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:
Aug. 27, 2013
Filed:
Mar. 20, 2009
Wakako Yamamoto, Sagamihara, JP;
Hidehiko Kanda, Yokohama, JP;
Hirokazu Tanaka, Kawasaki, JP;
Kenichi Oonuki, Kawasaki, JP;
Wakako Yamamoto, Sagamihara, JP;
Hidehiko Kanda, Yokohama, JP;
Hirokazu Tanaka, Kawasaki, JP;
Kenichi Oonuki, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An ink jet printing apparatus and a print head recovery method are provided which effectively execute a preliminary ejection to eject ink not contributing to image printing from nozzle opening of the print head to maintain the ink ejection performance in good condition. The ink in the print head is heated to a first temperature, at which a first preliminary ejection is executed. Then, when the ink temperature falls to a second temperature, which is lower than the first temperature, a second preliminary ejection is executed.