Hitachi UX Twin Nozzle - Warning Conditions (Printing Continuously Performed)

6-65
6.4 Warning conditions (printing continuously performed)
6.4.1 Excitation V-ref. Review, Excitation V-ref. Review 2
6.4.2 Viscosity Reading Instability
Excitation V-ref. Review
Resume the operation.
Readjust the excitation setup of nozzle1 and nozzle2.
Excitation V-ref. Review 2
Resume the operation.
Readjust the excitation setup of nozzle1 and nozzle2.
Viscosity Reading
Instability
Resume the
operation.
Is it normally measured? *1
Yes
No
Perform viscometer
calibration
Perform the viscometer
operation test on the
Circulation system control
screen.
Replace the viscometer filter.
Disassemble and clean the
viscometer.
Replace the viscometer.*2
Is it normally measured?
Is it normally measured?
Yes
Yes
No
No
Viscosity Reading
Instability
during installation
(calibration)
Re-execute viscometer
calibration (2-3 times).
Does calibration finish
normally?
No
Yes
Press [OK], then the
coefficient is determined
(*1): The Viscosity measurement during
IJP operation is conducted every
15minutes just before the ink
replenishment. When the viscosity
values measured are instable, the
ink is replenished by dot counts
but NOT by the viscosity
measurement result. If this ink
replenishment by dot counts is
made three times in a row, the
warning of “Viscosity Reading
Instability” will be indicated. After
this warning indication, the
viscosity measurement is
conducted every 15minutes
however the ink is replenished by
dot counts until the ink viscosity
returns to a stable condition.
(*2): When you disassemble and clean
or replace the Viscometer, refer
to “4. 12 Troubleshooting when
Fault Occurs in Viscometer”.