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:
Jul. 30, 2002
Filed:
Nov. 29, 2000
Alan J. Werner, Jr., Rochester, NY (US);
Xerox Corporation, Stamford, CT (US);
Abstract
An electrostatic voltmeter (ESV) and a method thereof provides an electrical signal proportional to an electrostatic potential. The ESV includes a high voltage input section that receives a high voltage signal representative of an electrostatic potential. The high voltage signal input section then generates a current signal representative of the electrostatic potential. The current signal is applied to a control and sensing circuit. A high voltage current source is connected between the high voltage input section and a high voltage potential. The high voltage current source acts as an active load for the control and sensing circuit. A voltage level determining section is connected to a node between the high voltage input section and the high voltage current source for providing an electrical signal proportional to the electrostatic potential. The EVS disclosed herein is particularly useful in measuring electrostatic potential of a photoreceptor to control imaging in an electrophotographic imaging system.