| 摘要 |
<p>PURPOSE:To surely make a cassette holder locked when a detecting switch operated by providing a lock detecting switch in a body with a locking member. CONSTITUTION:A detecting switch 23 is formed in a body with a locking claw 22 and a detecting piece 28 is positioned at the tip of a terminal 25 of the detecting switch 23. When the coupling shaft 36 of a cassette holder 30 enters the claw part 22d of the locking claw 22, the coupling shaft 36 presses the detecting piece of the detecting switch 23. Consequently, contact parts 25a, 24a of terminals 24 and 25 are brought into contact with each other, and the switch is turned on. Thus, the detecting switch 23 is turned on only when the coupling shaft 36 of the cassette holder 30 is at a position where the coupling shaft 36 can couple sufficiently.</p> |
