Patent ID: 7954812

Claim:
An image processing apparatus comprising: a transport member for transporting a sheet through an image processing unit; a driving mechanism for transmitting a driving force to the transport member; an access cover for opening a portion of a sheet transport path; and a driving switching unit for transmitting the driving force of the driving mechanism or cuts off the transmission of the driving force in operative association with opening or closing of the access cover, wherein the driving switching unit includes a sun gear, a planetary gear engaged with the sun gear, and a driven gear, wherein the planetary gear engages with the driven gear to transmit the driving force when the sun gear rotates in a first direction, and the planetary gear separates from the driven gear to cut off the transmission of the driving force when the sun gear rotates in a second direction opposite to the first direction in a state that the access cover is closed, and wherein the driving switching unit cuts off the transmission of the driving force to the transport member when the access cover is opened.