| 摘要 |
<p>PURPOSE:To make the function of jump-out prevention stable by fitting the 1st projection provided to a cartridge and the 2nd projection provided to a holder fitted to the 1st projection through the exertion of a force to the receiving cartridge. CONSTITUTION:A cartridge holder 4 having a step difference 3 engaging with a projection 2 placed at the bottom of a cartridge 1 is driven by a load motor 10. The cartridge 1 in the holder 4 is pressed to the holder 4 by a set roller 13 via a set roller shaft 12 retracted in the direction of the floor of the holder 4 by the hold spring 11. The shaft 12 is guided by a shaft guide 14 provided on the holder 4 and pushed up by the cartridge 1 when the cartridge is entered. The cartridge 1 presses the holder 4 by the roller 13 to release the engagement between the projection 2 and the step difference 3 thereby preventing the cartridge 1 from being jumped out of the holder 4.</p> |
