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:
Nov. 06, 2007
Filed:
Jun. 13, 2005
Tomomi Furuichi, Kanagawa-ken, JP;
Rie Takekoshi, Kanagawa-ken, JP;
Daigoro Kanematsu, Kanagawa-ken, JP;
Naoko Baba, Kanagawa-ken, JP;
Kazuo Suzuki, Kanagawa-ken, JP;
Mitsutoshi Nagamura, Tokyo, JP;
Tomomi Furuichi, Kanagawa-ken, JP;
Rie Takekoshi, Kanagawa-ken, JP;
Daigoro Kanematsu, Kanagawa-ken, JP;
Naoko Baba, Kanagawa-ken, JP;
Kazuo Suzuki, Kanagawa-ken, JP;
Mitsutoshi Nagamura, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The image quality deterioration due to the collection of dots of low-lightness by the preliminary ejection is prevented, in the case of performing the ink ejection for preliminary ejection during the printing onto printing paper. More specifically, the preliminary ejection pattern is set as a pattern in which the distance between a cyan dot of relatively low-lightness and a magenta dot is longer than a distance between a yellow dot of relatively high-lightness and a cyan dot nearest the yellow dot among low-lightness colors. Closely forming dots of low-lightness that would be perceived as a group of collected dots can be prevented, thereby performing printing that will not deteriorate the printing quality due to the paper preliminary ejection.