The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 03, 2013
Filed:
Aug. 04, 2011
Yoko Sekine, Bunkyo-Ku, JP;
Manabu Yamamoto, Ichikawa, JP;
Mitsuru Kitamura, Suginami-Ku, JP;
Tsuyoshi Yamauchi, Abiko, JP;
Akiko Kitamura, Nagareyama, JP;
Sakurako Hatori, Nagareyama, JP;
Yoko Sekine, Bunkyo-Ku, JP;
Manabu Yamamoto, Ichikawa, JP;
Mitsuru Kitamura, Suginami-Ku, JP;
Tsuyoshi Yamauchi, Abiko, JP;
Akiko Kitamura, Nagareyama, JP;
Sakurako Hatori, Nagareyama, JP;
Dai Nippon Printing Co., Ltd., Shinjuku-Ku, JP;
Abstract
There is provided a light-emitting medium by which whether a valuable paper or the like is forged or not can be judged easily and promptly. A light-emitting medium constituting a valuable paper includes a light-emitting image. The light-emitting image is composed of a pattern area formed on a substrate by using a first fluorescent ink containing a first fluorescent material, and a background area formed on the substrate by using a second fluorescent ink containing a second fluorescent material. When UV-A is irradiated, the first fluorescent ink and the second fluorescent ink emit light of colors that are viewed as different colors from each other. In addition, when UV-C is irradiated, the first fluorescent ink and the second fluorescent ink emit light of colors that are viewed as different colors from each other, the colors being different from the colors that are viewed when the UV-A is irradiated.