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:
Apr. 22, 2014
Filed:
Jul. 22, 2011
Toshimitsu Danzuka, Tokyo, JP;
Kazuo Suzuki, Yokohama, JP;
Yutaka Kawamata, Koganei, JP;
Masataka Kato, Yokohama, JP;
Asako Tomida, Kawasaki, JP;
Jumpei Jogo, Kawasaki, JP;
Hiroaki Komatsu, Yokohama, JP;
Toshimitsu Danzuka, Tokyo, JP;
Kazuo Suzuki, Yokohama, JP;
Yutaka Kawamata, Koganei, JP;
Masataka Kato, Yokohama, JP;
Asako Tomida, Kawasaki, JP;
Jumpei Jogo, Kawasaki, JP;
Hiroaki Komatsu, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
This invention prevents a possible color mixing, that may occur more than a predetermined time after the wiping operation, by executing a pre-printing cleaning ejection while at the same time minimizing the amount of waste ink produced by the cleaning ejection. To this end, if a color mixing is determined as being likely to occur an elapsed time after the previous wiping operation, the pre-printing cleaning ejection uses a second ink volume U, which represents both the color mixing elimination ink volume and the ejection failure elimination ink volume. If it is decided that there is no likelihood of the color mixing occurring the elapsed time after the wiping operation, the pre-printing cleaning ejection uses the first ink volume D which represents only the ejection failure elimination ink volume.