IMAGE FORMING DEVICE AND IMAGE FORMING METHOD AND BELT TYPE PHOTORECEPTOR USED THEREIN

PROBLEM TO BE SOLVED: To prevent damage and the impossibility of traveling caused by belt type photoreceptor's running-on and to prevent the crack of a photoreceptive layer, the peeling of film and image defect even in the case of long-term repetitive use. SOLUTION: In this image forming device, the electrophotographic belt-type photoreceptor 1 having the photoreceptive layer consisting of a charge generating layer and a charge transporting layer on a supporting body consisting of high polymer material whose thickness is 50 to 100 μm is used and at least one of belt laid rollers 203 for the photoreceptor 1 abuts on the surface of the photoreceptive layer. The device is provided with a guide 201 on the back surface of the supporting body in order to regulate the traveling of the photoreceptor 1, and a distance L1 between the end/end of the guide 201 is shorter than the length of a circular arc L2 where the supporting body comes in contact with the roller 203 (L1