Patent ID: 6330404
Filing Date: 2001-12-11
Classification: G03G

Abstract:
An image forming apparatus, comprising:a plurality of image beating members;image forming means for forming images of different colors on said image bearing members, respectively;a transfer material conveyer belt for carrying a transfer material;a driving roller for transmitting a driving force to said transfer material conveyer belt;wherein the images of different colors formed on said image bearing members are sequentially transferred in an overlying manner onto the transfer material carried on said transfer material conveyer belt;storing means for storing information on thicknesses of said transfer material conveyer belt at different positions in a movement direction thereof;detecting means for detecting a predetermined position of said transfer material conveyer belt; andcontrol means for controlling timing of start of image formation for each of said image bearing members by associated one of said image forming means on the basis of the information stored in said storing means and a result of detection by said detecting means.