| 摘要 |
PURPOSE:To make a plate directly without making a block copy by irradiating selected character patterns on a character board with pulse laser light, one by one, and projecting its transmitted light upon a photosensitive resin plate material. CONSTITUTION:The character board 2 is driven by a PCM signal inputted to a computer 14 to select one of character patterns arrayed on the character board, and the part is irradiated with the thinly reduced laser light to set its transmitted light to the size of each type by a lens system 3. The repetition frequency of the pulse laser light is controlled by the computer 14 according to the size of the type. Simultaneously, a drum or disk 13 moves to a specific position to project the transmitted light upon the photosensitive resin plate. |
