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6.2
Printhead Troubleshooting
Occasionally, print quality is affected by minor problems that arise with the printhead.
The following table provides a list of common printhead issues, their symptoms, and
solutions:
Problem
Problem Causes
Solution
Air and air bubbles
causing
bloacked nozzles
Appear as missing groups of
adjacent drops but the shape
is often rounded or irregular
Cured by recirculation,
priming or cycles of
depriming and repriming.
Often the bubbles will go
away with time
Debris on printhead
Shows up as regularly
missing or misdirected
nozzles, or as ink color
mixing
Cured by automatic servicing
or manual wiping
Ink mixing
Appears as mixed or muddy
colors. Can be caused by ink
flooding, air in the printhead,
or a dirty printhead
Cured by automated serving
or manual wiping
Electrical failure or
poor electrical
connection
Results in no print or crisp
blocks of missing drops
usually conforming to the
printhead die boundaries
Cured by reseating the
printhead or replacing the
printhead
