Patent ID: 8628901

Claim:
A toner for electrostatic image development, the toner comprising: toner particles containing a binder resin, wherein the binder resin contains a block copolymer having an A-S-A block copolymer structure including polymer blocks A composed of a structural unit derived from an alkyl methacrylate and a polymer block B composed of a structural unit derived from an alkyl acrylate, a glass transition point (TgA) of a homopolymer of the alkyl methacrylate forming the polymer blocks A is higher than a glass transition point (TgB) of a homopolymer of the alkyl acrylate forming the polymer block, B, the binder resin further contains a main resin other than the block copolymer, and a difference between an SP value of the homopolymer of the alkyl methacrylate forming the polymer blocks A and an SP value of the main resin is 0.1 or larger.