Title:
SECURITY INK PIGMENT, SECURITY INK, PRINTED MATTER, AND METHOD FOR PRODUCING SECURITY INK PIGMENT
Document Type and Number:
WIPO Patent Application WO/2018/163234
Kind Code:
A1
Abstract:
The present invention improves security of a printed matter, makes a visualized image clear when a latent image, which is formed by a film that is printed on a matter to be printed, is developed into the visualized image, in order to improve security of the printed matter, prints the film by an ordinary printing process, and smooths the film. The security ink pigment comprises powder. The main component of the powder is a Perovskite-type oxide. The Perovskite-type oxide has a composition represented by general formula ABO3. A is mainly composed of Ba. B is mainly composed of Sn. The specific surface area of the powder is 0.079 m2/g to 10 m2/g. The median diameter of the powder is 10 μm or less. The powder emits infrared fluorescence when the powder is irradiated with UV ray excitation light.
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Inventors:
HISHIKI TATSUYA (JP)
Application Number:
PCT/JP2017/008721
Publication Date:
September 13, 2018
Filing Date:
March 06, 2017
Export Citation:
Assignee:
NGK INSULATORS LTD (JP)
International Classes:
C09D11/50; B42D25/30; C01G19/00; C09C1/62
Domestic Patent References:
| WO2015133412A1 | 2015-09-11 | |||
| WO2017022344A1 | 2017-02-09 | |||
| WO2016121792A1 | 2016-08-04 | |||
| WO2015119124A1 | 2015-08-13 |
Attorney, Agent or Firm:
YOSHITAKE Hidetoshi et al. (JP)
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