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Chapter 4 Printer Control Menu
Unidirectional
The Unidirectional feature affects both print quality and p rinting speed. By
setting this feature, you can configure the printer to pri nt in both directions of
the shuttle sweep (bidirectional), or to print in one direc tion 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 e nhances the vertical
alignment of dots and produces cleaner, sharper bar codes and text. Ch oices
include the following:
•Disable. The default. The printer will print all data in both directions of the
shuttle sweep (bidirectional printing). This choice p roduces higher printing
speed.
•Enable. The printer will print all data in only one dir ection of the shuttle
sweep (unidirectional printing). This choice produce s 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 printi ng.
•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 enabl ing this parameter,
you must set the forms length to match the physical distanc e between
perforations.
Slow Paper Slew
This parameter affects the speed at which paper advances in to the stacking
area of the printer. The speed may be slowed down by enabling th is feature.
•Disable. The default. The printer will slew and stack paper at m aximum
speed.
•Enable. Causes the paper to stack at a slower pace. This e nsures 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.