SPRT
®
SP-TL31Thermal Label Printer User’s Manual
12
The black mark pre-print regulations are as below:
Printing Position: As the picture above, the black mark should be printed on the right edge of the
side of words
Width range: width≥7mm
Height range: 4mm≤height≤6mm
Reflectivity of infrared ray : <10% (infrared ray reflectivity of other parts of the black mark paper
is>65%)
HPS: It is the distance between edges of black mark and edges of print beginning position.
4.5mm≤Hps≤6.5mm
4.3 Cleaning and maintenance
The thermal printer mechanism needs regular maintenance, the methods are as follows:
1. Use a dusting brush to clean up the scraps and dust on paper roller.
2. Dip an appropriate amount of alcohol with a cotton swab, wipe the printer core heating film,
and remove impurities such as carbon deposits, dust and paper scraps. .
The above operations must be performed when the printer is powered off.
