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:
Jan. 31, 2012
Filed:
Jun. 10, 2009
Genji Inada, Koshigaya, JP;
Kansui Takino, Kawasaki, JP;
Genji Inada, Koshigaya, JP;
Kansui Takino, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An apparatus includes an ink jet head and a suction mechanism. The head includes liquid chambers connected with ink tanks by flow passages. The flow passages include a non-branching flow passage and a branching flow passage. The suction mechanism sucks the liquid chamber and ejection ports corresponding to the non-branching flow passage and the branching flow passage, respectively at substantially the same pressure. The distance from the flow passage junction to the ejection ports connected to the branching flow passage is shorter than the distance from the flow passage junction to the ejection ports connected to the non-branching flow passage. The volume of the liquid chambers corresponding to the branching flow passage is less than or equal to the volume of the liquid chamber corresponding to the non-branching flow passage.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile