Patent ID: 7693479

Claim:
A duplex image forming apparatus comprising: a main body; a recording medium receiving unit disposed on one side of the main body to receive at least first and second recording media; a recording medium supplying unit to feed the recording media to a recording medium supplying path; an image forming unit to form an image on sides of the recording media; an exiting and reversing unit to selectively discharge the first recording medium formed with the image from the main body through a direct exiting path in an exiting mode, and/or to reverse a feeding direction of the first recording medium in a reversing mode; a duplex feeding unit to resupply the image forming unit with the first recording medium; a duplex feeding driving system to drive the duplex feeding unit such that a rear end of the first recording medium and a front end of the second recording medium are overlapped, to drive the duplex feeding unit to feed the overlapped first and second recording media along a duplex feeding path, and to drive the duplex feeding unit to separate the first recording medium and the second recording medium on the duplex feeding path after a predetermined time; a main driving system to drive the recording medium supplying unit to feed the recording media to a recording medium supplying path and to drive the image forming unit to form the image on the sides of the recording media; and an exiting and reversing driving system to drive the exiting and reversing unit to selectively discharge the first recording medium formed with the image from the main body through the direct exiting path in the exiting mode, and/or to reverse the feeding direction of the first recording medium in the reversing mode.