Hi-lite color ROS scan uniformity self correction architecture

Details Hi-lite color ROS scan uniformity self correction architecture Hi-lite color ROS scan uniformity self correction architecture

1992-11-18

2001-01-02

Pendegrass, Joan (Department: 2852)

Incremental printing of symbolic information

Electric marking apparatus or processes

Electrostatic

C347S246000, C358S001700

Utility Patent

active

06169559

ABSTRACT:

DESCRIPTION OF THE PREFERRED EMBODIMENT
This invention relates to a scan uniformity correction for a highlight Color raster output scanner.
It is an object of this invention to place the reference level of the pulses generated by amplitude modulation at the white level for the purpose of distinguishing the color pulses from the black pulses.
It is also, an object of this invention to use two independent power drivers to generate color pulses and black pulses.
It is further an object of this invention to correct the non-uniformity of the intensity of the light beam for the color level and for the white level independent of each other by raising the level of the color pulses and also by comparing the white level to a fixed reference level.


REFERENCES:
patent: 4990955 (1991-02-01), May et al.
patent: 5126761 (1992-06-01), Asada
patent: 5260799 (1993-11-01), Loce et al.

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