Laser diode raster output scanners with interlaced scan lines

Incremental printing of symbolic information – Electric marking apparatus or processes – Electrostatic

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347233, G03G 1504

Patent

active

060783419

ABSTRACT:
A raster output scanner assembly having a first laser source for producing first and second laser beams, and a second laser source for producing third a fourth laser beams. The first and second laser beams are directed to a first rotating, multifaceted polygon while the third and fourth laser beams are directed to a second rotating, multifaceted polygon. The first polygon reflects the first and second laser beams onto a moving photoreceptor while the second polygon reflects the third and fourth laser beams onto the photoreceptor. The spots produced by the various laser beams are interlaced such that the scan line produced by the third laser beam is between the scan lines produced by the first and second laser beams, while the scan line produced by the fourth laser beam is adjacent the scan line produced by the second laser beam.

REFERENCES:
patent: 5243359 (1993-09-01), Fisli
patent: 5291223 (1994-03-01), Ogane et al.
patent: 5323026 (1994-06-01), Paoli
patent: 5323381 (1994-06-01), Takahashi et al.
patent: 5343224 (1994-08-01), Paoli
patent: 5589870 (1996-12-01), Curry et al.

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