公开(公告)号：EP2246199B1

公开(公告)日：2018-05-30

申请号：EP08871585.9

申请日：2008-11-14

Applicant: NHK Spring Co., Ltd.

Inventor： HOSHINO, Hidekazu ,  SAKAUCHI, Tokio ,  SASAKI, Mutsumi ,  IDA, Tohru ,  IIDA, Naomi

IPC: B42D25/00 ,  G03H1/22

CPC classification number: G03H1/0011 ,  B42D25/328 ,  B42D25/364 ,  B42D25/391 ,  B42D25/45 ,  B42D2033/26 ,  G03H1/02 ,  G03H1/0244 ,  G03H1/0252 ,  G03H1/0272 ,  G03H2250/38 ,  G03H2250/40 ,  G03H2250/41

Abstract: A discrimination medium, which can have much information, can be produced on a small scale at low cost, and enables change of a sticker design at low cost, is provided. A cholesteric liquid crystal layer 302, having a fine asperity for forming a hologram, is formed on a transparent first substrate 301. A print layer 305 composed of a black ink is formed on a transparent second substrate 304. The substrates are affixed to each other via a bond layer 308, so that a discrimination medium 310 is obtained. In the discrimination medium 310, the display content obtained by the print layer is changed, so that the display content for discrimination can be changed at low cost.

公开(公告)号：EP2506065A1

公开(公告)日：2012-10-03

申请号：EP10833089.5

申请日：2010-11-12

Applicant: Nhk Spring Co., Ltd.

Inventor： HOSHINO, Hidekazu ,  TAKEUCHI, Itsuo ,  SAKAUCHI, Tokio ,  SHIBUYA, Seiya ,  IDA, Tohru

IPC: G02F1/13 ,  B42D15/10 ,  G02F1/13363

CPC classification number: B42D25/364 ,  B42D25/29 ,  B42D25/328 ,  B42D25/391 ,  B42D2033/10 ,  B42D2033/26 ,  B42D2035/24 ,  G02B5/3016 ,  G03H1/0244 ,  G03H1/0256 ,  G03H2250/14 ,  G03H2250/36 ,  G03H2250/38

Abstract: An identification medium is provided in which latent image having plural colors can be observed even when the identification medium is spaced away from a polarization filter.
A cholesteric liquid crystal layer 102 is provided as a specific polarization light reflection layer which reflects light having a specific polarized condition. An optical anisotropic layer 106 having an optical anisotropy is provided at an upper position overlapping with the specific polarization light reflection layer. An image A formed by an area having an optical anisotropy different from that of surroundings is formed at the optical anisotropic layer 106. When the identification medium 100 is directly viewed, the influence of the optical anisotropy cannot be seen. When the identification medium 100 is observed via a circular polarization filter, the image A can be seen to have a specific color by the influence of the optical anisotropy.

公开(公告)号：EP2840417A1

公开(公告)日：2015-02-25

申请号：EP13778310.6

申请日：2013-03-11

Applicant: NHK Spring Co.,Ltd.

Inventor： HOSHINO, Hidekazu ,  TAKEUCHI, Itsuo ,  YOSHIDA, Shinsuke ,  SHIBUYA, Seiya ,  IDA, Tohru ,  OKUBO, Syuhei

IPC: G02B5/30 ,  B42D15/10 ,  G02B5/32

CPC classification number: G06K7/1094 ,  B42D25/29 ,  B42D25/328 ,  B42D25/364 ,  B42D2033/26 ,  G02B27/021 ,  G03H1/0011

Abstract: An optical reading device authenticates an identification medium with cholesteric liquid crystal layer, having a structure in which no movable parts are necessary for switching circular circularly polarized light filter. The optical reading device reads an image from an identification medium having a cholesteric liquid crystal layer having a hologram processed, and an ink printed pattern layer in this order, and the device includes a light emitting part 12 in which a right circularly polarized light filter 14 is arranged in front of an LED 20, a light emitting part 13 in which a right circularly polarized light filter 17 is arranged in front of an LED 21, and a controlling part 26 which switches light emission between the light emitting parts 12 and 13.

公开(公告)号：EP2838076A1

公开(公告)日：2015-02-18

申请号：EP13776181.3

申请日：2013-03-14

Applicant: Nhk Spring Co., Ltd.

