| 摘要 |
PROBLEM TO BE SOLVED: To exactly calculate processing area of a photosensitive material required for replenishment of replenished liquid by compensating difference of detecting time of the photosensitive material by a sensor due to insertion difference by a manual work of a worker. SOLUTION: An error by manual insertion to be caused in the case of calculating feed direction size is dissolved and the exact feed direction size is obtained by detecting the back end of sheet film 18 on the inserting side, detecting the head of the sheet film 18 on the ejecting side and detecting the head and the back end of the sheet film by the sensor on the inserting side by utilizing a fact that a product between the difference of the detecting time and feeding speed is shorter than feed path length from a detecting position on the inserting side to a detecting position on the ejecting side by the feed direction size of the sheet film 18.
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