| 摘要 |
<p>PURPOSE:To smoothly perform a loading operation by providing a means for regulating energizing force to a cartridge and suppressing friction between a cartridge positioning hole and its positioning pin at the time of loading. CONSTITUTION:When a slide plate 99 is moved, an engagement surface 1292 of a cam part 129 is engaged with a guide roller 149 of an ejecting arm 145, and the arm 145 is slightly turned counterclockwise by the slide plate 99. Consequently, the arm 145 is separated with a guide roller 150 of its tip from a front surface 1531 of the cartridge 153, and afterward, no energizing force in the cartridge ejecting direction is given by a spring 181 to the cartridge 153. Under such a circumstance, the cartridge 153 can easily be moved within a cartridge holder, and when it is subsequently brought into a loading position, even in the case of a discrepancy in its position, no strong friction between the positioning hole and the positioning pin will tale place.</p> |
