Toner, image forming method and process-cartridge

Details Toner, image forming method and process-cartridge Toner, image forming method and process-cartridge

2006-04-11

2006-04-11

Dote, Janis L. (Department: 1756)

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Post imaging process, finishing, or perfecting composition...

C430S108800, C430S109300, C430S111400

Reexamination Certificate

active

07026086

ABSTRACT:
A toner formed of at least a binder resin, a colorant, a charge control agent and a wax, is provided with a uniform state of dispersion of the wax and good balance of low-temperature fixability and anti-high-temperature offset characteristic, while exhibiting good developing performances over wide environmental conditions. The toner is characterized in that (a) the binder resin comprises a hybrid resin component having a polyester unit and a vinyl polymer unit, (b) the toner exhibits a loss tangent (tan δ) of 1.0 at a temperature in a range of 80–160° C., and (c) the toner provides a DSC curve showing a heat-absorption peak in a temperature range of 85–130° C. on temperature increase as measured according to differential scanning calorimetry (DSC).

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