One-Dimensional, Two-Dimensional, and Spot-Color Management and Control Methods - Control of Color Imaging Systems: Analysis and Design - page 451

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FIGURE 8.17 Yellow gray balanced TRC for pole-placement design.

FIGURE 8.18 Cyan gray-balanced TRC with highlight (shaded lower left region) and
shadow (shaded upper right region) regions.

deposit average quantities of toner, but not small quantities. Hence, particularly
electrophotographic printers require overcompensation in the highlights due to lack
of development. The contribution of the paper to the sensing measurements is larger
in a highlight region, introducing a noise factor not as dominant in typical measure-
ments. As such, the highlight region of most TRCs has low quality because the
calibration data tend to be low quality.