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:
Feb. 01, 2000
Filed:
Jun. 09, 1997
Applicant:
Inventors:
Assignee:
Bridgestone Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ; G03G / ;
U.S. Cl.
CPC ...
4283193 ; 4283197 ; 428323 ; 428421 ; 428422 ; 428906 ; 361221 ; 361225 ; 399176 ; 430902 ; 492 53 ; 492 56 ;
Abstract
The invention provides a charging roller for electrically charging a photoconductor by placing the roller in contact with the photoconductor and applying voltage between them. The roller has an elastic shaft and an outermost layer of less than 30 .mu.m thick containing an aqueous fluorocarbon resin. The charging roller is effective for providing a constant supply of electric charge to the photoconductor and preventing residual toner from depositing onto the roller.