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Kan't Kopy paper : ウィキペディア英語版 | Kan't Kopy paper
Kan't Kopy safety paper is a type of security paper printed with a moiré pattern in order to resist counterfeiting original documents. It has an embedded mark making copying obvious, as a side effect deterring further copying. ==How it works== When photocopied or scanned, KK paper produces a repeated pattern of either the word "VOID" or the word "COPY" on the copies. The paper comes in red, blue, and green. The illusion of the ''VOID'' pattern is created by line segments intersecting at various angles.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Kan't Kopy paper」の詳細全文を読む
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