Five Adjacent Nozzles Not Firing; Black Head Poorly Positioned - Oce Arizona T220 User Manual

Maintaining Print Quality |
Figure 17 shows that 5 adjacent black nozzles are not firing at all. This will introduce
banding in an image. This is caused by dry ink or another contaminant in or around the
nozzle.
This is fixed by a High Purge on the individual color. If necessary, follow this by
swabbing the affected head and finally by syringing the affected head until the 'curtain'
of solvent exiting the head is continuous – no gaps or spray in the wrong direction.
Figure 17 Five Adjacent Nozzles Not Firing
Figure 18 shows that the black head is poorly position in the inner carriage. The head is
overlapping with its neighbor on the left and there is a gap between it and the head on
the right. Also there appears to be a delay before the head fires relative to its neighboring
heads, which would indicate that the head is not pushed down fully in its mounting hole.
Figure 18 Black Head Poorly Positioned
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