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. 06, 1997
Filed:
Oct. 05, 1995
Applicant:
Inventor:
Wilfred E Vail, Litchfield, NH (US);
Assignee:
Nashua Corporation, Nashua, NH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
430108 ;
Abstract
An improved carrier particle for use with a toner in electrostatic copying is described. The particle comprises an electroconductive core and a coating. In one embodiment the coating is made by combining a fluorocarbon resin with a charge control agent that has the same polarity as the toner. The carrier imparts a strongly positive triboelectric charge to the toner while resisting adhesion of toner particles.