Method and control system architecture for controlling tone reproduction in a printing device
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United States of America Patent
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Nov 28, 1995
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N/A
app pub date -
Feb 24, 1993
filing date -
Feb 24, 1993
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Abstract
A controls system architecture for an image output terminal (IOT) has a hierarchical structure which isolates subsystem controls for purposes of efficient algorithm design, analysis and implementation. The architecture is preferably divided into three levels and has a controls supervisor which provides subsystem isolation functions and reliability assurance functions. The architecture improves image quality of IOT outputs by controlling the operation of the IOT to ensure that a toner reproduction curve of an output image matches a tone reproduction curve of an input image, despite several uncontrollable variables which change the tone reproduction curve of the output image.
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