Patent ID: 8118296

Claim:
An image forming apparatus comprising: an image forming unit configured to form an image on a paper; a manual paper-feeding unit configured to stack paper provided on a housing of the image forming apparatus and configured to pivot upon an axis between an open position and a closed position; a paper cassette configured to stack paper that is arranged in and able to be drawn out of the housing; a paper carrying mechanism configured to carry the paper from any of the paper cassette and the manual paper-feeding unit to the image forming unit; a restricting unit that is a flap member pivotally coupled to the housing independently of opening and closing of the manual paper-feeding unit, abuts against the paper cassette when the paper cassette is set in the housing and when the manual paper-feeding unit is in the open position thereby restricting detachment of the paper cassette from the housing; and an urging member that, when the paper cassette is set in the housing and when the manual paper-feeding unit is in the open position, moves the flap member so as to abut against a side of the paper cassette thereby restricting detachment of the paper cassette.