公开(公告)号：EP3738784A1

公开(公告)日：2020-11-18

申请号：EP19739127.9

申请日：2019-01-09

Applicant: Toppan Printing Co., Ltd.

Inventor： MINAMIKAWA, Naoki

IPC: B42D25/324 ,  B32B7/06 ,  B42D25/23 ,  B42D25/24 ,  B42D25/328 ,  B42D25/455 ,  B42D25/46 ,  G02B5/18

Abstract: A laminate includes a recording layer, a translucent front covering layer and a security foil laminated between the recording layer and the front covering layer and sealed in the laminate. The security foil has a thickness that is 1/5 or less the thickness of the recording layer to prevent or reduce falsification reusing the security foil. The security foil includes a relief layer having a relief surface and a protective layer covering the relief surface. In the thickness direction of the laminate, the protective layer adheres to the recording layer and the relief layer adheres to the front covering layer. The adhesion strength between the security foil and the recording layer is higher than the adhesion strength between the security foil and the front covering layer.

公开(公告)号：EP3633422A1

公开(公告)日：2020-04-08

申请号：EP18806288.9

申请日：2018-05-22

Applicant: Toppan Printing Co., Ltd.

Inventor： MINOWA, Kazuyo ,  MINAMIKAWA, Naoki

IPC: G02B5/18 ,  B42D25/328

Abstract: An individual certificate medium includes an optical security patch in which a relief layer and a metal layer include a first area and a second area. The first area includes an altered region and a portion of the relief layer overlapping with the altered region as viewed in the thickness direction of a recording layer. The second area includes a non-altered region and another portion of the relief layer overlapping with the non-altered region as viewed in the thickness direction. As viewed in the thickness direction, the first area transmits light incident thereon, while the second area absorbs light incident thereon to hide a recording region. In a direction intersecting the thickness direction, the first and second areas cause light incident on the optical security patch to emerge as diffracted light.

公开(公告)号：EP2192428A1

公开(公告)日：2010-06-02

申请号：EP08831573.4

申请日：2008-09-19

Applicant: Toppan Printing Co., Ltd.

Inventor： YASHIKI, Kazuhiro ,  SHINDOU, Naoaki ,  ITOU, Noriyuki ,  IDE, Hidetaka ,  MINAMIKAWA, Naoki

IPC: G02B5/18 ,  B42D15/10 ,  G09F3/02

CPC classification number: G02B5/128 ,  B42D25/29 ,  B42D25/324 ,  B42D25/328 ,  B42D2033/04 ,  B42D2033/18 ,  B42D2035/24 ,  G02B3/0068

Abstract: A special visual effect is achieved. An optical device (1) includes a light-reflecting interface provided with a first relief structure including first recesses or protrusions arranged two-dimensionally, the first relief structure emitting a first diffracted light when illuminated with a light, and a light-transmitting interface disposed in front of the light-reflecting interface and having a reflectance smaller than that of the first interface, the light-transmitting interface being provided with a second relief structure including second recesses or protrusions arranged two-dimensionally, and the second relief structure emitting a second diffracted light when illuminated with the light.

Abstract translation: 实现了特殊的视觉效果。 光学装置（1）包括具有第一凸起结构的光反射界面，所述第一凸起结构包括二维布置的第一凹部或突出部，当用光照射时发射第一衍射光的第一凹凸结构和布置的透光界面 在光反射界面的前面，反射率小于第一界面的反射率，透光界面设置有包括二维布置的第二凹陷或凸起的第二凸起结构，而第二凹凸结构发射第二凹槽 用光照射时的衍射光。

公开(公告)号：EP3444645A1

公开(公告)日：2019-02-20

申请号：EP17782498.4

申请日：2017-04-14

Applicant: Toppan Printing Co., Ltd.

