| 摘要 |
PURPOSE:To prevent reuse of a used film cassette in advance, by providing a hole fitting to the guide shaft of a cassette containing chamber provided in either side of a film winding part, and providing a container in the innermost part of this hole. CONSTITUTION:A fitting hole 10 is provided in parallel to a film winding shaft almost in the center of a film feeding part 3, and a container 12 for containing a misinsertion preventing member 13 is formed in the innermost part of the hole 10, that is, the upper part of a case 8, and the container 12 ahs a stepped part 12a larger in inside diameter than that of the hole 10, and the member 13 is inserted on the opening 11 of the hole 10 slidably along the inside of the hole 10. This member 13 consists of a disk-shaped main body 15, a protuberance 16, and a spring 17, and cannot be drawn out, thus permitting the used film cassette 1 not to be insertable into a cassette containing chamber 18, and to be prevented from reuse. |
