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4-2 When to Calibrate
When to Calibrate
When to run Calibration Function
When printing a large group of print
jobs
AutoTune (page 4-4) Automatic jet maintenance during
extended printing periods.
When loading a new media (but not
when loading a new roll of the same
media)
Linearization (see documentation
for third-party RIP or HP RIP)
Linearization of colors.
Note: For maximum accuracy, the
photodiode must be cooled by its
fan before reading color patches. If
the left UV curing lamp has been on
for longer than 10 minutes, the pho-
todiode cooling fan runs for 12 min-
utes before taking readings;
otherwise the fan runs for 7.5 min-
utes. The control panel displays a
countdown timer while the photo-
diode is cooling.
Banding Media Feed (page 4-9) Calibrates the media advance.
Poor output quality (apparent mis-
registration of colors, banding)
Auto Calibrations (page 4-6) Calibrates the printhead positions
and inkjets. You can also run the
Manual Calibrations if necessary.
When printheads have been moved
or replaced
Auto Bidirectional (page 4-6) or
Manual Bidirectional (page 4-12)
Head calibrations. Run Manual
when calibrating transparent or
other media that the onboard digital
image sensor cannot calibrate.
If Auto Calibrations do not improve
print quality, or if printing on trans-
parent or other media that cannot
be detected by the printer
Manual Calibrations (
page 4-8)
Aligns printheads, allows you to
map out specific inkjets. Not nor-
mally needed except when printing
on “invisible” media.