecular weight component.