公开(公告)号：US10414195B2

公开(公告)日：2019-09-17

申请号：US15264170

申请日：2016-09-13

Applicant: TOPPAN PRINTING CO., LTD.

Inventor： Mihoko Okawa ,  Hideki Ochiai ,  Koji Ichikawa ,  Yuki Kotegawa

IPC: G02B5/30 ,  B42D25/364 ,  B42D25/36 ,  B42D25/41 ,  B41M3/14 ,  B42D25/378 ,  B42D25/21 ,  B42D25/382 ,  B42D25/387 ,  B42D25/23 ,  B42D25/47 ,  B42D25/391 ,  B42D25/24 ,  B42D25/29

Abstract: An anti-counterfeiting medium includes a recording medium, a polarizer layer arranged on a part of the recording medium. The polarizer layer is formed thereon with a low extinction-ratio area that forms an image portion where a polarizer exhibits an extinction ratio lower than in a portion other than the low extinction-ratio area of the polarizer layer. The recording medium is formed thereon with an image portion that is a part of the recording medium and has a nature different from that of a portion other than the part of the recording medium.

公开(公告)号：US10647148B2

公开(公告)日：2020-05-12

申请号：US16240725

申请日：2019-01-05

Applicant: TOPPAN PRINTING CO., LTD.

Inventor： Mihoko Okawa ,  Hideki Ochiai ,  Koji Ichikawa ,  Yuki Kotegawa

IPC: B42D25/364 ,  B42D25/435 ,  G02B5/30 ,  B41M3/14 ,  B42D25/41 ,  B42D25/36 ,  B42D25/378 ,  B42D25/23 ,  B42D25/47 ,  B42D25/391 ,  B42D25/24 ,  B42D25/29 ,  B42D25/21 ,  B42D25/382 ,  B42D25/387

Abstract: An anti-counterfeiting medium includes a recording medium, a polarizer layer arranged on a part of the recording medium. The polarizer layer is formed thereon with a low extinction-ratio area that forms an image portion where a polarizer exhibits an extinction ratio lower than in a portion other than the low extinction-ratio area of the polarizer layer. The recording medium is formed thereon with an image portion that is a part of the recording medium and has a nature different from that of a portion other than the part of the recording medium.