Patent ID: 6064837
Filing Date: 2000-05-16
Classification: G03G

Abstract:
An image forming apparatus comprising:an image bearing member for bearing an electrostatic image;charging means for electrically charging said image bearing member, said charging means including electroconductive particles contacted to said image bearing member and a carrying member for carrying the electroconductive particles;a voltage applying means for applying a DC voltage or a DC-biased, AC oscillating voltage,wherein said charging means charges an image area of said image bearing member in which the electrostatic image is to be formed, by the oscillating voltage;developing means for developing, at a developing position, the electrostatic image, using a toner having the same polarity as a charging polarity of said charging means, and removing residual toner from said image bearing member;wherein said charging means charges a nonimage area with the oscillating voltage, after charging with the DC voltage is effected in the nonimage area, and when the charged area provided by the oscillating voltage is in the developing position, the operations of said developing means terminates.