PUNCHING PROCESSING APPARATUS, SHEET POST-PROCESSING APPARATUS, AND IMAGE FORMING APPARATUS

摘要

A punching processing apparatus includes: a punching scrap collection member that is disposed at a position where punching scraps produced after punching a sheet drop; a punching scrap housing unit that is disposed in the punching scrap collection member and movable in a horizontal direction; a registration detection unit that is movable in a width direction of the sheet for detecting a positional deviation amount of the sheet in the width direction when a position of the sheet in the width direction is adjusted so as to meet a punching position, wherein punching scraps accumulated in the punching scrap housing unit are shaken and flattened out by causing the punching scrap housing unit to move in the horizontal direction in coordination with the movement of the registration detection unit.