X - R i t e e X a c t 2
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Density Trend
This function displays a bar graph of the density values of up to the last ten readings taken towards a particular
density color response. An overall average for that particular density color response is shown at the top for all
readings taken in the trend graph (even if more than 10 readings are taken).
G7 Graybalance
This function w
∆
L (Weighted Delta L) and w
∆
Ch (Weighted Delta Ch) along with the black channel density. IAn
indication is also provided for per-channel density adjustments to get closer to the gray balance standard.
Graybalance QC
This function provides C, M, and Y density values of the current sample and colorimetric data.
Hue Error & Grayness
Hue Error indicates the variation of a printed color from a theoretical pure color. Grayness indicates the
presence of gray in a color that makes it appear less saturated. Hue Error and Grayness are used to check for
color consistency throughout a press run.
Inks QC
This function shown the density response(s) of the current ink for the patch being measured. For solid inks, only
a single density will be shown. For an overprint density responses, each ink of the patch will be shown. It also
displays Delta Lab values, as well as the configured
∆
E value.
Metamerism
The phenomenon where two colors appear to match under one light source, yet do not match under different
light sources. Two such colors are called a metameric pair. Up to three Illuminant/observers can be compared to
the current Illuminant/observer setting (color setting). The default settings for all regions is A, F2 and F11.
Opacity
This function is used to determine how opaque a given ink or material is. It looks at how different the luminance
(Y from CIEXYZ) of a given sample changes when printed over a white or black substrate. Once the ink is
measured over both substrates, the opacity % result is provided (0 = completely transparent, 100% = completely
opaque).
Paper QC
This function is designed to check the appearance of the substrate when running a job. The options are: CIE
L*a*b* (as used by G7) and CIE L*C*h° (as used by PSO).
Printing Plate
This function is used to determine the dot area coverage of a tint or halftone patch on a printing plate. Make
sure the plate type (negative or positive) and Yule-Nielson factor that is used to calculate the physical dot area
coverage of your printing plate is set in the Ink Settings.
Reflectance Graph
This function displays a visual reflectance curve for measured data. Sample and standard are displayed with
different colors: sample in white, standard in blue.
Relative Color Strength
The relative color strength "DS" is a measure which compares the concentration of a color with the
concentration of a standard. DS is the ratio between the absolute color strength K/S of a sample and the
absolute color strength K/S of the standard color.
The relative color strength DS indicates the extent to which a color is concentrated in comparison with
the standard color. If for example DS = 50% means that the sample color is only half as concentrated as
the standard color.
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