Inventor： MINAMIKAWA, Naoki

IPC: G02B5/18 ,  B23K26/00 ,  B32B7/02 ,  B42D25/328 ,  B42D25/45

Abstract: A laminate includes: a diffraction layer that is optically transmissive and includes a diffraction part configured by a plurality of diffraction units, the plurality of diffraction units being repetition of a diffraction unit in a direction of extending the diffraction layer, each diffraction unit including at least one diffraction element configured by a reflective diffraction grating; and an absorption layer that is optically transmissive and includes a plurality of absorption parts that absorb at least part of visible light, the absorption layer facing the diffraction layer in a state where light passes between the diffraction layer and the absorption layer. In the laminate, the laminate has an observation side that is opposite to a side where the diffraction layer faces the absorption layer; the diffraction layer has a surface serving as a front surface on a side opposite to the surface facing the absorption layer; and in plan view perpendicular to the front surface of the diffraction layer, each of the absorption parts aligns with corresponding one of the diffraction elements.

公开(公告)号：EP3570079A1

公开(公告)日：2019-11-20

申请号：EP18739439.0

申请日：2018-01-11

Applicant: Toppan Printing Co., Ltd.

Inventor： YOSHIMURA, Mai ,  SAKAI, Kyoko ,  ICHIHARA, Yoko ,  KAWASHITA, Masashi ,  MINAMIKAWA, Naoki

IPC: G02B5/18 ,  B32B3/30 ,  B32B7/02 ,  G02B5/28

Abstract: A color developing structure comprises an uneven layer having an uneven structure on a surface thereof, a multilayer film layer positioned on the uneven structure and having a surface shape that follows the uneven structure, and a protective layer covering the surface of the multilayer film layer. Projections that constitute the uneven structure have a shape with one or more steps, a pattern constituted from projected images of the projections in a virtual plane on which the uneven structure is projected in the thickness direction of the uneven layer includes a pattern comprising a set of a plurality of rectangles in which a length along a second direction is equal to or greater than a length along a first direction, the length of the rectangles along the first direction is equal to or less than sub-wavelength, and in the plurality of rectangles, the standard deviation of the length along the second direction is greater than the standard deviation of the length along the first direction.

公开(公告)号：EP3246735A1

公开(公告)日：2017-11-22

申请号：EP16737431.3

申请日：2016-01-14

Applicant: Toppan Printing Co., Ltd.

Inventor： MINAMIKAWA, Naoki

IPC: G02B5/18 ,  B42D25/328 ,  G03H1/02

CPC classification number: G02B5/1876 ,  B42D25/328 ,  G01N21/898 ,  G01N2021/8438 ,  G01N2021/869 ,  G02B5/008 ,  G02B5/085 ,  G02B5/18 ,  G03H1/02

Abstract: An optical element includes a conversion layer and a metal piece layer. The conversion layer is provided with a light-incidence surface including an uneven surface, the conversion layer being configured to receive light incident on the uneven surface and output the light from the uneven surface as light in a different state than the incident light. The metal piece layer is configured by a plurality of metal pieces to cover at least part of the uneven surface.

Abstract translation: 光学元件包括转换层和金属片层。 转换层设置有包括不平坦表面的光入射表面，转换层被配置为接收入射在不平坦表面上的光并且以与入射光不同的状态将来自不平坦表面的光作为光输出。 金属片层由多个金属片构成，以覆盖不平坦表面的至少一部分。

公开(公告)号：EP3006225A1

公开(公告)日：2016-04-13

申请号：EP14803805.2

申请日：2014-05-30

Applicant: Toppan Printing Co., Ltd.

Inventor： HARADA, Satoshi ,  YASHIKI, Kazuhiro ,  MINAMIKAWA, Naoki

IPC: B44C1/17 ,  B32B3/30 ,  B41F19/02 ,  B41M3/12

CPC classification number: B32B37/025 ,  B32B3/30 ,  B32B7/12 ,  B32B9/00 ,  B32B2307/75 ,  B32B2551/00 ,  B44C1/17

Abstract: An object of the present invention is to provide a laminated transfer medium (1) that can manufacture a printed matter or the like which includes a fine relief structure with a high non-defective rate. The laminated transfer medium can form a transfer laminate which contains a fine relief structure section having a fine relief shape onto a transfer target by using a hot stamp, and characterized in that the laminated transfer medium includes a carrier base (2), a bonding layer (3) formed on the carrier base, a fine relief structure section (4) having a fine relief shape being disposed on the bonding layer, and an adhesive layer (6) formed on the fine relief structure section, wherein the fine relief structure section is made up of separate discrete pieces positioned to be contained in area to be transferred by using the hot stamp.

