Video/optical requirements for a highlight-color laser scanner

Ronald E. Jodoin; Robert P. Loce; Michael Cianciosi; Martin Banton

doi:10.1117/12.207600

27 April 1995 Video/optical requirements for a highlight-color laser scanner

Ronald E. Jodoin, Robert P. Loce, Michael Cianciosi, Martin Banton

Proceedings Volume 2413, Color Hard Copy and Graphic Arts IV; (1995) https://doi.org/10.1117/12.207600
Event: IS&T/SPIE's Symposium on Electronic Imaging: Science and Technology, 1995, San Jose, CA, United States

Abstract

The desire to print high quality, highlight color documents at production rates has brought on the need for a single-pass highlight color laser scanner. We examine a pulsed-imaging, pulse-width-modulated polygon laser scanner that enables multilevel exposure and subsequent development of black and highlight color toner. As currently used in the Xerox 4850 digital printer, this scanner writes three different exposure levels; no exposure, mid-level exposure and high exposure for black, white, and highlight color, respectively. In this paper we review the functioning of a pulsed-imaging scanner and then examine how it is used in a pulse-width-modulated trilevel mode. A linear-systems model is used to examine the specialized video required for achieving uniform line appearance for both black and highlight color. This model further describes how image enhancement is enabled. A complete laser/xerographic model is used to simulate the output.

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Ronald E. Jodoin, Robert P. Loce, Michael Cianciosi, and Martin Banton "Video/optical requirements for a highlight-color laser scanner", Proc. SPIE 2413, Color Hard Copy and Graphic Arts IV, (27 April 1995); https://doi.org/10.1117/12.207600

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KEYWORDS

Modulators

Video

Image enhancement

Scanners

Laser scanners

Modulation

Acoustics

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