| 摘要 |
PROBLEM TO BE SOLVED: To provide an image forming apparatus and a process cartridge excelling in wear resistance and image deletion preventing property, which stably provide proper electrophotographic images over a long period of time. SOLUTION: The image forming apparatus and the process cartridge include at least an electrophotographic photoreceptor and a developing means that develops an electrostatic latent image on the electrophotographic photoreceptor with toner to form a toner image, and are such that: the electrophotographic photoreceptor has an outermost surface layer containing a charge transport material and at least one kind of curable resin selected from a group consisting of phenolic resin, epoxy resin and melamine resin; and in the toner, the concentration of an ammonium ion obtained by ion chromatography is 50 to 300 ppm. COPYRIGHT: (C)2010,JPO&INPIT
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