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Chapter 4 Printer Control Menu
Unidirectional
The Unidirectional feature affects both print quality and printing speed. By
setting this feature, you can configure the printer to print in both directions of
the shuttle sweep (bidirectional), or to print in one direction only
(unidirectional).
You might want to enable this feature when printing bar codes, high quality
text and graphics, or other printing that requires precise vertical alignment.
Although enabling this feature reduces print speed, it enhances the vertical
alignment of dots and produces cleaner, sharper bar codes and text. Choices
include the following:
• Disable. The default. The printer will print all data in both directions of the
shuttle sweep (bidirectional printing). This choice produces higher printing
speed.
• Enable. The printer will print all data in only one direction of the shuttle
sweep (unidirectional printing). This choice produces higher print quality.
PMD (Paper Motion Detection) Fault
• Enable. If a paper jam occurs, an audible alarm beeps, the LCD displays
the message, “CLEAR PAPER JAM,” and the printer stops printing.
• Disable. You should disable PMD only if special paper requires it.
Open Platen @ BOF (Bottom of Form)
Some special forms have perforation areas that are too thick to pass through
the print station. This parameter, when enabled, opens and closes the platen
when the perforations move across the platen. When enabling this parameter,
you must set the forms length to match the physical distance between
perforations.
Slow Paper Slew
This parameter affects the speed at which paper advances into the stacking
area of the printer. The speed may be slowed down by enabling this feature.
• Disable. The default. The printer will slew and stack paper at maximum
speed.
• Enable. Causes the paper to stack at a slower pace. This ensures that
certain forms will stack more neatly.
Caution Once PMD is disabled, paper motion is not monitored. If a paper jam
occurs, the printer ignores the condition and continues to print,
which can cause severe damage to the printer.