Patent ID: 6304738
Filing Date: 2001-10-16
Classification: G03G

Abstract:
An image forming apparatus comprising:an image bearing member for bearing a latent image;a developing means for developing the latent image on said image bearing member to form a toner image by a developer containing a toner and a carrier; anda transfer means for transferring the toner image on a transfer material, the toner remaining on said image bearing member being collected into said developing means by said developing means after transfer by said transfer means;wherein when a weight average diameter of the toner in said developing means is set to D1, and a weight average diameter of a toner forming the toner image on said image bearing member is D2, D1.gtoreq.D2 is satisfied;wherein said developing means includes a developer bearing member for bearing the developer, an alternating-current voltage is applied to said developer bearing member, and a frequency of the alternating-current voltage is not less than 6 kHz and not more than 12 kHz; andwherein the alternating-current voltage is intermittently applied.