IMAGE FORMING METHOD AND ELECTROPHOTOGRAPHIC DEVELOPER USED FOR THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a two-component developer which is capable of forming images of high image quality strong to the thermal stress and mechanical stress to toners and an image forming method using this developer. SOLUTION: The toners satisfying at least one requirement of a coefficient of dynamic friction of 0.18 to 0.30, a loose apparent density of >=0.30 g/cm<3> or a coagulation degree of <=30% are used in the oilless fixed image forming method using the two-component developer consisting of toners dispersed with wax and carriers. The doctor gap of the electrophotographic image forming device is 0.3 to 0.8 mm and the developer bulk density between a photoreceptor and a developer roller is 1.5 to 2.5 g/cm<3> .