| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent erroneous insertion into a gap between the lower surface of a cassette holder and a back plate by increasing upward amt. of a cassette holder for the purpose of pinching the upper and lower surface of a cassette to be taken out. SOLUTION: After inserting the cassette, the cassette holder 1 having a hook for a loading lock and a hook for an engagement shaft on the lower surface is pressed downward from the side of a top plate 3 and is moved to the side of a chassis frame 5. An erroneous insertion preventing plate 10 is turned around a turning fulcrum 13 and along the lower surface of the cassette holder 1, so as to be entered between a position of a back surface of the cassette and the back plate 6, so that the loading lock hook is engaged with a slide lock shaft to complete the loading. Then, the erroneous insertion preventing plate 10 is turned around the turning fulcrum 13, and the engagement shaft 11 is moved along the lower surface of the cassette holder 1 and is engaged with the engagement shaft hook, so as to complete the upward positioning. The engagement shaft hook is formed in a J-shape in the direction of an angle being a little less than a right angle at a locus which is an end surface to be in contact with the engagement shaft 11, and is locked with the engagement shaft 11, so that erroneous insertion into a mechanism part is prevented by the erroneous insertion preventing plate 10.</p> |
