| 摘要 |
PURPOSE:To enable calculation of the exact area of the photosensitive material to be processed. CONSTITUTION:The control device 72 of a controlling section 68 measures the passing time of a waterless lithographic plate from its front end to the rear end by an aluminum detector 88, and the plate length in a plate insertion direction is calculated from the passing time and a conveying speed by a driving device 186. This control device is connected with the size memory section 70 in which the average regular longitudinal sizes and average lateral sizes to longitudinal sizes of the plate have been memorized in advance, and the key board from which both actual sizes in each size high in frequency have been inputted and recorded, and the control device judges to whether longitudinal size inputted from the key board the calculated measured size corresponds, and when the corresponding longitudinal size is not found, the processing area us calculated by selecting the average lateral size recorded to the longitudinal size. |
