| 摘要 |
PURPOSE:To stop the film winding action to avoid the idle advance of the unexposed area of a film in case a fault arises, by controlling a motor with the signal that detects the open state of a shutter mechanism and the electric signal supplied from a photoelectric converting means that receives the imaging light. CONSTITUTION:The detection signal is supplied to an input terminal of one side of an AND circuit 64 with the opening of a shutter mechanism caused by the reciprocal motion of a shutter mirror part 32. At the same time, the electric signal delivered from a photoelectric converter 58 is supplied to the other input terminal when the imaging light given from a subject exposes a film 28 to light in the open mode of the shutter mechanism. As a result, a motor control circuit 78 drives a film winding motor 38. In case both input terminals of the circuit 64 are not satisfied owing to a fault of a light source device 20 or the shutter mechanism, no drive signal is delivered from the circuit 78. As a result, the unexposed film 28 is never wound. |
