Toner with wax component for developing electrostatic image

DETAILED DESCRIPTION An object of the present invention is to provide a toner for developing an electrostatic image having solved the above problems.
A more specific object of the invention is to provide a toner for developing an electrostatic image excellent in low-temperature fixability and anti-offset characteristic and providing a wide fixable temperature range.
Another object of the invention is to provide a toner for developing an electrostatic image excellent in anti-blocking characteristic and free from lowering in developing performance during a continuous image formation operation.
Another object of the present invention is to provide a toner for developing an electrostatic image containing little amount of a wax component isolated from toner particles and not causing a blotch on a developing sleeve due to an ununiform thickness of a toner coat layer on the sleeve.
Another object of the invention is to provide a toner for developing an electrostatic image excellent in anti-electrostatic offset characteristic.
A further object of the invention is to provide a toner for developing an electrostatic image free from melt-sticking or filming of a toner component onto a photosensitive member.
According to the present invention, there is provided a toner for developing an electrostatic image, comprising: a binder resin, a colorant or a magnetic material, and a wax component; wherein the wax component provides a DSC curve on temperature increase, as measured by a differential scanning calorimeter, showing a minimum onset temperature of heat absorption of at least 50.
degree.
C.
and at least two heat absorption peaks including a largest peak and a second largest peak of which a lower temperature peak P.
sub.
1 and a higher temperature peak P.
sub.
2 have a peak temperature difference therebetween of at least 15.
degree.
C.
, the lower temperature peak P.
sub.
1 shows a half-value width of at most 20.
degree.
C.
between a lower half-width temperature L.
sub.
1 P and a higher half-width temperature H