Inventor： HOSHINO, Hidekazu ,  TAKEUCHI, Itsuo ,  IDA, Tohru ,  SHIBUYA, Seiya

IPC: G09F3/02 ,  G03H1/18 ,  G09F3/14

CPC classification number: B42D25/328 ,  A41D27/085 ,  B42D25/324 ,  B42D25/364 ,  B42D25/425 ,  G02F1/0045 ,  G02F1/133305 ,  G02F1/133528 ,  G02F2001/133541 ,  G03H1/00 ,  G03H1/0011 ,  G03H1/0244 ,  G03H1/0252 ,  G03H1/0272 ,  G03H2222/31 ,  G03H2250/14 ,  G03H2250/34 ,  G03H2250/38 ,  G03H2250/40 ,  G03H2250/41 ,  G03H2270/12 ,  G03H2270/31 ,  G09F3/02 ,  G09F3/14 ,  G09F2003/0276 ,  G09F2003/0282

Abstract: An identification medium can be affixed to cloth or leather products by sewing. A cholesteric liquid crystal layer on which an embossed surface for forming a hologram is formed, is sandwiched between a first supporting member and a second supporting member. A mounting region that can be affixed to clothing, etc., by sewing, is formed.

Abstract translation: 识别介质可以通过缝纫固定在布料或皮革制品上。 其上形成用于形成全息图的压花表面的胆甾型液晶层夹在第一支撑构件和第二支撑构件之间。 通过缝制形成可以固定到衣服等上的安装区域。

公开(公告)号：EP2977935B1

公开(公告)日：2019-05-22

申请号：EP14769655.3

申请日：2014-03-12

Applicant: NHK Spring Co., Ltd.

Inventor： HOSHINO, Hidekazu ,  TAKEUCHI, Itsuo ,  SHIBUYA, Seiya ,  IDA, Tohru

IPC: G06K19/10 ,  G06K19/06 ,  B42D25/364 ,  B42D25/382 ,  G06K7/12 ,  G06K17/00 ,  G02B5/30 ,  G02B5/32 ,  G06K19/16 ,  G07D7/00 ,  B42D25/328 ,  B41M3/14

公开(公告)号：EP2590032B8

公开(公告)日：2018-04-18

申请号：EP11800903.4

申请日：2011-06-29

Applicant: NHK Spring Co., Ltd.

Inventor： HOSHINO, Hidekazu ,  TAKEUCHI, Itsuo ,  SAKAUCHI, Tokio ,  IDA, Tohru

IPC: B42D25/328 ,  B42D25/364 ,  G02B5/30 ,  B32B38/00 ,  G03H1/00 ,  G03H1/02 ,  G02B27/28 ,  G06K7/10 ,  G06K19/06 ,  G03H1/22 ,  B42D25/00

CPC classification number: B42D25/328 ,  B32B38/145 ,  B42D25/364 ,  G02B5/3016 ,  G02B5/3041 ,  G02B27/286 ,  G03H1/0011 ,  G03H1/02 ,  G03H1/0252 ,  G03H1/0256 ,  G03H2001/2276 ,  G03H2250/38 ,  G03H2250/40 ,  G03H2250/41 ,  G06K7/10 ,  G06K19/06065

Abstract: A method for production of the identification medium is provided, in which a counterfeit product having similar appearance as that of an authentic one can be easily detected and in which the code can be read with high accuracy. The method for production of an identification medium, contains a forming step in which a code printed pattern 107 is formed by printing; and a joining step in which the code printed pattern 107 and a cholesteric liquid crystal layer 102 are joined; wherein the identification medium comprises, in order, seen from an observing side: a cholesteric liquid crystal layer 102, in which a hologram is processed and right circularly polarized light is reflected; a circularly polarizing filter layer 106 having a structure formed by laminating a »/4 plate and a linearly polarizing filter from the observing side, in which left circularly polarized light selectively penetrates toward the cholesteric liquid crystal layer 102 when natural light enters from the opposite side to the cholesteric liquid crystal layer side 102; and a code printed pattern 107, in which a two-dimensional codes is formed.

公开(公告)号：EP2530498B1

公开(公告)日：2018-03-28

申请号：EP10844676.6

申请日：2010-11-08

Applicant: NHK Spring Co., Ltd.

Inventor： IDA, Tohru

IPC: B42D25/391 ,  B42D25/328 ,  B42D25/364 ,  B42D25/373 ,  G02B5/30 ,  G03H1/02

CPC classification number: B42D25/364 ,  B42D25/328 ,  B42D25/373 ,  B42D25/391 ,  G02B5/3016 ,  G03H1/0244 ,  G03H1/0256 ,  G03H2250/14 ,  G03H2250/36 ,  G03H2250/38

Abstract: An identification medium, in which a pattern is clearly altered in observation through a right-handed circularly polarizing filter and observation through a left-handed circularly polarizing filter, is provided. The identification medium is formed by laminating a cholesteric liquid crystal layer 101, a »/4 plate 102, and a linearly polarizing filter layer 103, in that order, from an observing side. The cholesteric liquid crystal layer 101 is formed with a hologram and selectively reflects light. In an observation through a circularly polarizing filter that transmits the light reflected at the cholesteric liquid crystal layer 101, light reflected at a pattern printed layer 105 is not perceived due to the function of a circularly polarizing layer 104. Images are clearly altered by switching a right-handed and a left-handed circularly polarizing filter.

