Patent ID: 9610795
Date: 2017-04-04
CPC Classifications: B27F,B42B,B42C,B65H,G03G

Claim:
1. A binding device comprising: a sheet-bundle forming unit configured to form a sheet bundle by receiving and stacking a plurality of sheets; a binding unit that includes a motor and that is configured to execute a series of operations including inserting opposite ends of a substantially U-shaped bent wire into the sheet bundle by utilizing a driving force from the motor, and bending the opposite ends; a power supply unit configured to adjust electric power and supply the adjusted electric power to the motor; a detector configured to detect, based on a rotational amount of the motor, a first timing for transitioning from a bending operation for bending the opposite ends of the wire that have pierced the sheet bundle to a recovery operation for recovering to an initial position upon completion of the bending operation; a first timekeeper configured to measure time from a start point of the series of operations to a first time point, which is an end of a scheduled period for detecting the first timing; a second timekeeper configured to measure time from the start point of the series of operations to a second time point, which is a start point of the schedule period and is reached prior to the first time point; a unit-of-processing manager configured to manage a unit of processing; and a supply power controller configured to, in response to the first timing being detected by the detector before the second time point measured by the second timekeeper is reached, cause the power supply unit to adjust the electric power supplied to the motor before the first timing is reached, such that the first timing is detected by the detector when or after the second time point measured by the second timekeeper is reached in the series of operations for a second sheet bundle that is to undergo a subsequent series of operations belonging to the same unit of processing as a first sheet bundle undergoing a current series of operations, and wherein the supply power controller is configured to cause the power supply unit to increase the electric power supplied to the motor in response to the first time point measured by the first timekeeper being reached before the first timing is detected by the detector.