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. 27, 2011
Filed:
Sep. 18, 2008
Daisaku Ide, Tokyo, JP;
Hirokazu Yoshikawa, Kawasaki, JP;
Hitoshi Nishikori, Tokyo, JP;
Takeshi Yazawa, Yokohama, JP;
Atsuhiko Masuyama, Tokyo, JP;
Akiko Maru, Kawasaki, JP;
Hideaki Takamiya, Kawasaki, JP;
Hiroshi Tajika, Yokohama, JP;
Daisaku Ide, Tokyo, JP;
Hirokazu Yoshikawa, Kawasaki, JP;
Hitoshi Nishikori, Tokyo, JP;
Takeshi Yazawa, Yokohama, JP;
Atsuhiko Masuyama, Tokyo, JP;
Akiko Maru, Kawasaki, JP;
Hideaki Takamiya, Kawasaki, JP;
Hiroshi Tajika, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An object of this invention is to prevent prolongation of the time taken for a suction recovery operation while suppressing wasteful consumption of ink in the suction recovery operation. An ink-jet printing apparatus includes a plurality of caps which, when a plurality of nozzles of an ink-jet head are divided into a plurality of nozzle groups, are arranged one by one for the respective nozzle groups, and cap the respective nozzle groups, a suction pump which generates a negative pressure in the plurality of caps to suck ink from the plurality of nozzles, and is arranged commonly for the plurality of caps, and a control unit which controls the suction pump so as to make the negative pressure by the suction pump act on all the caps when a common negative pressure is generated in the plurality of caps, and make different negative pressures by the suction pump act sequentially on the plurality of caps when different negative pressures are generated in the respective caps.