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:Anapurna H3200i LED Advanced Operator Manual (v1.0)
6 Media loading
6.1 Media transport system
The printer has a transport belt mechanism to move the media in the feed direction under the print head while it
is held securely on the belt by vacuum pressure from below. The print area has four individually controllable vac-
uum compartments as shown by the yellow arrows on the shuttle beam. The suction in each compartment is
turned on or off using the four air valves located at the rear of the printer (see 6.2).
The hybrid media transport belt is designed to feed a wide range of rigid and flexible materials into the printer.
• The only restrictions on rigid media are those of maximum width and height, 3200 mm and 45 mm respec-
tively.
• Roll media (e.g. plastic film, paper or cloth) is placed on axles.
Top view printer (vacuum compartments)
Parts involved
• Vacuum table with 4 independent vacuum compartments
• 4 sets of valves and gauges
• Media transport belt
• Vacuum unit to provide the vacuum pressure
• Vacuum system controller (called an inverter)
• Motor driven unwinder and rewinder system
6.2 Vacuum Pressure Settings
Transport vacuum valves
When a compartment is not fully covered the uncovered area
lets air flow around the media, reducing the effect of the vac-
uum.
Depending on the size and/or type of media, the vacuum
valves need to be adjusted to obtain an equal vacuum over
the covered compartments. The applied vacuum is read on
the round gauges at the back of the printer.
Close the valve(s) of uncovered areas.
The vacuum controller on the front of the printer:
• sets the nominal required vacuum to hold the media
on the media transport belt;
• measures the vacuum generated in each compart-
ment;
• compensates for changes as the media moves over
the vacuum table.
The vacuum pressure is set using the numeric control and is
adjustable between 0 and 130.
Full coverage requires a low vacuum setting!
• Full coverage: 5 - 10 mbar.
• other: 15 - 30 mbar.
Vacuum control, fourth controller (far right)
