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. 30, 2008
Filed:
Oct. 13, 2006
Masako Udagawa, Kanagawa, JP;
Sadayuki Sugama, Ibaraki, JP;
Shoji Koike, Kanagawa, JP;
Makoto Aoki, Kanagawa, JP;
Akira Nagashima, Tokyo, JP;
Shinichi Hakamada, Kanagawa, JP;
Masako Udagawa, Kanagawa, JP;
Sadayuki Sugama, Ibaraki, JP;
Shoji Koike, Kanagawa, JP;
Makoto Aoki, Kanagawa, JP;
Akira Nagashima, Tokyo, JP;
Shinichi Hakamada, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The present invention provides a fluorescence ink having a high fluorescence intensity, and an ink jet recording method using the same. The ink contains a first fluorescent coloring material that emits fluorescence at a predetermined fluorescence wavelength to be used for measurement or determination with excitation at a predetermined excitation wavelength, a second fluorescent coloring material that emits fluorescence on excitation at the predetermined excitation wavelength, where the excitation spectrum of the first coloring material in the ink to obtain the fluorescence at the predetermined emission wavelength has a peak wavelength range next to the predetermined fluorescence wavelength, and the emission fluorescence spectrum of the second coloring material has an emission wavelength region substantially including at least the above peak wavelength range.