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, 1977
Filed:
Jan. 30, 1976
Ricoh Co., Ltd., Tokyo, JA;
Abstract
A roller is rotatable so that its surface moves in a direction opposite to a photoconductive drum to remove excess liquid developer from the drum. Rolling contact bearings are mounted on opposite ends of a shaft supporting the roller and have a diameter which is slightly larger than that of the roller so that when the bearings are pressed against the drum a slight clearance is maintained between the surfaces of the drum and the roller. The bearings are sealed and filled with a lubricant which does not degrade the liquid developer if mixed therewith. A wiper contacts the roller to remove developer pricked up thereby from the drum. Wipers are further disposed in contact with the drum upstream of the bearings to remove developer from the drum in these areas prior to contact with the bearings.