| 摘要 |
PURPOSE:To perform an economical plate making without reducing a durability to a plate making with a plate making machine, by taking a photography of a master having different plate hangings in a longitudinal and a transverse directions to a photosensitive lithographic plate having equal sizes in the longitu dinal and the transverse directions and having the same paper making direction. CONSTITUTION:The photosensitive lithographic plate of a substrate having a water-resisting property such as a polyethylene coated paper is carried out to the photographic part, and is taken the photography on the plate by the photographic light coming from an original hanging followed by developing and lithographying. When developing the plate, the original master 1 having the prescribed size is carried out in the paper making direction of the litho graphic platen 2, and makes the photography of the predescribed master 1 so as to be the platens 2 having the equal length in each side, even if the widths A and A' of trnasferring the master are different each other. Therefore, as the master may be hanged in the longitudinal and the transverse directions by one of the plate making machine, the master can be carried out the plate making, without reducing the durability to the plate making of the master. |
