| 摘要 |
<p>PURPOSE:To prevent ill use by taking in the image of a block copy as the digital data of a layout scanner, subjecting the digital image data to arithmetic processing to form latent image data and executing film exposing with a plotter. CONSTITUTION:The block copy 2 having the image of characters or patterns which float when copied is prepd. The image of said block copy 2 is taken as the digital image data from an input scanner into a layout scanner and is subjected to the arithmetic processing by the computer of the layout scanner, by which relatively small dots 21 is formed to either the image part 20a of the image data 20 of the block copy 2 and the background part 20b exclusive of the image part 20a and straight line sleeve 22 are formed on the other. The film exposing is then executed with, for example, the laser plotter to form the film master plate. The part of the dots 21 is not reproduced and appears white and conversely, the straight line sleeve 22 part is reproduced and appears dark in color. The ill use is prevented in this way.</p> |
