Color image forming apparatus having integral multiple length belt

A color image forming apparatus comprising:

• a photoconductive belt;
• latent image forming means for forming latent images each being representative of an image of particular color electrostatically on said photoconductive belt;
• developing means for developing each of the latent images with a developer of particular color to thereby produce a corresponding visible image;
• an intermediate transfer belt to which the visible images of respective colors are transferred from said photoconductive belt one above the other;
• and
• a drive transmission system comprising a first drive roller for driving said photoconductive belt, and a second drive roller for driving said intermediate transfer belt;
• said intermediate transfer belt having a circumferential length which is an integral multiple of a circumferential length of said second drive roller, said circumferential length of said second drive roller being an integral multiple of a circumferential length of said first drive roller;
• said intermediate transfer belt being provided with position information means for determining a time for forming the latent image on said photoconductive belt, said apparatus further comprising position information detecting means for detecting said position information means.