Patent application number | Description | Published |
20090128772 | Discrimination Medium, Discrimination Method, and Discrimination Apparatus - An object of the present invention is to provide a discrimination medium which has high discrimination ability, and which is more difficult to counterfeit than conventional discrimination mediums. A discrimination medium comprises: a cholesteric liquid crystal layer; and a liquid crystal layer acting as a half-wave plate and provided on the cholesteric liquid crystal layer in a predetermined pattern. | 05-21-2009 |
20090162625 | Identification Medium - An identification medium provided with a laminated structure comprises laminated layers of a magnetically controllable layer, in which magnetic microcapsules are dispersed, and a color shifting layer. | 06-25-2009 |
20090242834 | IDENTIFYING MEDIUM, IDENTIFYING MEDIUM MANUFACTURING METHOD, ARTICLE, AND IDENTIFYING MEDIUM IDENTIFYING METHOD - An identifying medium comprises a nematic liquid crystal layer for forming a latent image with gradation, and the nematic liquid crystal layer has a thickness distribution corresponding to the gradation. | 10-01-2009 |
20090323066 | IDENTIFICATION MEDIUM, ARTICLE, IDENTIFICATION DEVICE, AND METHOD OF IDENTIFYING IDENTIFICATION MEDIUM - An identifying medium comprises an optical functional layer that is optically identifiable and comprises a layer containing microcapsules. The microcapsule contains a material that occurs color change by breaking the microcapsule. | 12-31-2009 |
20100015378 | TRANSPARENT PLASTIC CONTAINER FOR ANTICOUNTERFEIT SYSTEM - A transparent plastic container which is transparent, allows good design and can be used for an anticounterfeit system that determines authenticity by visual check with the use of polarization property. A transparent plastic sheet of a polystyrene-based resin having a total light transmission of 85% or higher and a haze of 7% or less is subjected to vacuum, pneumatic or vacuum/pneumatic forming at a sheet temperature ranging from a glass transition temperature plus 50 degrees C. to a glass transition temperature plus 130 degrees C., thereby obtaining a transparent plastic container having a planar portion with a strain amount of 150 nm or less. | 01-21-2010 |
20100026450 | IDENTIFICATION MEDIUM, IDENTIFICATION METHOD, AND IDENTIFICATION APPARATUS - An identification medium is to be observed via a linearly polarizing filter and includes a first liquid crystal layer that changes the wavelength of light according to the rotational angle of the linearly polarizing filter, a cholesteric liquid crystal layer, and a light absorbing layer that is provided below the cholesteric liquid crystal layer. | 02-04-2010 |
20100194092 | Discrimination Medium and Discrimination Method for Discriminating the Same - A discrimination medium on which printing can be freely performed, which cannot be easily falsified, in which the authenticity can be easily discriminated by unique appearance, and which can be produced at low cost, is provided. A cholesteric liquid crystal layer | 08-05-2010 |
20120236292 | IDENTIFICATION MEDIUM AND IDENTIFICATION METHOD THEREFOR - 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 is provided as a specific polarization light reflection layer which reflects light having a specific polarized condition. An optical anisotropic layer 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. When the identification medium is directly viewed, the influence of the optical anisotropy cannot be seen. When the identification medium is observed via a circular polarization filter, the image can be seen to have a specific color by the influence of the optical anisotropy. | 09-20-2012 |
20130099000 | IDENTIFICATION MEDIUM, METHOD FOR READING DATA THEREFROM, APPARATUS FOR IDENTIFICATION, AND METHOD AND APPARATUS FOR PRODUCTION THEREOF - A technique detects counterfeit products having appearances similar to authentic products with high accuracy. A cholesteric liquid crystal layer in which hologram is processed and circularly polarized light of primary rotating direction having specific central wavelength can be selectively reflected and a code forming layer in which code printed pattern that is an objective of reading is formed, are arranged in this order seen from a side from which reading is performed. The hologram image that inhibits reading of information of the code while an optical reading device reads it together with the code, and it is formed by the hologram processing. | 04-25-2013 |
20130105076 | METHOD AND APPARATUS FOR PRODUCTION OF IDENTIFICATION MEDIUM | 05-02-2013 |
20140022493 | IDENTIFICATION MEDIUM - In an identification medium, switching of images can be clearly observed, and the medium has a structure produced at low cost. The structure comprises a cholesteric liquid crystal layer | 01-23-2014 |
20140160540 | IDENTIFICATION MEDIUM - An identification medium cannot be reused when an attempt has been made to remove it from an object by using solvent. A cholesteric liquid crystal layer subjected to a hologram processing is formed while contacting a COP (cycloolefin polymer) layer. When the identification medium is removed using a solvent from a state in which it was adhered to an object by an adhesive layer, the COP layer is melted by the solvent and is damaged. The COP layer is a layer which functions as a substrate of the identification medium, and the identification medium is damaged by contacting with the solvent, as described above, and it is difficult to reuse. | 06-12-2014 |
20150062504 | IDENTIFICATION MEDIUM - 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. | 03-05-2015 |
20150069128 | OPTICAL READING DEVICE, OPTICAL READING METHOD, AND PROGRAM - 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 in which a right circularly polarized light filter is arranged in front of an LED, a light emitting part in which a right circularly polarized light filter is arranged in front of an LED, and a controlling part which switches light emission between the light emitting parts. | 03-12-2015 |