Graphics Programs Reference
In-Depth Information
printing. This slider can also be useful to remove the effect of black
“peppering,” sometimes seen with ink-jet printers using CMYK output
profiles. The default is 100 percent and lowering this slider would
produce the effect of using less black ink for highly saturated images. This
is much like the opposite of GCR. That is, black ink is reduced in satu-
rated colors to be replaced with more CMY inks as seen in Fig. 7-7.
Fig. 7-7
The effect of the
Black Slider in
ProfileMaker Pro is seen
here on the black channel
of two separations. One
separation is made using
the slider at 100% and the
other is set to 0%. Notice
that saturated colors like
the pink outfit on the
woman has more black ink
used when the slider is set
to 100%. Lowering the
slider removes black by
adding more CMY inks to
the other channels. The
fish image is used to
illustrate the effect and
matches the behavior of
the Printer Test File image.
