TINT BLOCK IMAGE GENERATING PROGRAM, METHOD, AND APPARATUS

摘要

PROBLEM TO BE SOLVED: To enhance the concealability of a latent image in the original and the discrimination of a latent image in a copy by improving the output density of a tint block image. SOLUTION: The tint block image generating program generates a tint block image data for forming a tint block image containing a latent image section to be reproduced in copying and a background section where output density decreases in copying on a print medium. The program has a latent image section generating process for generating data of a plurality of first dots D1 on the latent image section LI and a background section generating process for generating data of a plurality of second dots D2 having the number of second dot lines and data of a plurality of third dots D3 arranged dispersedly among the second dots and having the size smaller than that of the second dot on the background section BI. COPYRIGHT: (C)2009,JPO&INPIT