Patent classifications
G03G5/0575
Electrophotographic photoreceptor, manufacturing method of electrophotographic photoreceptor, image-forming apparatus and image-forming method
Disclosed is an electrophotographic photoreceptor including a conductive support, a photosensitive layer on the conductive support and a surface layer on the photosensitive layer. The surface layer includes a cured resin prepared by polymerization of a compound having two or more radically polymerizable functional groups per molecule, the cured resin containing an organic resin fine particle and a metal oxide fine particle, and the organic resin fine particle comprising a resin containing a structural unit derived from at least one of melamine and benzoguanamine, the organic resin fine particle having a number average primary particle size of 0.01 to 3.00 m.
ELECTROPHOTOGRAPHIC PHOTORECEPTOR, IMAGE FORMING APPARATUS USING THE SAME, AND IMAGE FORMING METHOD
An electrophotographic photoreceptor for use in an image forming apparatus having a proximity charge-type charging unit includes a conductive support and at least photosensitive layer and surface layer laminated in order on the conductive support, wherein the surface layer includes (A) a charge transport material, (B) a cured product of a composition containing a polymerizable compound and inorganic fine particles, and (C) organic fine particles, and the inorganic fine particles contain a metal oxide, has a surface treated with a surface treatment agent having a reactive organic group, and has a volume resistivity of 1.21011 .Math.cm or more.
ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS
An electrophotographic photosensitive member that can resist mass printing. The electrophotographic photosensitive member is an electrophotographic photosensitive member including a surface layer containing a binder resin and inorganic particles. The surface layer contains a urethane resin as the binder resin, wherein the value of the ratio of the volume of the inorganic particles to the volume of the binder resin in the surface layer is 0.10 or more and 3.0 or less. Protrusions derived from the inorganic particles are present on the surface of the surface layer. The inorganic particles to be incorporated into the surface layer have a number-based average primary particle diameter of 10 nm or more and 500 nm or less. The surface of the surface layer has a maximum height roughness Rz of 10 nm or more and 760 nm or less.