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:
Jul. 05, 1977
Filed:
Mar. 31, 1976
Applicant:
Inventor:
Tadashi Yamashita, Yokohama, JA;
Assignee:
Ricoh Co., Ltd., , JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
250324 ; 250325 ;
Abstract
The charging device for automatic copying apparatus comprises charging wires supplied with a charge voltage at all times and a plurality of lamps disposed in the rearward position of the charging device. As turning on of the lamps can prevent the photoconductor from charging by the charging wires, a charged zone corresponding to the effective image region can be produced on the photoconductor by controlling turning on and off of the lamps.