Beam deflecting for enhanced laser printer scanning

Details Beam deflecting for enhanced laser printer scanning Beam deflecting for enhanced laser printer scanning

1996-08-26

1999-07-27

Le, N.

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

347239, 347243, 347260, 347261, B41J 247

Patent

active

059298928

ABSTRACT:
A system and method of providing a periodic trajectory scan path for a laser beam across a photoconductive surface in a laser printer. A preferred embodiment of the periodic trajectory for a system with a two-axis deflector includes a multiple-frequency omega wave trajectory for providing a substantially rectangular grid of available dot locations for selective laser beam pulsing. As such, a plurality of generally linear rows of dots are completed in a single scan pass of the laser beam across the surface. The periodic trajectory is provided by deflecting the laser beam with an optical beam deflector, such as an electro-optic deflector, placed between the laser and the rotating polygon scanning mirror. A preferred embodiment of the beam deflector includes a folded optical path.

REFERENCES:
patent: 3573449 (1971-04-01), Maloney
patent: 4936665 (1990-06-01), Whitney
patent: 4989941 (1991-02-01), Soref
patent: 5424780 (1995-06-01), Cooper
patent: 5592207 (1997-01-01), Kobayashi et al.

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