| 摘要 |
<p>PROBLEM TO BE SOLVED: To perform punching treatment of desired number of holes as required. SOLUTION: A paper punching device is disposed at the intermediate part of a paper conveying path so as to execute punching treatment to paper during conveyance. The paper punching device is provided with a first punching mechanism part formed of double-hole punching edges 15a, a second punching mechanism part formed of triple-hole punching edges 15b, a driving motor 27 provided in common to the first and second punching mechanism parts, and double-hole cams 16a and triple-hole cams 16b fitted in opposite phases so as to transmit driving force from the driving motor 27 selectively to the double-hole punching edges 15a or the triple-hole punching edges 15b.</p> |
