An electric stapler is configured to perform binding processing including a plurality of processes. The electric stapler includes: a binding unit configured to execute the binding processing for a sheet bundle; a motor configured to drive the binding unit; and a control unit configured to control the motor. The control unit is configured to control the motor; thereby adjusting processing times of the processes so that a binding processing time after the binding processing by the binding unit starts until the binding processing is completed falls within a predetermined range.

An electric stapler includes a clamp part that is configured to include a first wall portion and a second wall portion for gripping a paper bundle, a penetration part that causes a staple to penetrate the paper bundle gripped by the clamp part, a clinch part that bends the staple penetrating the paper bundle to bind the paper bundle, a gripping release detection unit that detects that the paper bundle is released from gripping after the first wall portion moves in the direction of separating from the second wall portion from a state where the paper bundle is gripped by the clamp part; and an output unit that, after it is detected that the paper bundle is released from gripping of the clamp part, outputs a gripping release signal indicating that the paper bundle is released from gripping of the clamp part to an outside.

An electric stapler includes a clamp part, a penetration part, a clinch part, and a motor, the penetration part, and the clinch part. The electric stapler performs binding processing accompanying rotation of the motor by sequentially performing a clamping process, a penetrating process, and a clinching process. The electric stapler includes a first position detection unit that detects that a rotational position of the motor passes a first position, a braking unit that applies braking to the motor after it is detected that the motor passes the first position, a difference calculation unit that calculates a difference between a position at which the motor is stopped by the braking unit and a predetermined stop target position of the motor; and a motor control unit that moves a rotational position of the motor to the stop target position by rotating the motor forward or in reverse by the calculated difference.

An electric stapler includes a clamp part, a penetration part, a clinch part, and a motor, the penetration part, and the clinch part. The electric stapler performs binding processing accompanying rotation of the motor by sequentially performing a clamping process, a penetrating process, and a clinching process. The electric stapler includes a first position detection unit that detects that a rotational position of the motor passes a first position, a braking unit that applies braking to the motor after it is detected that the motor passes the first position, a difference calculation unit that calculates a difference between a position at which the motor is stopped by the braking unit and a predetermined stop target position of the motor; and a motor control unit that moves a rotational position of the motor to the stop target position by rotating the motor forward or in reverse by the calculated difference.

An electric stapler includes a clamp part that clamps a paper bundle, a penetration part that causes a staple to penetrate the paper bundle, a clinch part that bends the staple penetrating the paper bundle to bind the paper bundle, a driving unit that drives the clamp part, the penetration part, and the clinch part. The electric stapler performs binding processing by at least performing a clamping process of clamping the paper bundle with the clamp part, a penetrating process of causing the staple to penetrate the paper bundle with the penetration part, and a clinching process of bending the staple penetrating the paper bundle with the clinch part. The electric stapler includes a state detection unit that detects a state of the driving unit in each of the clamping process, the penetrating process and the clinching process, and a storage unit that stores the detected state.

An electric stapler includes a clamp part that clamps a paper bundle, a penetration part that causes a staple to penetrate the paper bundle, a clinch part that bends the staple penetrating the paper bundle to bind the paper bundle, a driving unit that drives the clamp part, the penetration part, and the clinch part. The electric stapler performs binding processing by at least performing a clamping process of clamping the paper bundle with the clamp part, a penetrating process of causing the staple to penetrate the paper bundle with the penetration part, and a clinching process of bending the staple penetrating the paper bundle with the clinch part. The electric stapler includes a state detection unit that detects a state of the driving unit in each of the clamping process, the penetrating process and the clinching process, and a storage unit that stores the detected state.

An electric stapler includes a clamp part, a penetration part, a clinch part, and a motor, the penetration part, and the clinch part. The electric stapler performs binding processing accompanying rotation of the motor by sequentially performing a clamping process, a penetrating process, and a clinching process. The electric stapler includes a first position detection unit that detects that a rotational position of the motor passes a first position, a braking unit that applies braking to the motor after it is detected that the motor passes the first position, a difference calculation unit that calculates a difference between a position at which the motor is stopped by the braking unit and a predetermined stop target position of the motor; and a motor control unit that moves a rotational position of the motor to the stop target position by rotating the motor forward or in reverse by the calculated difference.

An electric stapler includes a clamp part, a penetration part, a clinch part, and a motor, the penetration part, and the clinch part. The electric stapler performs binding processing accompanying rotation of the motor by sequentially performing a clamping process, a penetrating process, and a clinching process. The electric stapler includes a first position detection unit that detects that a rotational position of the motor passes a first position, a braking unit that applies braking to the motor after it is detected that the motor passes the first position, a difference calculation unit that calculates a difference between a position at which the motor is stopped by the braking unit and a predetermined stop target position of the motor; and a motor control unit that moves a rotational position of the motor to the stop target position by rotating the motor forward or in reverse by the calculated difference.

A stapler includes a main body, a magazine having a pair of sidewalls and a tip end wall, a driver, a clincher, and a cover. The magazine is configured to be movable between a first position and a second position. A staple is capable of being taken in and out from an opening formed above the pair of sidewalls and the tip end wall when the magazine is located at the second position. The cover is attached to the main body so as to be displaceable between a third position and a fourth position. When the cover is located at the third position and the magazine is located at the second position, the cover covers the pair of sidewalls, the tip end wall and the opening of the magazine in a state of protruding from the main body.

A stapler includes a main body, a magazine having a pair of sidewalls and a tip end wall, a driver, a clincher, and a cover. The magazine is configured to be movable between a first position and a second position. A staple is capable of being taken in and out from an opening formed above the pair of sidewalls and the tip end wall when the magazine is located at the second position. The cover is attached to the main body so as to be displaceable between a third position and a fourth position. When the cover is located at the third position and the magazine is located at the second position, the cover covers the pair of sidewalls, the tip end wall and the opening of the magazine in a state of protruding from the main body.