What parameters does ^JM take?

n — A native density (24, 12, 8 or 6 dots/mm), B half (12, 6, 4 or 3 dots/mm)

^JM — Set Dots per Millimeter

Halves the print density (dots per millimetre), which doubles the size of the printed format.

Syntax^JMn

In Labelixa's previewNot applied in the preview (ZPL1002)

What it does

^JMB turns 24 dots/mm into 12, 12 into 6, 8 into 4 and 6 into 3. Every coordinate is then counted in the larger dots, so the same format prints twice as large and ^FO positions move with it. ^JMA keeps the printhead's native density.

It must come before the first ^FS of the format and stays in effect afterwards. With ^JMB the UPS MaxiCode barcode is out of specification.

In the preview

This command changes the printed label, but Labelixa's preview does not apply it yet. The linter reports it as ZPL1002, so you know the preview and the print will differ.

Example

^XA
^JMB
^FO50,50^A0N,30,30^FDHALF DENSITY^FS
^XZ

The text prints at twice the size it would at the printer's native density.

Parameters

Parameter	Description	Values	Default
`n`	A native density (24, 12, 8 or 6 dots/mm), B half (12, 6, 4 or 3 dots/mm)	`A · B`	`A`

Source

Zebra ZPL II Programming Guide (P1134473-11EN Rev A), page 269. Zebra guide page →

^MU · ^FO · ^BD

ZPL commands list and reference →

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