| 摘要 |
PURPOSE: To obtain an image recorder where a photosensitive material is prevented from being needlessly exposed even when it passes an exposure part other than the exposing time with a simple structure at a low cost and which is simplified. CONSTITUTION: A diaphragm mechanism part 100 is arranged in the lens unit 44 of the image recorder. In the diaphragm mechanism part 100, the substantial areas of apertures 188 and 190 are increased/decreased by moving a pair of diaphragm plates 184 and 186. Furthermore, by moving them to the maximum, the apertures 188 and 190 are totally closed. Therefore, a shutter plate and a mechanism such as an actuator for the shutter plate need not be provided near the exposure part as in the conventional manner, and the device is simplified as a whole at a low cost. |
