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:
Jun. 07, 2011
Filed:
Mar. 10, 2010
Hiroyuki Tanaka, Kawasaki, JP;
Takashi Nojima, Tokyo, JP;
Hiroyuki Tanaka, Kawasaki, JP;
Takashi Nojima, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
Activation/deactivation of a pumpis executed with a delay of a predetermined time from a forward/reverse switching of rotation of a conveying roller, while an activation/deactivation of lock meansis executed simultaneous with a forward/reverse switching of rotation of the conveying roller, and, at the switching of the driving direction of the conveying roller, a difference in timing is provided in the drive transmission so as not to transmit the driving power to the pump for a time necessary for the activation/deactivation switching of the lock means. By separating the cap from the recording head while retaining a negative pressure in the cap after the ink suction operation, thereby reducing the ink amount remaining on the discharge port face or in the cap after the ink suction operation.