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:
Dec. 03, 2002
Filed:
Jan. 29, 2001
Applicant:
Inventor:
Alan J. Werner, Jr., Rochester, NY (US);
Assignee:
Xerox Corporation, Stamford, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 2/912 ;
U.S. Cl.
CPC ...
G01R 2/912 ;
Abstract
A system for enhancing air purging of a modulator assembly of an electrostatic voltmeter for an electrophotographic process. A vane connected to a chopper element is located at one end of a vibratory beam so as to move when the vibratory beam oscillates. Movement of the vane generates air turbulence and currents in the vicinity of the modulator and sensor electrode thereby improving purging of toner particles and other contaminants and preventing such contaminants, which tend to cause drift errors, from settling in the vicinity of the modulator and sensor electrode.