| 摘要 |
<p>PURPOSE:To minimize a resistance force at the time of positioning and hence to make use of a motor having a small driving force by positioning a cassette by driving a withdrawal checking part into the best position of a positioning part. CONSTITUTION:A withdrawal checking part moving means 40 is constitutive of a roller (the withdrawal checking part) 25 for abutting a tape cassette 2 to be withdrawn at the time of opening a tape protection lid 16 so as to check the withdrawal and a cam 27 for regulating the withdrawal amt. of the cassette 2 in accordance with its position, etc. By this constitution, the withdrawal amt. of the cassette 2 in a cassette holder 7 is regulated by the roller 25. Then, just prior to inserting a positioning pin (positioning part) 19a into a reference hole 22 of the cassette 2, the roller 25 is driven by the cam 27 turned by a prescribed angle, so that the positioning is performed with the positioning pin 19a to coincide with the reference hole 22. Consequently, the positioning can be carried out by a small resistance force, thus enabling the use of a motor with a small driving force.</p> |
