Patent ID: 7171151

Claim:
An image forming apparatus comprising: an image carrier having a photosensitive surface layer; a developing device for making a toner image by developing a latent image formed on the image carrier by using a toner comprising resin particles, which are obtained through particle formation in an aqueous medium; a transfer device for transferring the toner image on the image carrier onto a transfer material; and a cleaning device for removing residual toner remaining on the image carrier after transferring, wherein the cleaning device comprises: a cleaning roller having a conductive or semi-conductive resilient body; a cleaning blade made of a resilient material and provided downstream from the cleaning roller in the moving direction of the image carrier; a power source to apply a bias voltage on the cleaning roller; and a collecting member to collect the toner removed by the cleaning roller; wherein the absolute value of the charge amount of the toner used in the image forming apparatus is not less than 20 μC/g and not more than 50 μC/g, and wherein Dv and Dp of the toner used in the image forming apparatus have the relation expressed in the following formula: 1.3 >Dv/Dp> 1.0 wherein, Dv is volume average particle diameter, and Dp is particle number average particle diameter.