Fuji Xerox ApeosPort Print C5570 Reference Manual page 191

Color Sample
4.
Enter the variance in the [Margin] field corresponding to the gradation correction chart.
5.
In a similar manner, also read and enter the variance of the same color with two other densities (medium
density/high density).
6.
Repeat steps 1 through 5 to read and enter the variance for the remaining YMCK colors in the same manner.
For the example on the left, density of the
Calibration Chart close to the Color Sample
is at the second position in the negative
direction from the central position or density
A, therefore, the difference is <-2>.
A
"-2"
"-1"
8.2 Image Quality
191