发明公开
EP1925983A3 Toner and developer, and image forming apparatus, image forming method and process cartridge 有权
调色剂和显影剂,图像形成装置,图像形成方法和处理盒

Toner and developer, and image forming apparatus, image forming method and process cartridge
摘要:
Provided is a toner that comprises a binder resin, a releasing agent, and a colorant, wherein the mass average particle diameter of the toner is 3 µm to 8 µm, the content of particles having a particle diameter of no more than 5 µm is from 60% by number to 90% by number, the binder resin comprises a polyester resin (A) having a softening temperature Tm(A) from no lower than 120°C to no higher than 160°C and a polyester resin (B) having a softening temperature Tm(B) from no lower than 80°C to lower than 120°C, and at least one of the polyester resins (A) and (B) is prepared by condensation polymerization between an alcohol component and a carboxylic acid component, and the alcohol component comprises divalent alcohol of 1,2-propanediol in a content of no less than 65% by mole and consists substantially of aliphatic alcohol; and also provided is a developer that comprises the toner and a carrier
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