ELECTROPHOTOGRAPHIC PHOTORECEPTOR AND ELECTROPHOTOGRAPHIC METHOD USING SAME, ELECTROPHOTOGRAPHIC DEVICE, PROCESS CARTRIDGE FOR ELECTROPHOTOGRAPHIC DEVICE, AND ELECTROPHOTOGRAPHIC PHOTORECEPTOR MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide electrophotographic photoreceptors which have high durability and suppress image deterioration such as afterimages due to a rise in residual potential or a charging decrease and with which images of high picture quality can be obtained in long-period repetitive use, an electrophotographic method which uses those photoreceptors, eliminates the need to replace photoreceptor, and can make a device compact as printing is made fast and photoreceptors are made compact and in which images of high picture quality can be obtained in long-period repetitive use, an electrophotographic device, and a process cartridge for electrophotographic device.;SOLUTION: An electrophotographic photoreceptor has a protective layer containing a solid lubricant of fluorinated carbon resin particulates formed as an outermost surface layer of a photosensitive layer formed on a conductive base, wherein the protective layer of the electrophotographic photoreceptor contains at least one kind selected between fluorinated carbon resin particulates of at least 20 to 50% in volume fraction and a compound expressed by a formula (1). In the formula (1), R₁ and R₂ represent a substituted or unsubstituted alkyl group and an aromatic hydrocarbon group and may be the same or different. Here, at least one of R₁ and R₂ is the substituted or unsubstituted alkyl group. Further, R₁ and R₂ may be bonded to each other to form an unsubstituted heterocyclic ring group containing a nitrogen atom. Then R2 represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aromatic hydrocarbon group, or a halogen atom, and (n) is 1 to 4.;COPYRIGHT: (C)2008,JPO&INPIT