4-2 When to Calibrate
When to Calibrate The printer features several types of calibrations. Some should
be run routinely, others only when necessary:
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 (third-party RIP man-
ual or HP RIP documentation)
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 (roll-fed printing) Media Feed (page 4-21) 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 4-13)
Head calibration, run Manual when
calibrating transparent or other
media that the onboard digital
image sensor cannot calibrate.
