| 摘要 |
PURPOSE:To manage with one driving source for feeding photogrphic paper and to make a device small-sized and simple by detecting the front edge of photographic paper by a sensor and separating a clutch which couples a driving shaft with a roll, and engaging a link when photographic paper in a stocker surpasses an upper limit. CONSTITUTION:Roll photographic paper 2 printed at a printing part 3 is fed intermittently by the driving roll 5 at intervals of printing operation and when its front end is detected by the sensor 13, the driving shaft 10 and a development feed driving roll 11 are released from engagement by the clutch 12 to stop the paper feeding to a processor B. When the stock amount of the photographic paper 2a in the stocker 7 exceeds the specific upper limit, the engagement by the clutch 12 is released and the photographic paper 2 is fed to the processor B at a constant speed. Further, when the stock amount decreases below a lower limit, the photographic paper 2 is tensed to cause trouble in the printing operation, so it is cut by a cutter 2. Therefore, one driving source for feeding the photographic paper is enough and the device is simplified. |
