Print Head Pressure - SATO S8412 Operator's Manual

PRINT HEAD PRESSURE

Print head pressure is the equalization of pressure against the platen roller from one end to the opposite. If the print
head balance is out of adjustment, the printed image will be darker on one side of the label than the other and the
media will be prone to travel in the direction of least resistance.
The adjustment of print head pressure is achieved through the adjustment of a four-position dial located within the
print assembly just above the print head. The end of the dial is inumerated 1 through 4.
To adjust the pressure, begin test printing and slightly loosen set screw (1, Figure 6-6). Then rotate dial (2) to each
position and monitor printing characteristics for each position. Optimum pressure is achieved by the disappearance
or reduction of prevailing negative print characteristics. Retighten set screw (1) when the best dial position is
chosen.
NOTE: For reference purposes, the embossed number on the dial's end that is
positioned closest to the print head is the dial setting.
NOTE: If the dial is too difficult to manually adjust using fingertips. A slotted
screwdriver may be inserted into its end for easier dial rotation.
ATTENTION:
require adjustment. Following print head alignment, the print head balance
may require a different setting and the procedure repeated.
POSITION
Pressure Inside
2.5kg
Label Width 30mm to 128mm
Label Thickness 0.05mm to 0.20mm
S8400 Series Operator Manual
Unit 6: Maintenance
If some print problems persist, the print head alignment may
Figure 6-6, Print Head Pressure Adjustment
1 2
Outside Inside
2.5kg 3.0kg
30mm to 128mm
0.20mm to 0.31mm
Print Assembly
3
Outside Inside
3.0kg 2.5kg
10mm to 30mm
0.05mm to 0.20mm
6-8
5
5
Print Head
4
Outside Inside Outside
2.5kg 3.0kg
10mm to 30mm
0.20mm to 0.31mm
PN: 9001160B
2.0kg