Ink Concentration Control; Gutter Cleaning - Hitachi RX Instruction Manual

1.7 Ink concentration control

(1) The ink is automatically controlled to maintain optimum concentration for printing.
*Depending on the type of ink, ink concentration control may not be performed by viscometer.
Refer to the handling guidance of each ink.
(2)If an error occurs in the viscometer which is used to control ink concentration, take care of the following points:
1 There are three types of viscometer errors:
"Viscometer Ink Temperature Sensor Fault", "Viscometer Reading Instability", and "Viscometer Reading
Out of Range".
2
When a "Viscometer Ink Temperature Sensor Fault" occurs, the unit will enter the fault stop state.
Re-start is possible by pressing the Clear , but the setting will be changed to the state in which ink
concentration control based on the measured result using the viscometer is not performed thereafter.
Once the setting of automatic concentration control is released, every time the power is turned on, the
following message will appear. Cancel the message by pressing the Close and be sure to inform your
nearest local distributor.
＝＝＝＝＝
The current settings have made ink concentration control
unavailable.
Solution Contact your local distributor.
Close
When "Viscometer Reading Instability" or "Viscometer Readings Out of Range" occurs, the unit will
3
not enter the fault stop state and printing can be continued. However, you should contact your nearest
local distributor for inspection.

1.8 Gutter cleaning

The IJ printer collects ink not used for printing from the gutter. At the same time, it sucks in atmospheric gas, dust,
and other matter from the air. If these substances are mixed with the ink in the gutter, undissolved
components in the ink or makeup may stick to the gutter. If the system is run for 24 consecutive hours without
automatic cleaning, these components will gradually accumulate in the gutter. This, together with the ink stream
coming into contact with it, may cause such errors as "an error stemming from a dirty head".
If any such component sticks to the gutter, immerse it in a solution of about 0.5% household dishwashing
detergent and clean it for about 10 minutes with an ultrasonic cleaner. The dirt can then be removed.
No Ink Concentration Control
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●Gutter cleaning 1-5