| 摘要 |
PROBLEM TO BE SOLVED: To provide a two-hole puncher which is short in a depth of a puncher base and has a large punching capacity.SOLUTION: A larger one of two-stage pinion gears is rotated by a rack gear connected to an outer case by pushing down the outer case, and a smaller one pushes down the rack gear attached with the a punching blade, thus punching a document. The smaller one of the inside two-stage pinion gears meshes therewith. |
