TONER, DEVELOPER, PROCESS CARTRIDGE, IMAGE FORMING METHOD AND IMAGE FORMING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide electrophotographic toner which is appropriately controlled in agglomeration during toner transfer compression and after stress within a developing machine and in sticking force between toner particles, and thus ensures transferability and developability and the ability to form an image of high image quality without the effect of a transfer material.

SOLUTION: The electrophotographic toner contains at least a binder resin and a colorant. The electrophotographic toner has a value of D≤7.0 when bulk density (ρa) with a compression of 10 kg/cm2is 0.50 to 0.80 (g/cm2), a so-called dummy density (ρb) is 0.20 to 0.70 (g/cm2), an acceleration agglomeration degree is C%, and stress fluidity characteristic value is (D)=C×(ρa-ρb).

COPYRIGHT: (C)2003,JPO