| 摘要 |
<p>PURPOSE:To compensate the transmission loss in a driving power transmission mechanism and to stabilize mounting against impact from the outside by detecting a mounting defect by a mounting state detecting means and normalizing the mounting by a control means. CONSTITUTION:The transmission loss of the mechanism changes to break the balance with a compression spring 12 and a main gear 10 moves in the direction reverse from F when the mechanism is applied with vibrations or impact from the outside. A cassette holder 1 is then lifted and the mounting defect of the cassette arises. A shutter 10a parts from a photosensor 13 at this time and the photosensor produces an output. A control section detects this output and starts a loading motor 5 to turn the main gear 10 in the direction F. The mounting state within the prescribed time is discriminated and whether a readjustment can be made or not is decided. The mounting of the cassette is automatically maintained in the normal state in this way and the stable mounting is executed.</p> |
