Facsimile and static presentation processing – Facsimile – Facsimile measuring – testing – or calibrating
Reexamination Certificate
2008-08-04
2011-10-11
Williams, Kimberly A (Department: 2625)
Facsimile and static presentation processing
Facsimile
Facsimile measuring, testing, or calibrating
C358S504000, C358S505000, C399S072000
Reexamination Certificate
active
08035863
ABSTRACT:
Systems and methods are described that facilitate calibrating a print engine using calibration data sets generated at at least two different L* levels to provide additional calibration measurement resolution toward the darker end of the grayscale spectrum. For instance a first, light grey (e.g., 70-90L*) calibration strip is scanned at a first resolution (e.g., 70-90L*) to generate a first calibration data set, and a second darker grey (e.g., 30-50L*) calibration strip is scanned at high resolution (e.g., 100L*) to generate a second calibration data set. The first calibration data set is used to calibrate the print engine for high L* values (e.g., 50-100) and the second calibration data set is used to calibrate the print engine for low L* values (e.g., 0-50). Alternatively, a single calibration strip having a known L* value can be scanned once at the known L* value and again at a higher L* value (e.g., 100L*) to generate two calibration data sets, which are used to improve calibration resolution in the darker part of the spectrum.
REFERENCES:
patent: 4575124 (1986-03-01), Morrison
patent: 5060013 (1991-10-01), Spence
patent: 6008907 (1999-12-01), Vigneau et al.
patent: 6141120 (2000-10-01), Falk
patent: 6204873 (2001-03-01), Shimazaki
patent: 6268932 (2001-07-01), Lee et al.
patent: 6327047 (2001-12-01), Motamed
patent: 6366306 (2002-04-01), Fukuda
patent: 6575095 (2003-06-01), Mahy et al.
patent: 6658164 (2003-12-01), Irving et al.
patent: 6804027 (2004-10-01), Lee et al.
patent: 7212312 (2007-05-01), Motamed
patent: 7433064 (2008-10-01), Takahashi
patent: 2002/0033966 (2002-03-01), Lee et al.
patent: 2002/0054384 (2002-05-01), Motamed
patent: 2004/0046820 (2004-03-01), Wu et al.
patent: 2005/0219625 (2005-10-01), Koifman et al.
patent: 2006/0139705 (2006-06-01), Piatt et al.
patent: 2007/0024657 (2007-02-01), Zhang et al.
patent: 2007/0097405 (2007-05-01), Takahashi
patent: 2008/0100658 (2008-05-01), Bastani
patent: 2009/0153912 (2009-06-01), Ahmed et al.
patent: 2010/0027078 (2010-02-01), Bisset et al.
patent: 2010/0156921 (2010-06-01), McLennan et al.
Bisset Douglas
Wilsher Michael J.
Fay Sharpe LLP
Williams Kimberly A
Xerox Corporation
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