Method and apparatus for interleaving raster scan lines in a mul

Details Method and apparatus for interleaving raster scan lines in a mul Method and apparatus for interleaving raster scan lines in a mul

1998-04-03

2000-03-14

Royer, William

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

B41J 2375, G01D 1514

Patent

active

060379626

ABSTRACT:
A laser printer produces an image of raster scan lines exhibiting a pitch distance p. The printer includes a photoreceptor and n laser sources, where n.gtoreq.2. First and second sets of laser sources, in one embodiment, produce plural optical beams which, when imaged on the photoreceptor, are separated by pitch distance p in the direction of movement of the photoreceptor. The first set and second sets of laser sources are separated by a distance S.sub.PR =c(1+qr)p, where: c=number of laser sources in each set, q=an integer, and r=number of rows of laser sources in both the first and second sets. The optical beams are modulated with pixel value data in accordance with a correspondence of image scan lines and positions of the optical beams on the photoreceptor. The photoreceptor is moved by a distance (q.multidot.c.multidot.r)p between scans. In such manner, an interleaving of the scan lines is achieved, which allows substantial separation of laser diodes on a laser diode chip.

REFERENCES:
patent: 5691759 (1997-11-01), Hanson

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