Plain English

Sets the print darkness (heat intensity) from 0 to 30. Higher values make darker prints but wear the printhead faster. The tilde version of ^MD.

When to use

When adjusting print quality — too light means faded prints, too dark means smeared prints or reduced head life.

Syntax

~SDnn

Parameters

ParameterDescription
nnDarkness value: 0 (lightest) to 30 (darkest)

Example

~SD15

Set darkness to 15 (medium)

Try it in the playground View all ZPL commands