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Proceedings Paper

Fidelity Control Of Electrophotographic Print Process
Author(s): J. L. Crawford
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Paper Abstract

The stroke-width and halftone print fidelity from an electrophotographic (EP) printer is dependent on the size and shape of the discharge exposure spot. However, there are conflicting requirements on the spot size in that a large spot is needed to prevent scan lines in discharge areas, while a small spot is needed to print fine details. Others have proposed methods of optimizing the spot size. This paper presents the analysis and experimental verification of a data-dependent method of exposure control that allows the simultaneous satisfaction of both requirements. The result is better print fidelity over a broad range of applications from text to halftone images. This approach also leads to the more general result that, under certain conditions, the print fidelity from EP printers can be independently controlled, thereby allowing a greater latitude in the optimization of electrostatic set points, developer parameters, and optical spot size. This independence also allows relatively simple compensation for variations in other parameters that affect fidelity as well as adjustments based on user preference.

Paper Details

Date Published: 6 July 1989
PDF: 9 pages
Proc. SPIE 1079, Hard Copy Output, (6 July 1989); doi: 10.1117/12.952820
Show Author Affiliations
J. L. Crawford, IBM Corporation (United States)


Published in SPIE Proceedings Vol. 1079:
Hard Copy Output
Leo Beiser; Stephen L. Corsover; John M. Fleischer; Vsevolod S. Mihajlov; Ken-Ichi Shimazu, Editor(s)

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