Tone reproduction curve systems and methods

Details Tone reproduction curve systems and methods Tone reproduction curve systems and methods

2007-07-03

2007-07-03

Brase, Sandra L. (Department: 2852)

Electrophotography

Control of electrophotography process

Of plural processes

Reexamination Certificate

active

11120783

ABSTRACT:
In-situ measurements are made by a toner area coverage sensor on test patches from a single control dot screen developed on a cleanable surface and are observed by a photoreceptor. The density of patches for other dot screens is estimated from the measured density of the control dot screen error of each measured patch by using a scaling factor, which is different for each separation and patchy density. This error is then added to the target tone reproduction curve (TRC) for each non-control dot screen to give an estimated density for each of the other dot screens. The TRC are then developed/updated using the estimated patch densities for each of the other dot screens. This substantially reduces the amount of toner and processing resources utilized.

REFERENCES:
patent: 6035152 (2000-03-01), Craig et al.
patent: 6556793 (2003-04-01), Nakamura
patent: 6694109 (2004-02-01), Donaldson et al.
patent: 6697582 (2004-02-01), Scheuer
patent: 2004/0165199 (2004-08-01), Klassen et al.

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