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：US10046359B2

公开(公告)日：2018-08-14

申请号：US15230743

申请日：2016-08-08

Applicant: TOPPAN PRINTING CO., LTD.

Inventor： Mihoko Okawa ,  Hideki Ochiai ,  Kota Aono ,  Yuki Kotegawa

IPC: B05D3/06 ,  G02B5/30 ,  G02F1/1337

Abstract: An oriented film includes first to fourth regions having first to fourth orientation angles. First polarized light having a first intensity is radiated onto the first and second regions of a photosensitive film. Second polarized light having a second intensity is radiated onto the second and third regions of the photosensitive film. Third polarized light having a third intensity is radiated onto the first to fourth regions of the photosensitive film. The polarization angles of the first to third polarized light are different from each other. The second polarization angle is larger than the first polarization angle. The third polarization angle is larger than the second polarization angle. The polarization angle of the second or third polarized light radiated onto the third region is less than the third alignment angle. The third intensity is lower than the first intensity and the second intensity.

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.

公开(公告)号：US10647147B2

公开(公告)日：2020-05-12

申请号：US16196180

申请日：2018-11-20

Applicant: TOPPAN PRINTING CO., LTD.

Inventor： Kozue Umeda ,  Mihoko Okawa

IPC: B42D25/328 ,  B42D25/364 ,  G09F3/02 ,  B42D5/04 ,  G09F3/00 ,  B42D25/324 ,  B42D25/373 ,  G02B5/18 ,  G02B5/30

Abstract: A anti-counterfeiting medium includes a support substrate, an OVD forming layer, and a latent image layer in this order. The latent image layer has plural regions with optical axes of a birefringent material aligned in directions different from each other. The OVD forming layer includes an uneven-structure-forming layer is made up of a first region and a second region, and a reflecting layer. The first region is a region made up of a flat part and plural convexities or concavities. The second region is configured by a flat part. Each of the plural convexities and concavities has a 0.3 to 5 μm long side dimension and short side dimension and height or depth of 0.1 to 0.5 μm or less.