~SDSet Darkness

What ~SD does

~SD sets the darkness level from 0 to 30, overriding the front-panel setting until power-cycled. Higher values darken the print; too high can smear or shorten printhead life.

Syntax

~SDa

Parameters

Example

~SD15

~SD is a control command — it can be sent on its own line, outside ^XA/^XZ.

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Notes & tips

• Range is 0 (lightest) to 30 (darkest).
• ^MD adjusts darkness relative to this within a format.

Related commands

• ^MD — Media Darkness
• ^PR — Print Rate

See the full ZPL command reference for all 92 documented commands.