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:
Oct. 01, 2002
Filed:
Sep. 05, 2001
Matthias H. Regelsberger, Rochester, NY (US);
David Hockey, Brockport, NY (US);
Heidelberg Digital L.L.C., Rochester, NY (US);
Abstract
A method and apparatus for identifying the root causes of image artifacts visible in the printed output of an electrophotographic printer, activating a special operating mode for the marking engine, and referencing the printing process intentionally to each rotating member of the electrophotographic process in turn. The referencing insures that image artifacts and/or non-uniformities originating from each rotating member are visible in the same location on each printed output. Since the rotating members employed are intentionally designed to be different in diameter, the referencing of the printing process to each one of the rotating members in conjunction with variable receiver sizes enables an operator to associate each image artifact or non-uniformity with a specific rotating member causing it. The appearance of image artifacts is enhanced through zero offset voltage printing and flat-field exposure of the rotating member images as appropriate. Where referencing of the printing process cannot be done,master timing marks are printed on the rotating member images to guide the image interpretation.