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:
Nov. 11, 2003
Filed:
Sep. 05, 2002
Albert V. Buettner, Rochester, NY (US);
Heidelberger Druckmaschinen AG, Heidelberg, DE;
Abstract
The surface of an electrostatic recording member in an electrophotographic recording apparatus is charged to a standard primary charge V . The standard primary charge on the recording member is then modulated using a first test exposure E to form a first exposed test area, and using a second test exposure E to form a second exposed test area. A first test surface potential V is measured in the first exposed test area and a second test surface potential V is measured in the second exposed test area. A measured intrinsic sensitivity b associated with the recording member is calculated using V and V . A measured intrinsic toe d associated with the recording member also is calculated using V and V . A corrective charge parameter V is calculated using d , and a corrective exposure parameter E is calculated using b and d . V is then adjusted to equal V , and E is adjusted to equal E .