| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a forgery-proof form, the forgery of which is difficult and the authenticity of which is easily proved, and which can be used as a bead, valuable securities, various types of ticket or a certificate of seal impression. SOLUTION: This forgery-proof form has a specified information entry part provided on the front face and a notice information part 4 provided on the back face. In addition, the document has a microcapsule ink 5 containing a heat sensitive agent which colors by cooling to show forgery confirmation information made up of a character, a mark or a pattern, printed on the notice information 4 entry part provided on the back face.</p> |
