| 摘要 |
<p>PROBLEM TO BE SOLVED: To detect that all the cassettes are normally loaded to a cassette loading part by one light projecting and receiving sensor. SOLUTION: A light projecting and receiving sensor 77 allows a light axis 76 to pass along the arraying direction of the cassettes 4 and detects that all the cassettes 4 are normally loaded in the state of allowing the light axis 76 to pass. Corresponding to the loading position of each cassette 4 at the cassette loading part 3, cassette detecting members 81 are provided respectively independently. At the time of abnormally loading the cassette 4, the member 81 is moved to a position light-shielding the light axis 76 of the sensor 77 and push- moved by the normal loading of the cassette 4 to be moved to a position allowing the light axis 76 of the sensor 77 to pass. When the light axis 76 of the sensor 77 is in a light-shielding state, even one cassette 4 is detected to be abnormally loaded. When the light axis 76 of the sensor 77 passes, it is detected that all the cassettes 4 are normally loaded.</p> |
