Hitachi IJ RX2 Service Manual page 237

6.5.12 Increase of dot missing
- "Dot missing" is a phenomenon in which some of
the dots comprising a character are lost.
Generally, missing of one per several thousand
dots is normal, but this may increase if the
following abnormal status continues:
(1) When equipment was in the ink ejecting status (standby status) but ink was
not ejected due to clogging of nozzle, etc. and equipment was left as was.
(2) Moisture, dust, etc. entered the ink.
If dot missing increases, perform the following troubleshooting, referring to the
instruction manual:
(1) Replace the ink filter
(2) Replace the ink
Deflecting
direction
6-58
Dot
missing