Title:
INK COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2010/001887
Kind Code:
A1
Abstract:
Disclosed is an ink composition comprising a microparticulate phosphor which can emit a high-brightness fluorescent light by ultraviolet ray and has a predetermined nanosize.
The ink composition comprises a microparticulate phosphor represented by the formula: YVO4:A [wherein A represents a rare earth metal other than yttrium] and capable of emitting a fluorescent light upon the excitation with ultraviolet ray. The phosphor has an average primary particle diameter of 30 to 400 nm and is not burned. The phosphor can be produced by, for example, mixing and reacting a composition (I) comprising an yttrium compound, a compound of a rare earth metal other than yttrium and a complex-forming compound in water with a composition (II) comprising a vanadium compound in water.
Inventors:
ISOBE TETSUHIKO (JP)
TAKESHITA SATORU (JP)
KONO MITSURU (JP)
NIIKURA SEIJI (JP)
TAKESHITA SATORU (JP)
KONO MITSURU (JP)
NIIKURA SEIJI (JP)
Application Number:
PCT/JP2009/061945
Publication Date:
January 07, 2010
Filing Date:
June 30, 2009
Export Citation:
Assignee:
UNIV KEIO (JP)
SINLOIHI CO LTD (JP)
ISOBE TETSUHIKO (JP)
TAKESHITA SATORU (JP)
KONO MITSURU (JP)
NIIKURA SEIJI (JP)
SINLOIHI CO LTD (JP)
ISOBE TETSUHIKO (JP)
TAKESHITA SATORU (JP)
KONO MITSURU (JP)
NIIKURA SEIJI (JP)
International Classes:
C09D11/00; C09D11/02; C09K11/82
Domestic Patent References:
| WO2008093845A1 | 2008-08-07 |
Foreign References:
| JP2005502573A | 2005-01-27 | |||
| JP2007063403A | 2007-03-15 | |||
| JPH0586362A | 1993-04-06 | |||
| JPH1142845A | 1999-02-16 | |||
| JP2006524623A | 2006-11-02 | |||
| JP2003213255A | 2003-07-30 | |||
| JP2004075889A | 2004-03-11 | |||
| JP2007284304A | 2007-11-01 | |||
| JPH0417597B2 | 1992-03-26 |
Other References:
A. HUIGNARD ET AL.: "Synthesis and Characterizations of YV04:Eu Colloids", CHEM. MATER., vol. 14, 2002, pages 2264 - 2269, XP001162217
K.RIWOTZKI ET AL.: "Wet-Chemical Synthesis of Doped Colloidal Nanoparticles:YV04:Ln (Ln=Eu, Sm, Dy)", J.PHYS.CHEM.B, vol. 102, 1998, pages 10129 - 10135, XP001034725
See also references of EP 2295507A4
K.RIWOTZKI ET AL.: "Wet-Chemical Synthesis of Doped Colloidal Nanoparticles:YV04:Ln (Ln=Eu, Sm, Dy)", J.PHYS.CHEM.B, vol. 102, 1998, pages 10129 - 10135, XP001034725
See also references of EP 2295507A4
Attorney, Agent or Firm:
KUMAKURA Yoshio et al. (JP)
Sadao Kumakura (JP)
Sadao Kumakura (JP)
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