Printer compensated for vibration-generated scan line errors

Details Printer compensated for vibration-generated scan line errors Printer compensated for vibration-generated scan line errors

1988-10-03

1989-11-28

Shaw, Clifford C.

Recorders

Printing, dotting, or punching marker

Ink transfer support or moving means

35016212, G01D 1514, G02B 2742

Patent

active

048840831

ABSTRACT:
A printing system employing a raster output scanning device is compensated for the effects of motion of the medium upon which an image is being printed. An amplitude transmittance spatial filter is positioned either in an exit pupil of the "slow scan" optics of the system or in the first Fourier transform plane of a lens positioned between the scanning device and the recording medium. Several preferred transmittance functions are provided.

REFERENCES:
patent: 3867571 (1975-02-01), Starkweather et al.
patent: 4108538 (1978-08-01), Felstead
patent: 4153336 (1979-05-01), Minami et al.
patent: 4305650 (1981-12-01), Knox
patent: 4389659 (1983-06-01), Sprague
patent: 4477175 (1984-10-01), Snelling
patent: 4647154 (1987-03-01), Birnbach et al.
patent: 4699497 (1987-10-01), Hinton et al.

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