Canon Arizona 1300 Series User Manual page 69

[22] Closing a vacuum zone
Masking the Vacuum Table
If your media does not cover all of the vacuum zone, you must mask the area around the media
to eliminate vacuum loss. Use scrap media or material that is equal to or less than the thickness
of the media to mask the table. You can tell when the vacuum table is fully sealed when the
vacuum gauge reads 20"Hg.
Vacuum Table Foot Pedal
The vacuum foot pedal toggles the table vacuum on or off. It helps the operator to secure the
media on the vacuum table since it allows hands-free operation. The vacuum must be turned on
prior to starting a print, and the vacuum cannot be turned off until a print is completed.
Vacuum Gauge
The vacuum gauge is located on the table.
NOTE
Use the vacuum gauge to determine if a zone is properly masked. When the active zone is
properly masked, the gauge will read at 20"Hg (68 kPa) or higher. Small leaks can reduce this
number and therefore the efficiency of the vacuum. Porous media can also degrade the vacuum
effect.
If the vacuum gauge for an active zone reads below 10"Hg (34 kPa) and you have ensured that
the area is properly masked and taped off, you may have a leak in the vacuum system. Place a
service call only if you determine that the zone is correctly masked and the gauge reads
consistently low.
How to Maintain the Vacuum Overlay Sheet
If ink build-up occurs on the overlay sheet, remove the ink. If it is not removed, the print gap can
be affected and this may affect the vacuum table's ability to secure the media properly. To
remove ink, we recommend that you use a paint scraper containing a straight edge razor blade.
Refer to the Maintenance section for more detailed instructions.
The Table Vacuum System
Chapter 5 - Operate the Printer 69