Flying spot scanner with runout correction

Details Flying spot scanner with runout correction Flying spot scanner with runout correction

1975-10-28

1977-08-02

Konick, Bernard

Facsimile and static presentation processing

Facsimile

Recording apparatus

358293, 358206, 350 7, H04N 576, H04N 104

Patent

active

040400964

ABSTRACT:
A flying spot scanning system is provided by utilizing reflected light from a multifaceted rotating polygon which is then directed to the scanned medium. A light source illuminates a portion of the mirrored sides of the polygon during each scanning cycle, to provide a desired sequence of spot scanning. In each scanning cycle, information is transmitted to the scanned medium by modulating the light from the light source in accordance with a video signal. An optical convolution of elements is selected in combination with the light source to assure a uniform spot size throughout the scan width on the scanned medium. One of these elements is a cylindrical lens placed in the optical path between the polygon and the scanned medium for allowing a wide variance in runout tolerance of the scanning system.

REFERENCES:
patent: 1406445 (1922-02-01), Culver
patent: 2258311 (1941-10-01), Adams
patent: 2898176 (1959-08-01), McNaney
patent: 2976362 (1961-03-01), Stamps
patent: 3005916 (1961-10-01), Lentze
patent: 3574469 (1971-04-01), Emerson
patent: 3675016 (1972-07-01), Blaisdell
patent: 3750189 (1973-07-01), Fleischer
patent: 3758187 (1973-09-01), Thomas
patent: 3787107 (1974-01-01), Sick
"Laser Raster Scanner"; by Latta; IBM Tech. Disc. Bulletin; vol. 13, No. 12, May, 1971, pp. 3879-3880.

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