| 摘要 |
PURPOSE:To shorten the time of an exposing process by allowing an original film to standby on a plate material mounting board before a plate material is carried onto the plate material mounting board. CONSTITUTION:When a machine plate for offset lithography, relief printing, etc., is made, a carriage 9 mounting plate materials 10 is put in a plate material supply part 2, and while a slip sheet is discharged into a slip sheet receiving box 5, plate materials 10 are moved onto a conveyor belt 25 successively from the top and conveyed toward an exposure part 4. Simultaneously, an original film is taken out of a cassette while held by a chucking device 33 and drawn out onto the plate material mounting board 28. Then, the chucking device 33 is lowered to reset the holding state, and the original film stands on the plate material mounting board 28 until a plate material 10 is carried in. A plate material supply roller 37 carries the plate material 10 in and positions it on the plate material mounting board 28, and the original film is superposed upon the top surface of the plate material 10 to perform exposure in said state. |
