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:
Sep. 20, 2005
Filed:
Jul. 22, 2002
Albert V. Buettner, Rochester, NY (US);
Dennis R. Fronheiser, Rochester, NY (US);
Anne F. Lairmore, Hilton, NY (US);
David S. Weiss, Rochester, NY (US);
Jeffrey R. Murray, Palmyra, NY (US);
Marie B. O'regan, Santa Barbara, CA (US);
Albert V. Buettner, Rochester, NY (US);
Dennis R. Fronheiser, Rochester, NY (US);
Anne F. Lairmore, Hilton, NY (US);
David S. Weiss, Rochester, NY (US);
Jeffrey R. Murray, Palmyra, NY (US);
Marie B. O'Regan, Santa Barbara, CA (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A multi-active electrophotographic charge generation element comprises a conductive support, a charge generation layer (CGL) disposed on the conductive support, and a charge transport layer (CTL) disposed on the charge generation layer. The charge generation layer (CGL) includes a charge-generation material comprising an aggregated or crystalline form of a first dye or pigment and a first polymeric binder. The charge transport layer (CTL) comprises at least one charge-transport agent, a second dye or pigment having absorption in a selected spectral region that at least partially overlaps the absorption of a dissolved non-aggregated or non-crystalline form of the first dye or pigment, and a second polymeric binder. The second dye or pigment in the charge transport layer absorbs radiation in the selected spectral region that is incident on the charge transport layer, thereby shielding the charge generation layer from that radiation and mitigating visible radiation-induced photofatigue.