Punching device, paper sheet processing apparatus, and image forming apparatus

摘要

A punching device includes: a punching member opens a punch hole on a sheet material on a die plate by penetrating a die hole provided to the die plate; a discharging member discharges static electricity charged on a punching chip generated by opening of the punch hole when the punching chip is guided to fall on the discharging member arranged on a lower side of the die hole and brought into contact with the discharging member; and a pressing member that presses the punching chip on the discharging member against the discharging member.

主权项

1. A punching device comprising:
a punching member to open a punch hole on a sheet material on a die plate by penetrating a die hole provided to the die plate; and at least two discharging members, on a relatively lower side of the die hole, to discharge static electricity charged on a punching chip, generated by the opening of the punch hole, upon the punching chip falling on and contacting at least one of the discharging members, each of the at least two discharging members including a plurality of discharge needles at least slightly downwardly extending in a falling direction of the punching chip, at least a partial overlap between the discharge needles of one of the at least two discharging members and the discharge needles of another of the at least two discharging members existing nearly perpendicular to the falling direction of the punching chip above a discharge space, the discharge needles of one of the at least two discharge members further being intermixed with discharge needles of the another of the at least two discharging members along a direction nearly perpendicular to the falling direction.