| 摘要 |
<p>PURPOSE:To enable a paper supply roller to be very easily removably attached to a rotary shaft by forming an engaging portion of the paper supply roller to be removably attached to a locating member of the rotary shaft. CONSTITUTION:To mount a paper supply roller 14 on a rotary shaft 11, the paper supply roll 14 is inserted from the side having no stopper ring 12 of the rotary shaft 11, and the position of a locating pin 13 of rotary shaft 11 is set to that of an engaging lock groove 19a of paper supply roller 14. Under the condition, when the pin 13 is forcibly pushed into the lock groove 19a, the lock groove 19a proceeds expanding. When the locating pin 13 reaches a large diameter click portion provided in the intermediate portion of the lock grove 19a, the paper supply roller 14 is fixedly held on the rotary shaft 11 so that the rotary shaft 11 and paper supply roller 14 can rotate integrally.</p> |
