Knowledge Base

How do I calibrate my Zebra QL 320 / QL420 Thermal Printer?

QL printers are mobile / receipt-class units. Do not use the LP/TLP power-on dump or the ZP450 two-flash hold on a QL.

Use Zebra Setup Utilities (in the product installation kit / Setup Studio path) to set:

  1. Media type — these printers often ship set for bar sensing (black mark). If your stock has no black mark, change the media type before you print.
  2. Page height and width to match the roll.
  3. Network IP if you are using a networked QL, not USB.

Related: Load media (QL) · QL self-test · Setup Studio

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