| 摘要 |
PURPOSE:To provide a fraudproof latent image-patterned material difficult in forgery or falsification and easy to distinguish the truth from the false by utilizing a rugged-surface material in combination with a printing image of a color except for the color of the material and a colorless transparent color and to provide its production method. CONSTITUTION:A material having a rugged-surface composed of various kinds of universal line patterns, relief patterns or both the patterns is utilized in combination with various kinds of universal line printing images, dot printing images or both the printing images respectively having a color except for the color of the material and a colorless transparent color and printed leaving a prescribed space. Thereby, the objective latent image-patterned material capable of recognizing a specified letter, image, etc., only when observed from a specified direction can be obtained. This latent image-patterned material is one of these inventions and its production method is another invention in this patent. |
