Patent ID: 8592114

Claim:
A toner for developing electrostatic images, comprising external additives, and colored resin particles comprising a binder resin and a colorant, wherein the external additives contain external additive A and external additive B, wherein external additive A is fatty acid metal salt particles, and a content of the fatty acid metal salt particles is in the range from 0.01 to 0.5 part by weight with respect to 100 parts by weight of the colored resin particles, and wherein external additive B is spherical colloidal silica particles having a number average primary particle diameter of 30 to 80 nm and being surface-treated with a silane compound having an alkyl group of 8 to 20 carbons, and a content of the spherical colloidal silica particles is in the range from 0.3 to 2.0 parts by weight with respect to 100 parts by weight of the colored resin particles.