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:
Sep. 24, 2013
Filed:
Nov. 16, 2007
Yasushi Nakano, Inagi, JP;
Hajime Kaneko, Kodaira, JP;
Yasushi Nakano, Inagi, JP;
Hajime Kaneko, Kodaira, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A printing apparatus capable of specifying the color material concentration in ink can discharge or suck the ink in a suitable amount for suppressing degradation in print quality or ink supply failure. The printing apparatus executes printing by scanning a printhead having an orifice to discharge ink. The printing apparatus includes a scanning unit which scans the printhead without discharging the ink to generate a discharge failure orifice, and a detection unit which detects the presence of the discharge failure orifice. The color material concentration in the ink is estimated on the basis of the number of times or the time of scanning without discharging the ink required until the detection unit detects the presence of the discharge failure orifice.