Laser beam scanner for uniform halftones

Toshinori Ando

doi:10.1117/12.46345

1 August 1991 Laser beam scanner for uniform halftones

Toshinori Ando

Proceedings Volume 1458, Printing Technologies for Images, Gray Scale, and Color; (1991) https://doi.org/10.1117/12.46345
Event: Electronic Imaging '91, 1991, San Jose, CA, United States

Abstract

The authors have developed an auto focus function for laser beam scanners to maintain the best focusing condition of the laser spot, which contributes favorably to the quality of halftone images. The focus deviation of the laser beam scanner attributable to variations in the ambient temperature, mechanical vibration, etc., is measured by the auto focus detector and is automatically corrected by the focus adjusting mechanism.

Citation Download Citation

Toshinori Ando "Laser beam scanner for uniform halftones", Proc. SPIE 1458, Printing Technologies for Images, Gray Scale, and Color, (1 August 1991); https://doi.org/10.1117/12.46345

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