| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To easily and inexpensively form embedded information with a high degree of freedom of a form, a forming position, etc., in terms of an information forming medium wherein prescribed information is formed in advance. <P>SOLUTION: A plurality of pieces 12 and 13 of paper are unseparably bonded together with a pressure sensitive adhesive 14 so as to be turned into a laminate; the embedded information 15 is formed in a prescribed part between prescribed lamination layers by using printing ink; and the thickness (D2) of the pieces 12 and 13 of paper, abutting on each other in the part wherein the embedded information 15 is to be formed, is made smaller than the thickness D1 of the other parts by pressurization for the formation of the laminate. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
