Invention Grant
- Patent Title: Discrimination medium and production method therefor
- Patent Title (中): 歧视媒介及其制作方法
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Application No.: US13838808Application Date: 2013-03-15
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Publication No.: US08749750B2Publication Date: 2014-06-10
- Inventor: Hidekazu Hoshino , Tokio Sakauchi , Mutsumi Sasaki , Tohru Ida , Naomi Iida
- Applicant: NHK Spring Co., Ltd.
- Applicant Address: JP Yokohama
- Assignee: NHK Spring Co., Ltd.
- Current Assignee: NHK Spring Co., Ltd.
- Current Assignee Address: JP Yokohama
- Agency: Oliff PLC
- Priority: JP2008-011832 20080122
- Main IPC: G09F3/03
- IPC: G09F3/03

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. The discrimination medium includes an optically transparent first substrate on which a cholesteric liquid crystal layer is formed, the cholesteric liquid crystal layer being formed with a fine asperity used for displaying a hologram, an optically transparent second substrate on which a print layer is formed, the print layer having a predetermined pattern made of ink and having a transparent portion without the ink of the pattern around the pattern, the pattern reflecting or absorbing a light of a predetermined wavelength, and a transparent adhesive layer, wherein the optically transparent first substrate, the optically transparent second substrate, and the transparent adhesive layer, are disposed in turn from a side checked visually.
Public/Granted literature
- US20130208226A1 DISCRIMINATION MEDIUM AND PRODUCTION METHOD THEREFOR Public/Granted day:2013-08-15
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