Abstract: An electronic copier is provided with a control section having a test mode whereby the inputs from various detectors positioned at various locations in the copier can be tested, and the results may be displayed on a display device normally used for displaying the number of copies to be made, etc.

Abstract: A checking apparatus for a copier includes check drive circuits having functions indentical to that of load driving circuits normally operated by a controller. The load driving circuits are bypassed in the check mode so that the loads are selectively operated by the check drive circuits, to test the output of a microprocessor or like device serving as a controller.

Abstract: A low cost original document handling apparatus for a copying machine for automatically discharging the original document from the platen after it has been copied. It is automatically driven for an electrically controlled time period by a helical spring drive system which automatically stores and subsequently utilizes the platen cover opening or closing force to eject documents and eliminate the cost and power consumption of a conventional electrically driven document drive system. It includes automatic over-winding protection. A dual function electromechanical release system automatically unlatches the platen cover after connecting the spring drive to eject the document.