| 摘要 |
<p>PURPOSE:To put a mark in the center accurately without dislocation of the sheet by furnishing a marking means which is moved up and down by rotation of a cam so as to apply the mark in the center of the end of a sheet. CONSTITUTION:Current is supplied to a clutch 22 to couple a gear 21 with a cam shaft 16, and thereby a cam 15 is rotated to heave a cam roller 19 of a lever 17. This lever 17 rotates round a lever shaft 18, and a shaft 12 is pressed by the end of the lever 17 to lower a pen 11, and thus a mark is applied in the center of the end of sheet 2. When the cam 15 is rotated 180 deg. by the gear 21, current supply to the clutch 22 is shut off to disengage the gear 21 from the cam shaft 16 to cause stop of the cam 15. Accordingly the pen 11 is lifted by the pressing force of a spring 14 to separate from the sheet 2.</p> |
