| 摘要 |
<p>PURPOSE:To obtain a printed matter using only process color ink without using a special color ink in a quality as if the special color were used by a method wherein a special color film original plate is expressed by high-screen negative film plates for process color ink, and the high-screen negative film plates are each synthesized with process color film original plates. CONSTITUTION:Based on a special color film original, prate 1, a picture pattern expressed by halftone dots of the special, color film original plate 1 is expressed by halftone dots of a higher screen ruling as well as separated to process colors through a conversion process 2. I-n this manner, Y', M', C' high-screen negative film plates 3 are obtained. Next, based on Y-C film original plates 1 and the high-screen negative film plates 3, the picture pattern IS processed through a synthesizing process 4. At this time, a map part is formed by the negative-to- positive reversing exposure of the high-screen negative film plate 3 to a new film original plate 5 and the other part is formed by the negative-to-positive reversing exposure of the conventional Y-C film original plate 1 intact to the new film original plate 5, whereby the layout of the both is made on the same film. In this synthesizing process, Y''-C'' film original plates 5 are obtained.</p> |
