Image forming apparatus.

摘要

Near a discharge means (48) for discharging paper (P) with an image formed thereon, there is provided a punching means (7) for punching holes. The drive of the discharge means (48) is scontroled to punch holes in the trailing portion of the paper (P), without causing crease and tear or change in the quality of the paper (P). Said punching means (7) includes punching cutters (72) and a punching die (74). The punching cutters (72) and the punching die (74) are provided in a unit (U) which can be drawn out of a casing (1) covering the punching means (7). With the unit (U) drawn out of the casing (1), jam recovery can be easily executed. The unit (U) is moved in the width direction of the paper (P), thereby to adjust a position of punch holes. A collecting box (76) for collecting paper scraps (P1) is disposed in the unit (U). If the collecting box (76) is turned or the opening (76a) thereof is lifted up when the unit (U) is turned, the paper scraps (P1) therein will not fall off. Delaying timing for plural punching cutters (72) to punch holes can reduce load on the drive system.