When to Calibrate, When to run Calibration Function

When to Calibrate

When to run	Calibration	Function

When printing a large group of print	AutoTune (page 4-4)	Automatic jet maintenance during
jobs		extended printing periods.

When loading a new media (but not	Linearization (see documentation	Linearization of colors.
when loading a new roll of the same	for third-party RIP or HP RIP)
media)		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-	Auto Calibrations (page 4-6)	Calibrates the printhead positions
registration of colors, banding)		and inkjets. You can also run the
		Manual Calibrations if necessary.

When printheads have been moved	Auto Bidirectional (page 4-6) or	Head calibrations. Run Manual
or replaced	Manual Bidirectional (page 4-12)	when calibrating transparent or
		other media that the onboard digital
		image sensor cannot calibrate.

If Auto Calibrations do not improve	Manual Calibrations (page 4-8)	Aligns printheads, allows you to
print quality, or if printing on trans-		map out specific inkjets. Not nor-
parent or other media that cannot		mally needed except when printing
be detected by the printer		on “invisible” media.

4-2	When to Calibrate