| 摘要 |
PROBLEM TO BE SOLVED: To provide a film amount detector which can easily set the position for detecting film amount regardless of processing accuracy in a member or any factor during fabrication adjustment to accurately detect remaining or consumed amount of film. SOLUTION: The detector is provided with an operation part moving an opaque detection sensor 15 along the end face of a role film 1 through drive of a motor 4 to calculate the distance of the detection sensor 15 by using a controller, as well as calculating remaining or consumed amount of the film based on the presence of the film detected by the detection sensor 15. |
