| 摘要 |
<p>PURPOSE:To prevent mis-loading by providing a projection positioning a front and a rear side of a cassette to a tray. CONSTITUTION:A tray 16 has front projections 34, 35 on a bottom plate 30 corresponding to a standard cassette corresponding to notches 37, 38 of a front cover 36. Moreover, rear projections 39, 40 are provided to the left and right while being projected from a rear wall 33 in a form of semi-cylinder. Side walls 31, 32 have positioning projections 41 - 43. When a cassette 2 is loaded normally, the notches 37, 38 are engaged respectively with the front projections 34, 35, the front side face 45 is abutted on the projections 34, 35, the rear side face 46 is opposed to the side faces 39a, 40a of the rear projections 39, 40, the left/right side faces 47, 48 are opposed to the projections 41 - 44 and positioned and loaded. When the cassette 2 is loaded in error, the front cover 36 overrides upper faces 39b, 40b of the rear projections 39, 40 to be floated from the bottom plate 30 and cannot be loaded normally. Thus, mis-loading is prevented.</p> |
