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:
Mar. 09, 1999
Filed:
Nov. 03, 1997
Applicant:
Inventors:
Masato Yanagida, Tokyo, JP;
Atsuo Tokunaga, Kanagawa, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ; G03G / ;
U.S. Cl.
CPC ...
399101 ; 399 43 ; 399 44 ; 399297 ;
Abstract
In an image forming apparatus of the type including a movable belt and a cleaning blade for cleaning the belt, a toner image in the form of an exclusive line is formed on an image carrier between sheets and then transferred to the belt so as to feed toner to the edge of the cleaning blade. The toner prevents the edge of the cleaning blade from being turned over by the belt. The toner is fed to the cleaning blade in amounts different in the widthwise direction of the belt and can therefore be controlled in amount in the above direction.