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:
Jan. 16, 2018
Filed:
May. 12, 2016
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventors:
Shinya Ishikawa, Kawasaki, JP;
Yasufumi Ogasawara, Tachikawa, JP;
Hisao Okita, Yokohama, JP;
Takashi Sakai, Kawasaki, JP;
Toru Oshika, Kawasaki, JP;
Assignee:
CANON KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 29/38 (2006.01); B41J 2/07 (2006.01); B41J 2/045 (2006.01);
U.S. Cl.
CPC ...
B41J 2/07 (2013.01); B41J 2/0452 (2013.01); B41J 2/0455 (2013.01); B41J 2/0458 (2013.01); B41J 2/04515 (2013.01); B41J 2/04541 (2013.01); B41J 2/04555 (2013.01);
Abstract
A control apparatus including a power supply unit configured to supply electric power, comprises: a capacitor connected to a power supply line extending from the power supply unit to a printhead; a discharge circuit configured to release charge stored in the capacitor; and a control unit configured to control a current value during a discharge operation by the discharge circuit, such that the current value increases as a voltage value of the capacitor decreases.