Patent ID: 7471909
Filing Date: 2008-12-30
Classification: G03G

Abstract:
1. An image forming apparatus, comprising: an image bearing member including a photoconductive layer having a capacitance per unit area which is equal to or larger than 1.7×10 a developing device, which develops an electrostatic latent image formed on said image bearing member using a developer containing toner and a carrier to form a toner image on said image bearing member, said developing device including a developer carrying member, which carries the developer, a development bias voltage being applied to said developer carrying member, wherein the following Expression 1 is satisfied: where Q/M (C/g) indicates a quantity of electric charge per unit weight of the toner image formed on said image bearing member, Vcont (V) indicates a potential difference between a direct current component of the development bias voltage and a surface potential of said image bearing member with respect to a maximum density portion of the toner image formed on said image bearing member, M/S (g/m L L ε ε ε