ELECTROSTATIC CHARGE IMAGE DEVELOPING TONER

摘要

PROBLEM TO BE SOLVED: To obtain an electrostatic charge image developing toner having superior fixability, anti-offsetting property and blocking resistance by providing at least one endothermic peak in the range from a specified temperature to a melt flowage start temperature and allowing the total quantity of absorbed heat at the at least one endothermic peak to occupy a specified proportion or more of the total quantity of absorbed heat at endothermic peaks present in a specified temperature range. SOLUTION: The toner has at least one endothermic peak in the range from 25 deg.C to the melt flowage start temperature and the total quantity of absorbed heat at the at least one endothermic peak occupies >=35% of the total quantity of absorbed heat at endothermic peaks present in the range of 25-180 deg.C. The toner contains a bonding resin combined with a low softening component having an endothermic peak in a lower temperature range than the melt flowage start temperature of the bonding resin. A wax or a lubricant having a lower melting point than the melt flowage start temperature of the bonding resin is generally used as the low softening component. A flowability improver is preferably incorporated into the surface of the toner by >=0.4 wt.% of the amount of the toner.