| 摘要 |
PURPOSE:To well form an electrostatic latent image, to enhance durability and to simplify the constitution of the above device by providing an image supporting member with a front surface layer consisting of a dielectric material having heat resistance and release property and a rear surface layer consisting of an arom. high polymer material having an electrical conductivity. CONSTITUTION:An endless belt 1 which is an image supporting member consisting of a dielectric substance of the heat resistant high polymer material has the front surface layer 21 and the rear surface layer 22. The front surface layer 21 consists of the dielectric substance of the heat resistant high polymer material, such as fluororesin or silicone resin, about 10mum thick, having the release property. The rear surface layer 22 has a thickness of, for example, 10mum and is provided with such electrical conductivity that the electric resistance attains >=10<3> to <=10<8>OMEGA by incorporating conductive carbon particles into a polyimide resin which is one kind of the arom. high polymer materials. Since the rear surface layer 22 has the electrical conductivity, there is no need for bringing the conductive member into uniform contact with the belt from the rear surface side at the time of forming the electrostatic latent images. Since there is no need for providing the belt with metallic layers, etc., the difference of thermal expansion between the front surface layer 21 and the rear surface layer 22 is small and the good durability is obtd. |
