Adjusting The Printing Mechanism; Preparing The Printer For Adjustment - CAB XD4M/300 Service Manual

4 Adjustments
4.2

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
Notice!
i
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.
Notice!
i
It is only possible to adjust the print image with print material consisting label material and transfer ribbon
with a width over the full print area.
Adjustment of the printing mechanism comprises the following procedures in the order specified:
1. Prepare the label printer for adjustment  4.2.1 on page 21.
2. Adjust the position of the printhead  4.2.2 on page 22.
3. Adjust the printhead pressure  4.2.3 on page 23.
4. Adjust the transfer ribbon feed path  4.2.4 on page 24.
5. Perform a final test  4.2.5 on page 24.
4.2.1

Preparing the Printer for Adjustment

Fig.20 Printer preparing for adjustment
 3.1 on page 7
1. Load labels and transfer ribbon which extend across
1
the entire printing width.
2. In the printer configuration, set the Heat level
2
3
parameter to -5 and the Print speed parameter to
100 mm/s.
3. Move the transfer ribbon deflection to the central
4
position (1) with the screw (2).
4. Position the plungers (4) in such a way that the
adjustment screws are accessible through the holes
5
(3) of the square axis.
5. Loosen the screw (5) 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.
6. Continue with the adjustment of the printhead
position
 4.2.2 on page
22.
21