User`s manual

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The printer also can be set to turn off automatically mode by
T5 Setting Tools. In turn off automatically mode, the printer
will power off if without data sent in within 5 minutes.
3.4.2 Paper End Alarming
When the paper is run out, the buzzer of the printer will ring 2
times, informs the user to load paper.
3.4.3 Black Mark
If user uses ready printing black mark to localize the receipt,
please be sure to abide by the following black mark ready
printing regulation when print the black mark, otherwise the
black mark can’t be recognized by the printer. The black
mark ready printing regulation:
Print position: as the following figure shows, the default black
mark is at the edge of left side. (You can change to right side
by using T5 Setting Tools.
Width range: ≥18mm
Height range: 4mm≤height≤6mm
Reflectivity to infrared ray: <10% (the reflectivity of the other
parts of the paper black mark width to infrared ray >65%)