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. 30, 2013
Filed:
Apr. 06, 2009
Osamu Morita, Yokosuka, JP;
Osamu Morita, Yokosuka, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An air pump is driven to supply air via an air supply tube to a sub tank, by which a predetermined quantity of the air is mixed inside the sub tank via a gas-liquid separation membrane. Next, a carriage is swayed to agitate the ink by using the air mixed inside the sub tank. Then, the air pump is driven to discharge the air inside the sub tank via the gas-liquid separation membrane. In the above-described agitating motions, since the air utilized for the agitation is discharged from an ink tank after agitation processing, it is possible to prevent the air from remaining inside the ink tank to inflate, thereby adversely influencing the pressure relationship with a printing head.