| 摘要 |
<p>PURPOSE:To surely perform inserting guidance and positioning of a small cassette in a cassette loading position with a simple structure. CONSTITUTION:A lower part of a cassette holder 2 is provided with a base plate 3 to be freely movable in the vertical direction. In the cassette loading position, a bottom surface plate 2b for a large cassette 41 of the cassette holder 2 and a bottom surface plate 3b of the base plate 3 for a small cassette 42 are independently arranged to have a difference in level. At the time of inserting the small cassette 42 into the cassette holder 2, the small cassette 42 is held on the bottom surface plate 3b of the base plate 3, and is also guided by both end peripheries 2d of the bottom surface plate 2b of the cassette holder 2. In a recording and reproducing position, the level difference between the bottom surface plate 2a of the cassette holder 2 and the bottom surface plate 3b of the base plate 3 is eliminated to be positioned in the same plane. Then, a door member 8 having an opening part 8a corresponding to the small cassette 42 is provided on the cassette holder 2, and is opened only when the large cassette 41 is inserted.</p> |
