How To Create Custom Vacuum Zones - Oce Arizona 550 GT User Manual

How to Create Custom Vacuum Zones

Introduction
A fabricated aluminum overlay sheet placed on the surface of the printer table is used to
create a vacuum field that is divided into zones. When the printer is installed, a single
zone equal to the maximum media size is available. Vacuum zones can be configured in
the field to meet specific customer requirements for media sizes. This section describes
the procedure to re-configure the vacuum overlay sheet to use custom zones. These rec-
ommended zones shown below are either in Metric or Imperial dimensions according to
operator preference.
The vacuum control handles are used with the custom vacuum zones. When you create
custom zones the three control valves control what zones will have vacuum applied when
the table vacuum pump is turned on. The left handle controls the Left zone, the middle
controls the Top zone and the right controls the Right zone. The vacuum zones are open
when the handles are vertical. To close a zone, turn the control handle a quarter turn
clockwise.
Note:
The 550XT does not have vacuum relief valves to adjust the intensity of the vacuum,
so it is either On or Off. Because of this lack of relief valves, it is not possible to create
custom zones as you can with the other models. However, the table has three pre-set
vacuum zones that are described in Chapter 6.
Purpose
The vacuum system holds the media in place. The three suggested custom zones described
in this section and illustrated below, are arranged to accommodate common media dimen-
sions. If you create custom zones, they can be turned off or on according to where media
is placed. If you have additional aluminum overlays you can quickly change the configu-
ration of the vacuum zones by placing another overlay on the table.
When to do
If the suggested custom zones on your printer do not match with media sizes that you
use frequently, it is possible to change the layout of the zones to suit your particular
purpose. This helps to minimize the use of tape and placement of media that will not be
printed on when the media size does not match exactly with the zone size.
How to Create Custom Vacuum Zones
Chapter 5 - How to Operate the Océ Arizona 550 GT 89