| abstract |
A toner for developing an electrostatic image is constituted by a binder resin and a hydrocarbon wax having a weight-average molecular weight of 800 to 3600. The toner is provided with good fixation characteristics including low-temperature fixability and anti-high temperature offsetting if the toner shows a storage modulus of at least 1x103 dyn/cm2, a loss modulus in the range of 5x102-5x104 dyn/cm2 and a ratio of loss modulus/storage modulus (loss tangent) of below 0.9 as measured under conditions of a frequency of 0.1 Hz and a temperature of 200 DEG C.; and the toner provides a DSC curve, as measured by a differential scanning calorimeter, showing an onset temperature of heat absorption of at most 105 DEG C. and a heat-absorption peak temperature in the range of 90 DEG -120 DEG C. on temperature increase, and a heat evolution peak temperature in the range of 62 DEG -75 DEG C. and a heat evolution peak intensity ratio of at least 2x10-3 on temperature decrease. |