Patent ID: 7970294
Filing Date: 2011-06-28
Classification: G03G

Abstract:
1. A document discharging apparatus, comprising: a first delivery roller delivering a document sheet discharged from a fixing unit; a second delivery roller installed downstream of the first delivery roller and discharging the document sheet to a paper delivery tray; a motor driving the second delivery roller independently of the first delivery roller; a lever installed at a side of the first delivery roller out of a document sheet transporting pathway, which rotates at a predetermined angle when in contact with the document sheet and returns to an original position when not in contact with the document sheet; a sensor sensing a rotation time and a returning time of the lever; and a controller determining a double feeding state of the document sheet based on the sensed rotation time and the sensed returning time of the lever, and controlling the driving speed of the motor to remain constant when the double feeding state is determined and the driving speed of the motor to decrease when the double feeding state is not determined.