COUNTERFEIT PREVENTION DEVICE AND PRODUCTION METHOD THEREOF

PROBLEM TO BE SOLVED: To provide a counterfeit prevention device having enhanced security, making counterfeit and imitation hard, and capable of identifying three or more printing latent images.SOLUTION: A counterfeit prevention sheet 10 comprises at least: a latent image formation layer 2; and a pr...

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Bibliographic Details
Main Author TOMONO TAKAO
Format Patent
LanguageEnglish
Japanese
Published 11.05.2015
Subjects
BOOK COVERS
BOOKBINDING
DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR
FILES
LAYERED PRODUCTS
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
LOOSE LEAVES
MOVABLE-STRIP WRITING OR READING APPARATUS
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PERFORMING OPERATIONS
PHYSICS
PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES
PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR
SPECIAL PRINTED MATTER
TRANSPORTING
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Summary:PROBLEM TO BE SOLVED: To provide a counterfeit prevention device having enhanced security, making counterfeit and imitation hard, and capable of identifying three or more printing latent images.SOLUTION: A counterfeit prevention sheet 10 comprises at least: a latent image formation layer 2; and a protection layer 3, and they are laminated on a base material 1 in the order. The latent image formation layer 2 for the counterfeit prevention sheet includes a crystal liquid layer in which plural areas having different polarization directions each other in a two-dimensional state, and the latent image formation layer 2 has three or more areas having different polarization directions. 【課題】３個以上の印刷潜像が識別可能で、模造・偽造が困難なセキュリティーを高めた偽造防止用デバイスの提供を目的とした。【解決手段】基材１上に、少なくとも潜像形成層２と、保護層３と、がこの順に積層された偽造防止用シート１０であって、前記潜像形成層２は、それぞれ偏光方向の異なる領域が二次元的に複数敷設された液晶層を含むことを特徴とする偽造防止用シートであって、前記潜像形成層２は、偏光方向の異なる領域を３つ以上有することを特徴とするものである。【選択図】図１
Bibliography:Application Number: JP20130230101