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different thickness of media. Turning the knobs adjusts the print head’s burn line
forward or backward as it relates to the platen roller.
Print head burn line adjustment knob
The
print head adjustment knobs
are used to fine tune print quality for different
thickness of media. Turning the knobs adjusts the print head’s burn line forward
or backward as it relates to the platen roller.
Caution: incorrectly adjusting these knobs can lead to poor print quality
and may cause damage to the printer. Proceed with caution.
The print head burn line default is set for general purpose printing media (plain
paper and paper thickness less than 0.20mm). The adjustment knobs default is
screwed to the end of
thread.
Poor print quality when using paper thicker than 0.20mm may be due to the print
head burn line not being at the optimized position. To correct this, increase the
head pressure and adjust the knobs counter-clockwise to move print head burn
line forward then print again. Continue to adjust and test print as necessary until
the image is clear.
Note: The print head moves 0.7 mm for each 360 degree turn.
Figure 4. Print head adjustment knobs
***print head adjustment knobs
