Patent ID: 6421512
Filing Date: 2002-07-16
Classification: G03G

Abstract:
An image forming apparatus comprising:an image bearing member for bearing an electrostatic image; developing means for developing the electrostatic image on said image bearing member with toner electrically charged to a predetermined polarity; transfer means for transferring the toner image from said image bearing member to a transfer material; toner charging means for electrically charging residual toner remaining on said image bearing member to the same polarity as the predetermined polarity; and an image bearing member charging means for contacting to said image bearing member carrying the toner charged by said toner charging means to electrically charge said image bearing member to the same polarity as the predetermined polarity at a charging position, said image bearing member charging means being effective to change an amount of electric charge of the toner such that the amount of electric charge after the toner passes by the charging position is smaller than the amount of electric charge before the toner reaches the charging position.