Patent ID: 7643774

Claim:
A roller spacing apparatus of an image forming device, the apparatus comprising: a frame; a first rotatable roller member having a first shaft; a second rotatable roller member having a second shaft and being rotatable in close contact with the first roller member under a predetermined pressure; and at least one spacing part to space the first and the second roller members apart from each other by a predetermined gap such that the first and the second roller members are not in contact with each other when the first and the second roller members are not in use, the at least one spacing part including a bushing member having a bushing to rotatably support a first one of the first and second shafts on the frame and a lever positioned at the bushing to rotate the bushing, and the bushing has an outer diameter part and an inner diameter part to support the one of the first and second shafts, the inner and outer diameter parts being non-concentric circles such that a center point of the inner diameter part is at a different location from a center point of the outer diameter part, a stopping member disposed on the frame to restrict an operation range of the bushing, and a power transmitting member to selectively transmit an external rotation force to the bushing such that the bushing rotates in a direction; wherein the power transmitting member comprises: a power transmitting gear formed at a second one of the first and second shafts to be rotated by an external driving force, a rotary gear formed integrally with the bushing at the first one of the first and second shafts to be rotatable in combination with the bushing, and an idle gear having a partial tooth part that selectively transmits a rotation force of a first one of the rower transmitting gear and the rotary gear to a second one of the power transmitting gear and the rotary gear when the first one of the power transmitting gear and the rotary gear rotates.