Toner for developing electrostatic images

摘要

A toner for developing an electrostatic image includes a binder resin, a colorant and a wax. The toner shows heat-absorption characteristics represented by a DSC heat-absorption curve obtained on temperature increase in a temperature range of 30 - 150 C by a differential scanning colorimeter (DSC). The DSC heat-absorption curve shows a maximum heat-absorption peak (P1) in a temperature range of 70 - 90 C. The DSC curve also provides a differential curve showing a first maximum (Max1) on a lowest temperature side at a temperature (T1) of 50 - 65 C, showing a second maximum (Max2) on a next lowest temperature side at a temperature (T2) of 65 - 85 C, and showing a minimum (Min1) on a highest temperature side at a temperature (T3) of at least 95 C. Because of the DSC heat-absorption characteristics, the toner exhibits excellent fixability (including anti-offset characteristic) over a wide temperature range and excellent continuous image forming characteristic.