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:
Dec. 21, 2010
Filed:
Mar. 10, 2006
Masako Udagawa, Kawasaki, JP;
Hirofumi Ichinose, Tokyo, JP;
Kouhei Nakagawa, Kawasaki, JP;
Hideki Takayama, Fujisawa, JP;
Shinichi Hakamada, Kawasaki, JP;
Masako Udagawa, Kawasaki, JP;
Hirofumi Ichinose, Tokyo, JP;
Kouhei Nakagawa, Kawasaki, JP;
Hideki Takayama, Fujisawa, JP;
Shinichi Hakamada, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An object of the present invention is to provide an ink set which can produce images with color developability undoubtedly higher than images produced by a conventional pigment ink and closer to images produced by silver halide photography or output from a laser printer, in particular, color developability in a red color region, while keeping ink reliability. The ink set comprises at least a first ink and a second ink wherein the first ink has a maximum absorption wavelength in a region of 450 nm or more and less than 500 nm and the second ink has a maximum absorption wavelength in a region of 500 nm or more and 570 nm or less, and the ink set has a B/A ratio of a minimum absorbance B to a maximum absorbance A of 0.7 or more and 1.0 or less among absorbances of the first ink and the second ink in total in a region of 450 nm or more and 570 nm or less.