Patent ID: 8642237

Claim:
A toner comprising toner particles each of which comprises a binder resin, a colorant and wax, wherein the binder resin comprises a resin (a) having 50 percent by mass or more of polyester unit, and wherein, in the measurement of the endothermic amount of the toner by using a differential scanning calorimeter, (1) regarding the endothermic amount derived from the binder resin in the measurement at a temperature raising rate of 10.0° C./min, the peak temperature (T 10 ) of a maximum endothermic peak (P 10 ) is 50° C. or higher and 80° C. or lower, and the half-width (W 10 ) of the maximum endothermic peak (P 10 ) is 2.0° C. or more and 3.5° C. or less, and (2) W 1 , W 10 , and W 20 satisfy the following formulae (1) and (2), 0.20≦( W 1 /W 10)≦1.00 (1) 1.00≦( W 20 /W 10)≦1.50 (2) where W 1 (° C.) represents the half-width of a maximum endothermic peak (P 1 ) regarding the endothermic amount derived from the binder resin in the measurement at a temperature raising rate of 1.0° C./min, and W 20 (° C.) represents the half-width of a maximum endothermic peak (P 20 ) regarding the endothermic amount derived from the binder resin in the measurement at a temperature raising rate of 20.0° C./min, wherein the resin (a) is a block polymer of a resin component (a1) capable of forming a crystalline structure, and a resin component (a2) not forming a crystalline structure that is bonded to the resin component (a1), and wherein the resin (a) comprises 50 percent by mass or more of resin component (a1) capable of forming a crystalline structure.