Device and apparatus for high speed tracking in a raster output

Details Device and apparatus for high speed tracking in a raster output Device and apparatus for high speed tracking in a raster output

1992-09-25

1994-11-08

Fuller, Benjamin R.

Recorders

Printing, dotting, or punching marker

Ink transfer support or moving means

359 40, G01D 942

Patent

active

053631269

ABSTRACT:
An optical element for laser beam deflection in a raster output scanner (ROS) of an electrophotographic printer. The optical element includes a chamber containing a ferroelectric liquid crystal material having a variable index of refraction as a function of voltage applied thereacross. The ROS includes a control system coupled to a voltage source for applying a voltage across the optical element to control the variable index thereof in conjunction with the rotation of the polygon, facet alignment errors and/or belt motion errors to provide high speed tracking of a light beam.

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