Coordinitization of tone reproduction curve in terms of basis fu

Details Coordinitization of tone reproduction curve in terms of basis fu Coordinitization of tone reproduction curve in terms of basis fu

1996-11-21

1998-05-05

Pendegrass, Joan H.

Electrophotography

Control of electrophotography process

Of plural processes

G02G 1500

Patent

active

057490201

ABSTRACT:
Fundamental machine functions such as the Tone Reproduction Curve need to be divided into regions of smaller units so that each unit can be interrelated to some aspects of the internal machine process. A first step toward that is by decomposing measured TRC in terms of what are known as "orthogonal basis functions". Two significant applications for orthogonal basis functions may be extensive use in color controls to maintain color consistency for every page, every time and all the time. The use of basis functions might also lead to a new soft sensor for use in certain machines.

REFERENCES:
patent: 4780744 (1988-10-01), Porter et al.
patent: 4806980 (1989-02-01), Jamzadeh et al.
patent: 5450165 (1995-09-01), Henderson
patent: 5543896 (1996-08-01), Mestha

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