Patent Number: 6,166,550

Title: Charge measuring instrument

Abstract: An apparatus for obtaining measurements of the charge on a surface of a member during a period of time while applying a charge to the surface of the member is provided. The apparatus includes a frame. The member is rotatably secured to the frame. The apparatus also includes a charging device for applying the charge to the member. The charging device includes a charging device portion thereof positioned proximate to an external periphery of the member. The apparatus also includes a mechanism for rotating the member. The mechanism is operably associated with the frame. The apparatus also includes a charge measuring device operably associated with the support for measuring an electrical field emanating from the member. The charge measuring device includes a measuring device portion thereof positioned proximate to a measured position on an external periphery of the member. The mechanism is cooperable with the member to rotate the member. The charge measuring device is adapted to measure a charge at the measured position after the member is so rotated.

Inventors: Abramsohn; Dennis A. (Pittsford, NY), Eckstrom; Lois A. (Williamson, NY), Foley; Diane M. (Palmyra, NY)

Assignee: Xerox Corporation

International Classification: G01N 27/60 (20060101); G01N 27/61 (20060101); G01N 027/61 ()

Expiration Date: 12/26/2017