Patent ID: 7761034

Claim:
An image forming apparatus including a charging means, a developing means, a transferring means, a cleaning means, and a discharging means which are arranged in sequence around a monolayer type electrophotographic photoconductor, wherein; the charging means is a means for positively charging the surface of the monolayer type electrophotographic photoconductor, a pre-charging means having a conductive brush composed of a conductive substrate and conductive brush filaments, is arranged between the cleaning means and the discharging means, and the bending ratio (K) of the conductive brush filaments on the surface of the photoconductor satisfies the following relational expression (1) in which a (mm) is the minimum distance between the conductive substrate and the surface of the monolayer type electrophotographic photoconductor and b (mm) is the filament length of the conductive brush filaments: Bending ratio ( K )=( b−a )/ b≦ 0.18 (1).