zpl.tools
CommandsControl reset

~JS - Change Backfeed Sequence

Controls when media backs up (rewinds) during printing

~JS - Change Backfeed Sequence

Overview

The ~JS command controls the backfeed sequence behavior for printers with various media handling modes (tear-off, peel-off, cutter, rewind). Allows programming when media backs up relative to printing and cutting operations.

Syntax

~JS[mode]

Parameters

  • mode = Backfeed sequence mode

Description

  • Controls media backfeed timing
  • Affects cutter/applicator operation
  • Optimizes media handling
  • Mode-dependent behavior

Common Modes

ModeEffect
ABackfeed after printing
BNo backfeed after print
NNormal mode

Examples

Normal Backfeed

~JSA

Disable Backfeed

~JSB

Usage Notes

  • Effect temporary (until power-off)
  • Overrides front panel setting
  • Mode-dependent on printer
  • Returns to front panel default on power-on
  • Not for Zebra STRIPE printers

Performance Impact

With Backfeed After

  • Extra time per label
  • Media positioned at tear bar
  • Operator removes label

Without Backfeed

  • Faster printing
  • No automatic repositioning
  • Manual label placement
  • Saves 1-2 seconds per label
  • ^MM - Print Mode
  • ^MF - Media Feed

See Also