Electric stapler

An electric stapler comprising:

• a driver for driving leg portions of a bent-formed staple having a U-shaped section to penetrate the leg portions through a paper bundle;
• a table including a clincher for bending and forming the penetrated leg portions inwardly, the table for holding the paper bundle between the driver and the table;
• a motor for moving the table and the driver relative to each other;
• a photo sensor for detecting an existence of the paper bundle inserted into a gap between the table and the driver;
• and
• a control portion for driving the motor when the paper bundle is detected by the photo sensor,
• wherein the photo sensor is disposed on the table in such a manner that a detection point of the photo sensor for detecting the paper bundle exists upwardly of a disposing position of the clincher by inclining an optical axis direction of a radiation light to be emitted from the photo sensor in a direction of the clincher.