| 摘要 |
PCT No. PCT/FR90/00808 Sec. 371 Date May 7, 1992 Sec. 102(e) Date May 7, 1992 PCT Filed Nov. 13, 1990 PCT Pub. No. WO91/07285 PCT Pub. Date May 30, 1991.The invention concerns an imprintable, flexible, synthetic support bearing at least one authentication or security mark. This support comprises: a substrate of synthetic material at least one mark on at least one face of the support and consisting of at least one layer of a composition altering the substrate opacity, at least one layer of an imprintable pigment composition deposited on the face bearing the mark and optionally also on the substrate face without the mark, the mark being barely or not at all visible in reflected light and perfectly visible in transmitted light. Application to the security of synthetic paper.
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