| 摘要 |
A computer readable medium which stores a tint block image generation program that causes a computer to execute a tint block image generation step of generating tint block image data having a latent image portion and a background portion, which have different output densities to be reproduced during copying has: an adjustment step of adjusting grayscale values of multi-grayscale camouflage pattern data to a lower lightness so as to generate adjusted multi-grayscale camouflage pattern data; and a tint block image data generation step of generating latent image portion image data based on a latent image portion screen for an area corresponding to the latent image portion, and generating background portion image data based on a background portion screen for an area corresponding to the background portion, for grayscale values of the adjusted multi-grayscale camouflage pattern data.
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