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Proceedings Paper

Optical systems for laser thermal printing
Author(s): Andrew F. Kurtz
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Paper Abstract

This paper is an overview of the optical designs used in array-type multispot laser thermal printers. A variety of unique systems have been developed for high-power high-throughput printing applications where laser light is generally transformed into a linear arrangement of modulated beams focused onto light-sensitive media. The typical light source is a monolithic laser diode array that emits a series of anamorphic partially coherent infrared beams. An optical system, comprising anamorphic, micro-optics, and designed according to principles from classical imaging optics, illumination optics, and Gaussian beam optics, is needed to conduct the light to the media. Special optical components, including rod lenses, laser smile correctors, or spatial light modulator arrays may be employed. Because the printing applications are highly sensitive to repetitive artifacts, the designs typically provide light source redundancy and light homogenization. The interaction of the incident light with the thermal media can also affect the design. These various optical design issues, and a number of design solutions, are the subjects of this review paper.

Paper Details

Date Published: 29 September 2004
PDF: 20 pages
Proc. SPIE 5525, Laser Beam Shaping V, (29 September 2004); doi: 10.1117/12.554057
Show Author Affiliations
Andrew F. Kurtz, Eastman Kodak Co. (United States)


Published in SPIE Proceedings Vol. 5525:
Laser Beam Shaping V
Fred M. Dickey; David L. Shealy, Editor(s)

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