High Ink Concentration; Low Ink Concentration - Hitachi IJ PH Service Manual

6.4.10 High Ink Concentration

High Ink
Concentration
Check the printing quality.
Is the printing quality
normal?
Yes
Operate the printer for an hour
or so, and check the ink
viscosity.
Has the viscosity increased?
No
Resume the
operation.

6.4.11 Low Ink Concentration

Low Ink Concentration
Check the printing quality.
Is the printing quality
normal?
Yes
Operate the printer for an hour
or so, and check the ink
viscosity.
Has the viscosity decreased?
No
Resume the
operation.
No
Yes
Replace the ink in the ink reservoir.
No
Yes
Replace the ink in the ink reservoir.
6-41
Replace the ink.
Replace the ink.