Adjusting The Printing Mechanism; Preparing The Printer For Adjustment - CAB Hermes C Series Service Manual

5 Adjustments
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5.4

Adjusting the Printing Mechanism

Major adjustment of the printing mechanism beyond format-based settings is only required if the printhead assembly
has been removed or parts in this area have been replaced. Excluded from this is the replacement of the printhead,
after which readjustment is generally not required.
The following print quality imperfections may indicate maladjustment of the printing mechanism:
• Print image too light
• Print image is spotty
• Print image lighter on one side
• Horizontal lines not parallel to the horizontal label edges
• Clear lateral drift of the transfer ribbon
i
Notice!
Print image errors can also arise from wrinkling of the transfer ribbon. This is why you should check the
transfer ribbon feed path and the head locking system for correct adjustment before making adjustments to
the printing mechanism  Operator's Manual.
i
Notice!
The adjustment at both print units can be done in the same manner.
Adjustment of the printing mechanism comprises the following procedures in the order specified:
1. Prepare the label printer for adjustment  5.4.1 on page 24.
2. Adjust the position of the printhead  5.4.2 on page 25.
3. Adjust the printhead pressure  5.4.3 on page 26.
4. Adjust the transfer ribbon feed path  5.4.4 on page 27.
5. Perform a final test  5.4.5 on page 27.
5.4.1

Preparing the Printer for Adjustment

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Figure 25
1. Check the setting of the ribbon savers  5.7 on page 30.
2. Load transfer ribbon at the print unit to be adjusted and labels which extend across the entire printing width.
3. In the printer configuration, set the Heat level parameter to -5 and the Print speed parameter to 100 mm/s.
4. Loosen the screw (5) and remove the antistatic brush (6).
5. Move the transfer ribbon deflection to the central position (1) with the screw (2).
6. Loosen screws (3) and position the plungers (7) in such a way that the adjustment screws are accessible through
the holes (4) of the square axis.
7. Loosen the screw (8) for the printhead bowing with an Allen key (1.5 mm) and turn it counterclockwise until turning
becomes perceptibly easier. This should occur after a maximum of a half a rotation.
8. Continue with the adjustment of the printhead position  5.4.2 on page 25.
Preparing the printer for adjustment
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