Double Winged LD Beam Scanning System For Computer Graphics

Fumitaka Abe; Satoshi Itami; Tohru Satoh; Tadashi Matsuda

doi:10.1117/12.939400

14 May 1984 Double Winged LD Beam Scanning System For Computer Graphics

Fumitaka Abe; Satoshi Itami; Tohru Satoh; Tadashi Matsuda

Author Affiliations +

Proceedings Volume 0457, Advances in Display Technology IV; (1984) https://doi.org/10.1117/12.939400
Event: 1984 Los Angeles Technical Symposium, 1984, Los Angeles, United States

Abstract

A compact "double winged" laser diode (LD) optical system for use in a laser printeK for computer graphics scans a width of 515 mm using two beams and focuses an 80 um (1/e z) diameter spot to produce a resolution of 480 dpi over the entire width. The system was developed by using a scanning module which combines two preobjective scanning units with one polygon. The configuration of two preobjective scanning is symmetrical with respect to a single 12-facet polygon. Each preobjective scanning module includes a compact LD module, an f0 lens, and a flat mirror. The LD module consists of a laser diode, a collimating lens, and a beam-shaped prism. This system has two scanning beams and each beam scans a half recording width. The paper discusses how the left and right scanning images are apposed at the image center. This system features compactness, greater image width, higher resolution, and a reduced need for high-precision polygon fabrication.

Citation Download Citation

Fumitaka Abe, Fumitaka Abe, Satoshi Itami, Satoshi Itami, Tohru Satoh, Tohru Satoh, Tadashi Matsuda, Tadashi Matsuda, } "Double Winged LD Beam Scanning System For Computer Graphics", Proc. SPIE 0457, Advances in Display Technology IV, (14 May 1984); doi: 10.1117/12.939400; https://doi.org/10.1117/12.939400

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