Applying ColorFlow curves and making tonal adjustments
If a printing plate has imaged and run on press, but the press is not
printing with the desired response, you may need to recreate the plate
using a different ColorFlow curve channel for one or more separations.
You can also make tonal adjustments to the assigned ColorFlow curve
channel. These adjustments, made on-the-fly from the Start Process
dialog box, are appended to the ColorFlow calibration curves and have
no effect on ColorFlow colorstores.
Applying a custom ColorFlow curve channel may be required if you
have a spot color that cannot use the default calibration curve—for
example, a metallic spot color. In such a situation, you can define a
custom curve channel in ColorFlow for Metallics. When a job is run,
selected spot color separations may be mapped to this (or another)
curve channel.
Tonal adjustments may be required because of mechanical problems
on the press or by lithographic problems caused by press ink/water
adjustments. Or else, a customer might simply want a color change. A
common solution is to remake one or more plates with an adjusted
calibration curve.
Note: This is different from the Plate Remake feature, where the primary purpose
is to produce an
identical
plate to replace a worn or broken plate, using the same
unique plate ID number, and the same settings and output device that were used
to output the original plate. Tonal adjustment is used when you need to produce a
different version of the plate.
1. In Prinergy Workshop, start a final output process.
2. In the Start Process dialog box, click the
Tonal Control
button.
The Tonal Control dialog box opens, automatically populated with
the information from the separations in the surfaces of the job
selected for output.
3. From
Separation
list, select the first separation that you want to
work on.
The
Curve Channel
list displays the ColorFlow curve channel that
has been assigned for the selected separation.
4. From the
Curve Channel
list, select a different curve channel, if
required.
The details of the curve channel that is selected are displayed in the
values and slider positions in the
Tonal Adjustments
section.
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Chapter 12—Outputs
