| 摘要 |
PURPOSE:To prepare the negative of a plate-making film in the light room easily and rapidly by copying an original on a light room film with a copying machine, exposing it to UV rays, developing it, and removing toner to form a negative film directly. CONSTITUTION:A light room film 1 is copied with a copying machine widely used today to form a toner image 2, and this image 2 is exposed with a UV lamp 3 and developed to form a developed film 4. It is washed with water to obtain a film 5. The negative or the like of a plate-making film can be thus prepared easily and rapidly by using a copying machine now used generally in a large number without requiring a dark room and a camera. |
