Patent ID: 7561828
Filing Date: 2009-07-14
Classification: G03G

Abstract:
1. An image-forming apparatus, comprising an electrophotographic photoreceptor, a charging unit, a light-exposure unit, a development unit, a transfer unit, and a controller that controls the traveling speed of the peripheral surface of the electrophotographic photoreceptor and thus makes a period from charging to development variable, wherein: the electrophotographic photoreceptor comprises an undercoat layer and a photosensitive layer; and the undercoat layer contains metal oxide fine particles with an acceptor compound added on the metal oxide fine particles in a content of about 0.01% to about 20% by weight and wherein the metal oxide fine particles with the acceptor compound added thereon are dispersed in a resin; and an image is formed by charging, light exposure, development and transfer while causing the peripheral surface of the electrophotographic photoreceptor to travel in a predetermined direction, wherein: the acceptor compound is one or more compounds selected from monohydroxyanthraquinone and aminohydroxyanthraquinone.