公开(公告)号：EP3978245A1

公开(公告)日：2022-04-06

申请号：EP21208141.8

申请日：2017-01-26

Applicant: Toppan Printing Co., Ltd.

Inventor： MINAMIKAWA, Naoki

IPC: B32B27/36 ,  B32B37/02 ,  B42D25/23 ,  B42D25/24 ,  B42D25/328 ,  B42D25/40 ,  B44C1/17

Abstract: A laminate includes a transfer layer and a polycarbonate layer. The transfer layer has a plurality of layers including a transparent reflection layer. The transparent reflection layer is a visible light refractive index of greater than or equal to 2.0. In a plan view of a plane in which the transfer layer extends, the transparent reflection layer is located in a part of the transfer layer. At least a part of the transparent reflection layer is located inside an outline of the transfer layer. A portion of the transfer layer that is nil of the transparent reflection layer is a visible light refractive index of between 1.4 and 1.8 inclusive. The polycarbonate layer encloses the transfer layer. A cross section in a thickness direction of the laminate includes a first cross section that is nil of the transfer layer, a second cross section including the portion of the transfer layer that is nil of the transparent reflection layer, and a third cross section including a portion of the transfer layer that includes the transparent reflection layer.

公开(公告)号：EP3632698A1

公开(公告)日：2020-04-08

申请号：EP18806501.5

申请日：2018-05-25

Applicant: Toppan Printing Co., Ltd.

Inventor： IDE, Hidetaka ,  MINAMIKAWA, Naoki

IPC: B42D25/328 ,  B42D25/435 ,  G02B5/18 ,  G09F3/02

Abstract: An information recording medium (10a) formed by laminating a transparent protective layer (40) and a base material (20) having laser color-developing properties is provided. The information recording medium (10a) includes an intermediate layer (30) that is disposed between the transparent protective layer (40) and the base material (20). In the information recording medium (10a), the intermediate layer (30) includes a diffraction structure layer (32) that has a diffraction structure, and a first reflective layer (36) that reflects visible light and is destroyed when irradiated with a laser beam. Light, when incident from a transparent protective layer (40) side, causes a diffracted light pattern to appear in the diffraction structure layer (32) so as to be observable from the transparent protective layer (40) side. A laser beam, when applied from the transparent protective layer (40) side, passes through the diffraction structure layer (32), destroys the first reflective layer (36), and develops color in the base material (20).

公开(公告)号：EP3527405A1

公开(公告)日：2019-08-21

申请号：EP17860615.8

申请日：2017-10-12

Applicant: Toppan Printing Co., Ltd.

Inventor： MINAMIKAWA, Naoki

IPC: B44C1/17 ,  B32B27/00 ,  B42D25/40 ,  B42D25/45 ,  G02B5/18

Abstract: A transfer foil comprises a film-like substrate, and a layered transfer body having a pair of opposing surfaces and having an adhesion layer. A first surface of the pair of opposing surfaces is in contact with the substrate so as to be peelable from the substrate, and the adhesion layer is provided so as to include a second surface of the pair of opposing surfaces. The adhesion layer is a composite, and comprises a plurality of resin particles respectively comprising a first resin, and a layered base material comprising a second resin and filling gaps between the resin particles. The melting point of the second resin is lower than the melting point of the first resin. The transfer foil uses an adhesion layer of a composite of two incompatible resins that have different characteristics, such as melting point and crystallinity; therefore, the transfer foil maintains resistance to heat and pressure, and makes it possible to increase the accuracy of the outline shape of a layer formed by transfer on a transfer-receiving body.