公开(公告)号：EP2246199A1

公开(公告)日：2010-11-03

申请号：EP08871585.9

申请日：2008-11-14

Applicant: Nhk Spring Co., Ltd.

Inventor： HOSHINO, Hidekazu ,  SAKAUCHI, Tokio ,  SASAKI, Mutsumi ,  IDA, Tohru ,  IIDA, Naomi

IPC: B42D15/10 ,  G03H1/22

CPC classification number: G03H1/0011 ,  B42D25/328 ,  B42D25/364 ,  B42D25/391 ,  B42D25/45 ,  B42D2033/26 ,  G03H1/02 ,  G03H1/0244 ,  G03H1/0252 ,  G03H1/0272 ,  G03H2250/38 ,  G03H2250/40 ,  G03H2250/41

Abstract: A discrimination medium, which can have much information, can be produced on a small scale at low cost, and enables change of a sticker design at low cost, is provided. A cholesteric liquid crystal layer 302, having a fine asperity for forming a hologram, is formed on a transparent first substrate 301. A print layer 305 composed of a black ink is formed on a transparent second substrate 304. The substrates are affixed to each other via a bond layer 308, so that a discrimination medium 310 is obtained. In the discrimination medium 310, the display content obtained by the print layer is changed, so that the display content for discrimination can be changed at low cost.

Abstract translation: 可以以低成本小规模生产可以具有大量信息的歧视媒体，并且能够以低成本改变贴纸设计。 在透明第一基板301上形成具有用于形成全息图的微细凹凸的胆甾醇型液晶层302.在透明第二基板304上形成由黑色墨水构成的印刷层305.将基板彼此固定 通过接合层308，从而获得识别介质310。 在识别介质310中，改变由打印层获得的显示内容，从而可以以低成本改变用于辨别的显示内容。

公开(公告)号：EP2977935A1

公开(公告)日：2016-01-27

申请号：EP14769655.3

申请日：2014-03-12

Applicant: Nhk Spring Co., Ltd.

Inventor： HOSHINO, Hidekazu ,  TAKEUCHI, Itsuo ,  SHIBUYA, Seiya ,  IDA, Tohru

IPC: G06K19/10 ,  G06K19/06 ,  B42D25/364 ,  B42D25/382 ,  G06K7/12 ,  G06K17/00 ,  G02B5/30 ,  G02B5/32

CPC classification number: B42D25/364 ,  B41M3/14 ,  B42D25/328 ,  B42D25/382 ,  G02B5/30 ,  G06K7/12 ,  G06K17/00 ,  G06K19/06 ,  G06K19/10 ,  G06K19/16 ,  G07D7/00

Abstract: An identification medium can be used to determine whether or not a code is authentic when a structure displaying the code is visually observed, and which can also be superior in cost, reliability and durability. The identification medium has a structure including a cholesteric liquid crystal layer 103 which selectively reflects circularly polarized light of a first wavelength in a visible light band, and in which a processed hologram 104 is formed, and a code printed layer 102 in which code information is printed by an ink that absorbs or reflects infrared rays at a wavelength that is different from the first wavelength, in which a region in which the processed hologram 104 is formed and a region 102a in which the ink is printed on the code printed layer 102, are located so as to be at least partially overlapped when they are viewed from the side of observation.

Abstract translation: 当可视地观察显示代码的结构时，可以使用识别介质来确定代码是否可信，并且还可以在成本，可靠性和耐久性方面更好。 识别介质具有包括胆甾型液晶层103的结构，该胆甾醇型液晶层103选择性地反射可见光波段中的第一波长的圆偏振光，并且其中形成经处理的全息图104;以及代码信息为 通过墨水印刷，其中以与形成有经处理的全息图104的区域不同的第一波长的波长吸收或反射红外线，以及在代码印刷层102上印刷墨水的区域102a， 位于从观察侧观察时至少部分重叠。

公开(公告)号：EP2506065B1

公开(公告)日：2015-04-29

申请号：EP10833089.5

申请日：2010-11-12

Applicant: NHK Spring Co., Ltd.

Inventor： HOSHINO, Hidekazu ,  TAKEUCHI, Itsuo ,  SAKAUCHI, Tokio ,  SHIBUYA, Seiya ,  IDA, Tohru

IPC: G02F1/13 ,  G02F1/13363 ,  B42D15/00 ,  G02B5/30 ,  G03H1/02

CPC classification number: B42D25/364 ,  B42D25/29 ,  B42D25/328 ,  B42D25/391 ,  B42D2033/10 ,  B42D2033/26 ,  B42D2035/24 ,  G02B5/3016 ,  G03H1/0244 ,  G03H1/0256 ,  G03H2250/14 ,  G03H2250/36 ,  G03H2250/38