| 摘要 |
<p>PROBLEM TO BE SOLVED: To control drive torque of a stack motor M70 driving a stack tray 700 in accordance with a loading situation of sheets discharged from an image formation device to suppress power consumption of the device. SOLUTION: A finisher 500 having the stack tray 700 for loading sheets, the stack motor M70 for moving the stack tray 700, and a CPU circuit 5100 for controlling the stack motor M70 to perform predetermined treatment on the sheets has a detection means for detecting the sheet or the stack tray 700. The CPU circuit 5100 estimates an amount of sheets on the stack tray 700 based on a detection signal from the detection means to control a drive torque of the stack motor M70 based on the estimate value.</p> |
