Patent ID: 7132210

Claim:
An image-forming color toner, comprising: a colorant; a resin (A); a modified resin (B); and wax (a) as a mold releasing agent; wherein the image-forming color toner has a phase separated structure having the modified resin (B) as a domain in the resin (A) as a continuous phase, and the wax (a) being effectively contained in the modified resin (B), and the modified resin (B) comprises a wax part formed of the wax component (b), and a modified part having a vinyl monomer unit and an average ester group concentration of 8% weight to 30% by weight, and wherein 80% to 100% of all the wax contained in the image-forming color toner, is contained in the modified resin (B); wherein the modified resin (B) is a graft copolymer having a principal chain formed of the wax component (b) and a side chain formed of a vinyl polymer, and an average ester group concentration in the side chain being in the range of 8% by weight to 30% by weight; wherein the principal chain formed of the wax component (b) is a polyolefin resin, and the side chain formed of a vinyl polymer contains a styrene monomer, and at least one of an alkyl ester of an unsaturated carboxylic acid and a vinyl ester monomer, as a monomer unit.