Patent ID: 6879794
Filing Date: 2005-04-12
Classification: G03G

Abstract:
1. An image forming apparatus comprising a rotatable image carrier, and a charging means, an exposing means, a developing means, a transferring means and a cleaning means, which are sequentially arranged in the vicinity of the rotatable image carrier, wherein a toner remaining on the surface of the rotatable image carrier is removed by the cleaning means after going through the developing means and the transferring means; said cleaning means has an elastic blade, which is supported by a supporting member and is contacted with the surface of the image carrier at a contact pressure of not less than 8 g/cm and not more than 20 g/cm in terms of a linear pressure, and a press-contact angle of the elastic blade is not less than 12° and not more than 30°; and said image carrier is an organic electrophotosensitive material comprising a conductive substrate, and a single-layer type photosensitive layer made of a binder resin containing at least an electric charge generating material, an electric charge transferring material, and a hole transferring material, which is formed on the conductive substrate; wherein the solid content of the binder resin is not less than 50% by weight and not more than 70% by weight based on the whole solid content in the photosensitive layer and, moreover, a pair of paper transporting rollers are arranged on a path for transporting a transfer paper from a paper feeding portion to the transferring means, and a paper transporting roller at the side to be transferred among the pair of paper transporting rollers has a cleaning means for removing paper powders adsorbed on the paper transporting roller at the side of the surface to be transferred from the roller, wherein said paper rollers are composed of a first roller located at the side onto which a toner image is transferred and a second roller located opposite the transfer paper, wherein at least the surface layer of the first roller is a cylindrical material of polyoxymethylene (POM), the surface of the second roller is a cylindrical material of an ethylenepropylene (EPDM) rubber and the cleaning means is composed of a brush roller flocked with polyester fibers, a dusting plate, and a housing.