Patent ID: 7740999

Claim:
A toner comprising toner particles each containing at least a binder resin, a wax, and a colorant, wherein: the toner has (i) a glass transition temperature (TgA) measured with a differential scanning calorimeter of 40 to 60° C., (ii) a peak temperature (P1) of a highest endothermic peak measured with a differential scanning calorimeter of 70 to 120° C., and (iii) a viscosity at 100° C. measured by a flow tester heating method of 5,000 to 30,000 Pa·s; cyclohexane (CHX) insoluble matter in tetrahydrofuran (THF) soluble matter of the toner has (i) a glass transition temperature (TgB) measured with a differential scanning calorimeter of 80 to 120° C. and (ii) an acid value of 5 to 40 mgKOH/g; and the glass transition temperature (TgA) and the glass transition temperature (TgB) satisfy the following formula (1) 25° C.≦( TgB−TgA )≦70° C. Formula (1).