FALSIFICATION PREVENTION SHEET, AND METHOD OF DETERMINING ILLEGAL BROWSING OF CONCEALED POSTCARD USING FALSIFICATION PREVENTION SHEET

摘要

PPROBLEM TO BE SOLVED: To provide: a falsification prevention sheet capable of determining whether concealed information written by an information transmitting side is browsed illegally or not before an information confirming side checks its content; a concealed postcard using the falsification prevention sheet; and a method of determining illegal browsing of the concealed postcard. PSOLUTION: The falsification prevention sheet is formed by laminating a resin transfer layer for preventing information falsification, and an adhesive layer, sequentially, on a separation base material. The resin transfer layer to be transferred onto a transfer-receiving face together with the adhesive layer gets to incomplete transfer in a low-transfer pressure area pressed by a force of degree for bonding the adhesive layer with the transfer-receiving face, and gets to complete transfer in a high-transfer pressure area pressed by a force exceeding the low-transfer pressure. PCOPYRIGHT: (C)2010,JPO&INPIT