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:
Feb. 06, 2018
Filed:
Jul. 22, 2016
Canon Kabushiki Kaisha, Tokyo, JP;
Fumiko Suzuki, Kawasaki, JP;
Mayuko Yamagata, Inagi, JP;
Satoshi Seki, Kawasaki, JP;
Hirokazu Tanaka, Inagi, JP;
Gou Sasaki, Kawasaki, JP;
Tsukasa Doi, Tokyo, JP;
Kiichiro Takahashi, Yokohama, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
An image printing apparatus can print an image in which graininess is suppressed while using a color material of light blue. To achieve this, the color material of light blue satisfies the following condition.Δ≧(Δ)>0 andΔ≧(Δ)>0Here, ΔLrepresents a difference in lightness between cyan ink and a blank area, ΔLrepresents a difference in lightness between magenta ink and the blank area, and ΔLrepresents a difference in lightness between light blue ink and the blank area. Further, the color material of light blue satisfies the following condition.+()/2≦−()/2Here, hrepresents a hue of the cyan ink, hrepresents a hue of the magenta ink, hrepresents a hue of the image printed with the cyan ink and the magenta ink in the same amount, and hrepresents a hue of the light blue ink.