| 摘要 |
<p>PURPOSE:To obtain printed matter, which is hard to be fabricated and falsified, by a method wherein printing elements consisting of various parallel lines are formed in intaglio printing with colorless, transparent ink under changed angle on or beneath printing elements consisting of various parallel lines formed in offset printing. CONSTITUTION:After printing elements consisting of parallel straight lines 1 are formed in offset printing with colored ink and fully dried, printing elements consisting of parallel straight lines 2, which are slightly inclined to the parallel straight lines 1, are formed in intaglio printing with colorless, transparent ink. When the of obtained printed matter 3 is seen frontally, only the parallel straight lines 1 printed with the colored ink can be seen. When the matter 3 is seen obliquely, moire 4 emerges. On the contrary, when printing elements consisting of straight lines 1 are formed in offset printing with colored ink under the condition being slightly inclined to parallel straight lines 2 after the printing elements consisting of the parallel straight lines 2 are formed in intaglio printing with colorless, transparent ink, only the colored printing elements or straight lines 1 are seen under the condition that the obtained printed matter 3 is seen frontally, while moire 4 emerges under the condition that the matter is seen obliquely.</p> |
