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:
Feb. 05, 2002
Filed:
Dec. 14, 2000
Applicant:
Inventor:
Ian Pitts, Bassingbourn, GB;
Assignee:
Xerox Corporation, Stamford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 1/516 ;
U.S. Cl.
CPC ...
G03G 1/516 ;
Abstract
In a xerographic printing apparatus, during the transfer step wherein marking material is electrostatically transferred from the photoreceptor to the print sheet and the sheet is then detached from the photoreceptor, a DC bias starts at a high absolute value when the lead edge of the sheet is proximate the photoreceptor, and is then decreased as different portions of the sheet pass the photoreceptor. The DC bias can be decreased to zero in the course of the transfer step, or can change sign by the time the trail edge is transferred.