Abstract: An electrophotographic photoreceptor includes a conductive support, and an undercoat layer, a charge generation layer, and a charge transport layer that are provided in this order on the conductive support, wherein the undercoat layer includes at least metallic oxide particles, a reactive acceptor substance including an anthraquinone structure expressed by the following Formula 1, and a binder resin, the charge generation layer includes hydroxygallium phthalocyanine as a charge generation material, and a reflectance of incident light having a wavelength of 780 nm on a surface of the charge generation layer when the charge transport layer is removed is 17% or greater: wherein the anthraquinone structure expressed by Formula 1 is bonded to another structure at a position of *, and thus forms the reactive acceptor substance, and in Formula 1, n1 represents an integer of 1 to 7.

Abstract: An electrophotographic photoreceptor includes a conductive support, an undercoat layer that is provided on the conductive support and that has a thickness of from 15 ?m to 40 ?m and has light transmittance of 20% or less with respect to light having a wavelength of 450 nm when the thickness is at least 15 ?m, a charge generation layer that is provided on the undercoat layer, and a charge transport layer that is provided on the charge generation layer and that has a thickness of from 15 ?m to 40 ?m and has light transmittance of 30% or less with respect to light having a wavelength of 450 nm when the thickness is at least 15 ?m.

Abstract: An image forming apparatus includes at least an electrophotographic photoreceptor having at least a conductive support, an undercoat layer, and a photosensitive layer; a charging device that charges the surface of the electrophotographic photoreceptor in a contact charging mode, in which only DC voltage is applied; an electrostatic latent image forming device that exposes the surface of the charged electrophotographic photoreceptor to form an electrostatic latent image; a developing device that develops the electrostatic latent image by a developer to form a toner image; and a transfer device that directly transfers the toner image from the electrophotographic photoreceptor to a transfer medium; and does not include an erasing device for erasing the surface of the electrophotographic photoreceptor after the toner image is transferred onto the transfer medium by the transfer device and before the surface of the electrophotographic photoreceptor is charged by the charging device.

Abstract: An image forming apparatus includes an electrophotographic photoreceptor, a charging unit charging the electrophotographic photoreceptor, an exposing unit exposing the charged electrophotographic photoreceptor to form an electrostatic latent image, a developing unit developing the electrostatic latent image to form a toner image, and a transferring unit transferring the toner image to a recording medium, but includes no erasing unit erasing the electrophotographic photoreceptor after the toner image is transferred and before the electrographic photoreceptor is charged. The electrophotographic photoreceptor has an undercoat layer and a photosensitive layer on a conductive substrate. The undercoat layer has metallic oxide particles and an electron-accepting compound. The electron-accepting compound is included at 1 part by weight to 5 parts by weight with respect to 100 parts by weight of the metallic oxide particles. A volume resistivity of the undercoat layer is in a range of 1.0×109 ?m to 1.0×1010 ?m.

Abstract: An image forming apparatus includes an electrophotographic photoconductor that includes an outermost surface layer containing a binder resin having a structural unit represented by general formula (A) below and a charge transporting material having a butadiene trimer structure in a single molecule, a charging unit that charges the electrophotographic photoconductor, an electrostatic latent image forming unit that forms an electrostatic latent image, a toner image forming unit that forms a toner image, and a transfer unit that transfers the toner image formed on the electrophotographic photoconductor onto a transfer-receiving body, where R11 and R12 each independently represent a halogen atom, an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 5 to 7 carbon atoms, or an aryl group having 6 to 12 carbon atoms; and a and b each independently represent an integer of 0 to 4.