Title:
DISPLAY MEDIUM AND DISPLAYING METHOD
Document Type and Number:
WIPO Patent Application WO/2005/096097
Kind Code:
A1
Abstract:
Disclosed is a display medium with excellent convenience and high security. Also disclosed is a displaying method for recording and displaying information on the display medium. The display medium is characterized by having a multilayer structure including a recording layer transparent to visible light which is composed of a recording layer-forming material containing a coloration component which is turned into a colored state by the action of ultraviolet light, and an ultraviolet-shielding layer transparent to visible light which is arranged on top of the recording layer. The displaying method for recording and displaying information on such a display medium is characterized in that information is recorded through two-photon absorption to be displayed on the display medium by collecting laser light having a wavelength longer than visible light on the recording layer of the display medium so that the layer is irradiated with the collected laser light.
Inventors:
IRIE MASAHIRO (JP)
MIHARA MAKOTO (JP)
MIHARA MAKOTO (JP)
Application Number:
PCT/JP2005/006091
Publication Date:
October 13, 2005
Filing Date:
March 30, 2005
Export Citation:
Assignee:
IRIE MASAHIRO (JP)
JSR CORP (JP)
MIHARA MAKOTO (JP)
JSR CORP (JP)
MIHARA MAKOTO (JP)
International Classes:
G03C1/73; G03C1/74; G03C1/76; G06K19/10; (IPC1-7): G03C1/73; G03C1/74; G06K19/10
Foreign References:
| JP2003308634A | 2003-10-31 | |||
| JP2003255489A | 2003-09-10 | |||
| JP2002309104A | 2002-10-23 | |||
| JP2002334480A | 2002-11-22 | |||
| JP2004503826A | 2004-02-05 | |||
| JP2004149501A | 2004-05-27 | |||
| JPH06138577A | 1994-05-20 | |||
| JPH0445997A | 1992-02-14 | |||
| JPH0246443A | 1990-02-15 | |||
| JPS5087318A | 1975-07-14 | |||
| JP2004020596A | 2004-01-22 | |||
| JP2004259369A | 2004-09-16 |
Attorney, Agent or Firm:
Ohi, Masahiko (4 Kanda Surugadai 3-chom, Chiyoda-ku Tokyo 62, JP)
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