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. 19, 1986
Filed:
Jan. 16, 1984
Applicant:
Inventors:
Toshiro Matui, Kawasaki, JP;
Koji Suzuki, Yokohama, JP;
Jyoji Nagahira, Yokohama, JP;
Kunio Yoshihara, Tokyo, JP;
Kazuyoshi Takahashi, Kawasaki, JP;
Tadashi Ishikawa, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M / ;
U.S. Cl.
CPC ...
363 21 ; 307265 ; 323288 ; 363 97 ;
Abstract
A power supply device has improved power efficiency and stability for use in a copier or the like. The primary power supply to the device being switched with a constant turned-off period to achieve variable power supply control.