Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
IDENTIFICATION MEDIUM, DATA READOUT METHOD, IDENTIFICATION APPARATUS, AND METHOD AND APPARATUS FOR MANUFACTURING THE IDENTIFICATION MEDIUM
Document Type and Number:
WIPO Patent Application WO/2012/002441
Kind Code:
A1
Abstract:
Disclosed is an identification medium which facilitates spotting of a counterfeit one of codes that have apparently the same appearance and which enables highly accurate reading of codes. When viewed from the readout side, the identification medium sequentially includes a cholesteric liquid crystal layer (102) on which hologram processing (103) has been performed and which selectively reflects a first rotational direction circular polarization that has a specific center wavelength, and a code formed layer in which a code print pattern (107) to be read out has been formed. When the code print pattern is read at the same time as the code by an optical reader, a hologram image inhibits readout of information of the code, the hologram image having been formed by the hologram processing (103).

Inventors:
HOSHINO, Hidekazu (10, Fukuura 3-chome, Kanazawa-ku, Yokohama-sh, Kanagawa 04, 〒2360004, JP)
星野 秀一 (〒04 神奈川県横浜市金沢区福浦3丁目10番地 日本発條株式会社内 Kanagawa, 〒2360004, JP)
TAKEUCHI, Itsuo (10, Fukuura 3-chome, Kanazawa-ku, Yokohama-sh, Kanagawa 04, 〒2360004, JP)
竹内 逸雄 (〒04 神奈川県横浜市金沢区福浦3丁目10番地 日本発條株式会社内 Kanagawa, 〒2360004, JP)
Application Number:
JP2011/064924
Publication Date:
January 05, 2012
Filing Date:
June 29, 2011
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
NHK SPRING CO., LTD. (10 Fukuura 3-chome, Kanazawa-ku Yokohama-sh, Kanagawa 04, 〒2360004, JP)
日本発條株式会社 (〒04 神奈川県横浜市金沢区福浦3丁目10番地 Kanagawa, 〒2360004, JP)
HOSHINO, Hidekazu (10, Fukuura 3-chome, Kanazawa-ku, Yokohama-sh, Kanagawa 04, 〒2360004, JP)
星野 秀一 (〒04 神奈川県横浜市金沢区福浦3丁目10番地 日本発條株式会社内 Kanagawa, 〒2360004, JP)
TAKEUCHI, Itsuo (10, Fukuura 3-chome, Kanazawa-ku, Yokohama-sh, Kanagawa 04, 〒2360004, JP)
International Classes:
G03H1/02; B42D15/10; G02B5/30; G02B5/32; G03H1/08
Foreign References:
JP2009172798A2009-08-06
JP2008268776A2008-11-06
JP2008268776A2008-11-06
JPH06191525A1994-07-12
JP2008055813A2008-03-13
JPH10250228A1998-09-22
Other References:
See also references of EP 2590032A1
Attorney, Agent or Firm:
SUENARI, Mikio (Asaco Kyobashi Building 3rd floor, 6-13 Kyobashi 1-chome, Chuo-k, Tokyo 31, 〒1040031, JP)
Download PDF:
Claims: