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Proceedings Paper

Organic photoreceptors: an overview
Author(s): Andrew R. Melnyk; David M. Pai
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Paper Abstract

When Chester Carison invented xerography, he employed sulfur and anthracene as photoconductors. Although the initial commercialization of his idea relied on inorganic photoconductors, the current trend is towards use of organic photoconductors because of their material variety, economy and flexibility. High speed copying and printing machines use belts coated with organic photoreceptors, while personal copiers and printers use aluminum drums dip-coated with organic photoreceptors. Multilayered, organic photoreceptors are now routinely mass produced by the millions with both visible sensitivity for copiers and infrared sensitivity for printers. This paper presents a brief overview of key photoreceptor properties and follow with a survey of electronic organic materials of current interest. The photodischarge characteristic is determined mainly by three factors: the photogeneration, the injection, and the transport of charge carriers. These functions can be accomplished by separate electronic material layers; photogeneration by organic pigments and charge transport by aromatic-amine electron-donor molecules. The photogeneration layers are usually fabricated by solvent coating a dispersion of a pigment in a polymeric binder while the charge transport layers are solvent coated to form a solid solution of the aromatic amine in a polymeric binder. Examples and characteristics of organic pigments and charge transport molecules of current interest are discussed.

Paper Details

Date Published: 1 July 1990
PDF: 14 pages
Proc. SPIE 1253, Hard Copy and Printing Materials, Media, and Processes, (1 July 1990); doi: 10.1117/12.19809
Show Author Affiliations
Andrew R. Melnyk, Xerox/Webster Research Ctr. (United States)
David M. Pai, Xerox/Webster Research Ctr. (United States)

Published in SPIE Proceedings Vol. 1253:
Hard Copy and Printing Materials, Media, and Processes
Joseph Gaynor, Editor(s)

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