Paper processing apparatus and image forming device comprising detection means for punch debris

摘要

The present invention provides a paper processing apparatus comprising punching means for punching a hole in a sheet of paper, which is capable of detecting not only the accumulation position of punch debris, but also whether or not a punch debris storage member is attached, and an image forming system in which this paper processing apparatus and an image forming apparatus are provided integrally or separately. The paper processing apparatus comprises a punching blade for punching a hole in a sheet of paper discharged from the image forming apparatus, a punch debris conveyor belt for conveying the punch debris that is punched out of the paper by the punching blade, and a punch debris guide for conveying the punch debris that falls from the punching blade to a punch debris storage hopper for storing the punch debris. A punch debris sensor is disposed in the paper processing apparatus in order to detect the accumulation surface of the punch debris in an accumulation direction of the punch debris, which accumulates in the punch debris storage hopper from the punch debris guide.