Patent ID: 7697868
Filing Date: 2010-04-13
Classification: G03G

Abstract:
1. A color image forming apparatus comprising: a plurality of photosensitive bodies, each photosensitive body being disposed to have a visible image formed thereon and each visible image having a different color; a light scanning device to scan a beam onto the plurality of photosensitive bodies to form electrostatic latent images on each of the photosensitive bodies; a plurality of developing devices to adhere a respective developer to the plurality of photosensitive bodies to form the visible images of respectively different colors on each of the photosensitive bodies; a transfer drum to rotate while contacting the plurality of photosensitive bodies such that the visible images formed on the plurality of photosensitive bodies can be transferred onto the transfer drum and overlapped; a transfer device to transfer the visible images overlapped on the transfer drum onto a printing medium; a motor to rotate the transfer drum; a photosensitive body driving gear to rotate with the transfer drum, wherein a radius of the photosensitive body driving gear is smaller than a radius of the transfer drum, and the photosensitive body driving gear and the transfer drum have a same rotational center; and a plurality of photosensitive body gears that are coupled to the respective photosensitive bodies and are engaged with the photosensitive body driving gear, wherein a radius of each of the photosensitive body gears is larger than a radius of each of the respective photosensitive bodies.