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:
May. 30, 1989
Filed:
Jan. 25, 1988
Applicant:
Inventors:
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
355225 ; 355274 ; 355276 ; 355315 ;
Abstract
A corona discharging unit comprises a control grid to which a diode is attached and a high voltage AC power is applied to its discharge line. A single unit of this design with a single power source, when used in an electrophotographic copying machine with a rotating photosensitive drum, can perform more than one of the functions required in a copying process such as preliminary charging of the drum, transferring images, discharging and cleaning.