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Datamax-O'Neil MP Compact4_MP Compact4 Mobile Mark II Operators Manual User Manual

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To accommodate a variety of media types, printhead pressure is adjustable. This pressure is factory set to

work with most media types, so this adjustment should only be performed after attempting to improve

print quality through increasing the printer’s “Heat” setting or decreasing the “Print Speed” setting.

When adjusting, use only the minimum pressure necessary for better imaging. To adjust:

1. Lower the Front Panel.

2. Load at least 4” (102mm) wide media, see Section 2.3.

3. Print a test label from the host. Choose a label format with content that spans the width of the label.


4. Unlatch the printhead. Turn the Pressure Adjustment Screws counter-clockwise to increase the applied

pressure or clockwise to decrease it. Make equal adjustments to each screw to achieve even print

contrast across the media.



Pressure Adjustment
Screws


5. Re-latch the printhead and repeat the test print. Repeat step 4 until an acceptable print has been

achieved.


When using narrow media it is necessary to reduce the pressure on the outer (right) Pressure

Adjustment Screw and increase the pressure on the inner (left) Pressure Adjustment Screw. This will

prevent damage to the exposed areas of the printhead and platen roller.

Excessive pressure can reduce the service life of the printhead and platen roller, while unequal
pressure may cause faded print and label tracking problems.