| 摘要 |
PURPOSE:To easily and exactly form 2 wiring pattern diagrams corresponding to each color from an original wiring pattern diagram expressed in 2 colors, by using 2 kinds of photosensitive films having different photosensitive wavelength regions. CONSTITUTION:Two kinds of patterns are separated from a wiring pattern diagram expressed in 2 colors (diagram A) having a lateral red pattern (diagram B) and a longitudinal blue pattern (diagram C) drawn on the same paper, and lateral and longitudinal thin continuous lines are graph paper lines. (i) An orthochromatic photosensitive film 1 having a 350-600nm photosensitive wavelength region is placed under the diagram A, and white light is projected in the arrow direction to react a part of the film 1 except that corresponding to the red pattern R and the black pattern BL (hatched parts, and a signal B expresses the blue pattern), and then, the film 1 is reversely printed on a positive film 2 to form a red and black pattern. A blue and black pattern is formed by using a panchromatic photosensitive film 3 having a 350-650nm photosensitive wavelength region, and a light filtered through a red film 4. |
