Patent ID: 8897681
Filing Date: 2014-11-25
Classification: G03G

Abstract:
1. An image forming apparatus comprising: an electrostatic latent image carrier configured to carry an electrostatic latent image thereon; a developing device including a toner carrier formed of a base carrying toner on an endless surface thereof, first electrodes aligned along a surface direction of the base and to which a first periodic pulse voltage is periodically applied, and second electrodes aligned along the surface direction of the base and to which a second periodic pulse voltage having a phase differing from a phase of the first periodic pulse voltage is periodically applied, the developing device configured to develop the electrostatic latent image carried on the surface of the electrostatic latent image carrier by a pulsed power supply including a first pulse output unit configured to output the first periodic pulse voltage having a mean potential with a polarity the same as a polarity of a normal toner charge, and a second pulse output unit configured to output the second periodic pulse voltage; a smoothing circuit configured to make the first periodic pulse voltage output from the first pulse output unit smooth to generate a smoothed first periodic pulse voltage as a direct voltage; and a toner layer thickness regulator member configured to regulate, on receiving the direct voltage generated from the smoothing circuit, a thickness of the toner layer on the surface of the toner carrier in a region between a toner supply position at which toner is supplied and the developing region formed between the toner carrier and the electrostatic latent image carrier before the toner layer on the surface of the toner carrier enters into the developing region.