Oce Arizona T220, User Manual

Page: 61 / 79

Maintaining Print Quality |
3/10/03 5-51
The following are a series of examples of problems illustrated by the Diagnosis Stripe:
Figure 25 shows that one of the ‘C’ nozzles in the front black head has poor
directionality. This will be seen as slight overspray in the image. This is caused by dry
ink or another contaminant in or around the nozzle.
This problem 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 – i.e., no spray in the wrong direction
or gaps.
Figure 25 One Nozzle Not Firing Properly
Figure 26 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 26 Five Adjacent Nozzles Not Firing