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:
May. 20, 2014
Filed:
Aug. 25, 2011
Yoshinori Nakagawa, Kawasaki, JP;
Yuji Hamasaki, Kawasaki, JP;
Atsushi Takahashi, Kawasaki, JP;
Nobuhiro Kitabatake, Kawasaki, JP;
Kei Yoshizawa, Tokyo, JP;
Yoshinori Nakagawa, Kawasaki, JP;
Yuji Hamasaki, Kawasaki, JP;
Atsushi Takahashi, Kawasaki, JP;
Nobuhiro Kitabatake, Kawasaki, JP;
Kei Yoshizawa, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
Provided are an inkjet printing apparatus and a method of controlling an inkjet printing apparatus whereby the performing of a suction discharge operation, for air bubbles that have penetrated inside an ink supply line, can be suppressed to a minimum necessary number of times, and whereby the ink discharge volume that accompanies air bubble suction discharge operations can be kept low. The volume of an air bubble that penetrates into an ink supply line is estimated on the basis of an elapsed time since the last air bubble suction discharge operation, and in addition, the volume of an air bubble that penetrates into the ink supply line during main tank installation is predicted. The suction discharge operation (choke suction operation) for suctioning out and discharging air bubbles is conducted when the sum of these estimated volumes becomes equal to or greater than a predetermined value.