TONER, DEVELOPER, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE

摘要

PROBLEM TO BE SOLVED: To provide a toner that has excellent low-temperature fixability and heat-resistant storage stability, and can suppress the occurrence of aggregation of toner particles in a developing unit.SOLUTION: A toner contains a binder resin; the binder resin contains a crystalline resin; the maximum endothermic peak temperature (P1) of the toner at the first temperature rise in differential scanning calorimetry is 50°C to 80°C; the total of the endothermic amounts (Q) is 35 J/g to 90 J/g; and a ratio of the total of the endothermic amounts (Q) in a temperature range of 20°C or more and the maximum endothermic peak temperature (P1) or less to the total of the endothermic amounts (Q) (Q/Q) is 0.65 to 0.83.