Variable wavelength discrete optical image bars having passively

Details Variable wavelength discrete optical image bars having passively Variable wavelength discrete optical image bars having passively

1988-12-23

1990-07-10

Arnold, Bruce Y.

Recorders

Record receiver deforming

346106, 350356, G01D 1514, G02F 101

Patent

active

049403141

ABSTRACT:
A variable wavelength discrete optical image bar sequentially generates a plurality of independent pixel patterns at different center wavelengths and a prism disperses those pixel patterns in accordance with their respective wavelengths. Lateral dispersion increases the spatial addressing capacity of the image bar.
In line printers and the like where a recording medium is exposed to successive pixel patterns as it is advancing in a cross-line direction with respect to a linear image bar, the wavelength dependent dispersion of the prism system may be employed to partially or completely compensate for such cross-line motion. This cross-line dispersion may be used independently to cause the image bar to overwrite successive pixel patterns, or it may be combined with the lateral dispersion of the pixel patterns to increase the spatial addressing capacity of the image bar.

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"Linear Led Array has 300 Pixel/in. Resolution", John Gosch, Electronics Week, Jan. 21, 1985, p. 21.

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