Paxar Monarch 9850 - Manual (Page 45)

Do not use backfeed (normal or extended) with supplies less than
0.75 inches. We recommend using 0.5-inch gap supplies in peel
mode when backfeed is disabled. Not all printers support peel
mode.
The 9403 printer does not support the backfeed packet. The
dispense position and backfeed distance are optional parameters
and do not have to be specified. However, they allow for greater
precision when positioning the supply.
Syntax { I,G,action,dis_pos,bkfd_dis p }
G1. G Backfeed Control Packet
G2. action Action. Options:
0 disable backfeed (default)
1 enable backfeed (use on any printer without a knife)
2 enable extended backfeed (use on any printer with
a knife)
If using one-inch RFID Supplies, see "One-Inch Feed Length
Guidelines" in Chapter 3 for more information about backfeed.
G3. dis_pos Dispense Position. Adjusts the stopping point of the label. 50
to 200 dots (default 65 dots). Use 95 dots for the printer
applicator.
G4. bkfd_dis Backfeed Distance. Amount to move label backwards. 10 to
200 dots (default 65 dots). Use 95 dots for the printer
applicator. This distance can not be greater than the dispense
position.
The backfeed distance should equal the dispense position.
An exception is if you are tearing instead of peeling. Then,
the backfeed distance must be 30 dots (.150 inches) less than
the dispense position. However, you will have a 30 dot
non-print zone on your supply. The 30-dot difference
accounts for improper tearing of butt cut supplies, because
you do not want any exposed adhesive under the printhead.
Example { I,G,2 p }
Enables extended backfeed and cuts any tags remaining between
the knife and printhead and moves the supply backwards so the
next tag is underneath the printhead. Using cut mode 4, you do
not have to press FEED (FEED/CUT) to cut the last tag.
Configuring the Printer 2-23