Patent ID: 7764297
Filing Date: 2010-07-27
Classification: G03G

Abstract:
1. A photoreceptor cleanerless image forming apparatus to overlappingly form yellow, magenta, cyan, and black toner images, wherein said apparatus includes a control section that is configured to decrease color mixture or exposure error based on controlling a volume-based average particle diameter of toner, wherein said apparatus comprises four photoreceptor cleanerless developing apparatuses to overlappingly form yellow, magenta, cyan, and black toner images; and volume-based average particle diameters Pa, Pb, Pc, and Pd are configured to satisfy conditions of Pa≧Pb≧Pc≧Pd and Pa>Pd, where Pa, Pb, Pc, and Pd indicate volume-based average particle diameters of toners to be developed on a photoreceptor in the order of development.