Zebra Technologies S400 - Manual (Page 48)

40 Zebra S400 & S600 User’s Guide
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The toggle assembly presses the printhead against the ribbon (if used), the
media, and the platen.
The pressure applied by the toggle assembly may need to be increased or
reduced when different thicknesses or widths of media are used in the
printer.
NOTE: Before increasing toggle pressure to achieve darker print
darkness, perform the print quality adjustments.
Refer to Figure 23. Turn the two knurled toggle pressure adjust knobs (a)
on top of the toggle assembly to adjust the pressure. Turning clockwise
increases the pressure, and turning counterclockwise decreases the
pressure.
Always use the lowest toggle pressure necessary to provide the desired
print darkness on the label.
NOTE: When using media narrower than 4.5" wide (full media
width), reduce the pressure on the right hand toggle until print
quality is affected, then increase pressure just to the point where
good print quality is achieved. This reduces the wear on those
areas of the printhead and the platen where ribbon and media are
not present. (For very narrow media, zero pressure from the right
toggle may be required.)
Figure 23. Toggle Pressure Adjustment