Techkon SpectroDens Manual page 46

After the measurement of the solid patch,
you can measure the %-patch, which you have
defined in the setup.
The dot gain is checked in regard to its con-
formity to the ISO-standards.
Concerning the midtone the spread will be
displayed additionally (CMY).
The deviation of the colors CMY is allowed
to reach ± 4 % in the middle-tone of 40 %
per ink .
But to avoid that the gray balance is distur-
bed too much, the spread limits the permit-
ted difference between the highest and the
lowest tonal value to 5 %.
Page 46 Manual TECHKON SpectroDens Chapter 2 – Measurement functions