Patent ID: 7110699
Filing Date: 2006-09-19
Classification: G03G

Abstract:
1. In an image forming apparatus for causing a charging member, applied with a charge bias of preselected polarity, to uniformly charge a surface of an image carrier in contact with or in the vicinity of said surface to thereby form a latent image, developing said latent image with toner to thereby produce a corresponding toner image, and electrostatically transferring said toner image to a recording medium, temporary holding means is provided for causing a brush member, which contacts said surface of said image carrier with bristles, to collect, among residual toner grains left on said surface after transfer of the toner image, toner grains of opposite polarity opposite to said preselected polarity from said surface when applied with a hold bias of a same polarity as said preselected polarity and release said toner grains of opposite polarity to said surface at a preselected timing when applied with a release bias of polarity opposite to said preselected polarity, and said surface and said bristles contact each other under a pressure of 40 g/cm 2 or above.