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. 17, 1988
Filed:
Apr. 30, 1986
Applicant:
Inventors:
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ; H01T / ;
U.S. Cl.
CPC ...
250326 ; 250325 ; 361229 ; 361230 ; 355 / ;
Abstract
A ventilated corona charging device for charging a charge receptor includes at least one corona wire to which a high voltage is applied, an electrically conductive shield which partly encloses the corona wire and a blower for directing a stream of air at least into a first region defined between the corona wire and the charge receptor, preferably also into a second region defined between the corona wire and the shield, in order to cause corona discharge which is uniform as well as stable.