| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain an authenticity discriminable printed material having a gradated image applicable to a printed material consisting of complicated printing image as the design of a valuable printed material. <P>SOLUTION: This printed material has a continuous graduation pattern formed by arranging plurally two kinds of figures on a base material. The two kinds of the figures are respectively a dot pattern for continuous graduation reproducing one dot pattern made of one selected from the group consisting of a (R), a family emblem, a logo mark, a symbol mark, a letter or the like. The first figures between the two kinds of the figures form the visible continuous graduation pattern by being regularly arranged with ink including no infrared absorbing coloring matter, while its second figures form the invisible continuous graduation pattern by being regularly arranged with ink including metallic powder or with transfer sheet including metallic foil under the condition that each first figure regularly arranged is doubly arranged respondingly onto each second figure regularly arranged so as to hide each second figure by each first figure. <P>COPYRIGHT: (C)2008,JPO&INPIT |
