Patent ID: 7664443

Claim:
An image forming apparatus having an improved home position sensing structure of a transfer belt, comprising: a light penetrating portion formed at one side of an edge portion of the transfer belt; a protection tape adhered to both sides of the edge portion to cover the light penetrating portion; a guide member attached to one side of the protection tape; a plurality of rotation rollers driving the transfer belt in a caterpillar-type manner and including a guide groove formed at both ends of each rotation roller such that the guide member is received therein; and a sensing body receiving one end of the transfer belt to be positioned within the inside of the sensing body and positioning a first sensing element and a second sensing element within the sensing body such that a second distance from a transfer surface of the transfer belt to the second sensing element is longer than a first distance from the other surface of the transfer belt to the first sensing element, wherein the sensing body is positioned to be inclined at a predetermined non-zero angle toward the transfer belt, such that the second sensing element is positioned to be further away from the corresponding transfer surface of the transfer belt.