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:
Oct. 11, 1988
Filed:
Oct. 20, 1986
Applicant:
Inventor:
Masami Gokita, Tokyo, JP;
Assignee:
Tokyo Shibaura Denki Kabushiki Kaisha, Kawasaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H / ;
U.S. Cl.
CPC ...
361 91 ; 361 86 ; 361 87 ; 361 93 ; 355 / ; 355 / ; 364483 ;
Abstract
A charger abnormality detecting device and method uses a current detector for detecting a current flowing between a photoconductive drum and a charger arranged near the drum, a current detector for detecting a current flowing through the charger, and a voltage detector for detecting a high voltage applied to the charger. The type of abnormality of the charger is discriminated in accordance with currents and a voltage detected by the current detectors and the voltage detector, respectively.
Gokita, Masami. (1988). Method and apparatus for detecting charger abnormality (U.S. Patent No. 4777554). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4777554
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