Intermec EasyCoder 501XP Programmer's Reference Manual page 62

Chapter 5 — Feeding & Printing Instructions
Reprinting a Lost Label
An out-of-paper, an out-of-ribbon condition, or a media jam may cause
serious trouble when printing batches of labels, especially with consecu-
tive numbering.
If the <Print> key is enabled (see
identical copy of the last label in the print job can be reprinted simply by
pressing the <Print> key on the printer's front. However, if for example
the printer runs out of media somewhere in the middle of a batch, a label
can be lost.
The Direct Protocol detects if the bitmap pattern (print image), that
represents all fi elds in the label layout and stored in the print buffer, was
successfully printed or not. If not, the print image will automatically be
reprinted as soon as the error has been fi xed, for example by loading a
new roll of media or ribbon.
However, if the print image is shorter than the physical label and an error
occurs after the print image has been printed but before the end of the
physical label, the Direct Protocol still assumes that the label was success-
fully printed and will not reprint it.
A work-around is to make the print image that same size (length) as the
physical label by adding a fi eld close to the end of the label. The fi eld can
be made "invisible" by using a single space character or by using a line,
box, image, or text in combination with the
Chapter 4.
Note: After an error in a batch print job, check for possible
duplicate labels.
Prevent Reprinting
It is possible to prevent reprinting of a print job using the following
instruction:
REPRINT ON|OFF
ON
OFF
56 Intermec Direct Protocol v7.80 Programmer's Reference Manual
PRINT KEY ON/OFF
enables reprinting (default)
disables reprinting
in Chapter 6.9), an
instruction, see
INVIMAGE