Color calibration method and apparatus

Facsimile and static presentation processing – Static presentation processing – Attribute control

Reexamination Certificate

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Details

C358S504000, C358S502000, C382S167000

Reexamination Certificate

active

07023584

ABSTRACT:
A method, includes depositing a first quantity of a first colorant corresponding to a first color value and a second quantity of a second colorant corresponding to a second color value on a region of media, determining a value related to a hue of the region, determining a difference between the value and a predetermined value. In addition, the method includes changing an association between the first color value and a first colorant quantity value, corresponding to the first quantity of the first colorant, according to the difference. An apparatus includes a spectral measurement device configured to generate output corresponding to a spectral content of light reflected from a region on media formed by depositing a first quantity of a first colorant and a second quantity of a second colorant onto the media. In addition, the apparatus includes a memory to store a plurality of color values and a corresponding plurality of first colorant quantity values. Furthermore, the apparatus includes a a processing device coupled to the memory and arranged to receive the output from the spectral measurement device and configured to determine a value related to a hue of the region using the output, configured to determine a difference between the value and a predetermined value, and configured to change an association between the plurality of color values and the plurality of first colorant quantity values according to the difference.

REFERENCES:
patent: 5510910 (1996-04-01), Bockman et al.
patent: 5978011 (1999-11-01), Jacob et al.
patent: 6023527 (2000-02-01), Narahara
patent: 6053609 (2000-04-01), Barton et al.
patent: 6062137 (2000-05-01), Guo et al.
patent: 6225974 (2001-05-01), Marsden et al.
patent: 2002/0180998 (2002-12-01), Wu

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