Hitachi IJ PH Service Manual page 203

Eject Ink （Goes to Ready）
Sequence Name
Operation [Start up] - [Eject ink]
Remarks Start sequence
−
Step 1 2
Interval Pre-heating
Outline
Time [sec.]
1 15
PH-D
MV1: Supply
MV2: Replenishment
MV3: Recovery
MV4: Agitation
MV5: Circulation
MV6: Pressure relief
MV7: Makeup ink
MV8: Cleaning
MV9: Shutoff
Pump ON ON
Sequence Name Eject Ink （Goes to Standby）
Operation [Control] - [Eject ink] or [Circulation Control] - [Eject ink]
Remarks Start sequence （For mentenance）
Step − 1 2
Interval Pre-heating
Outline
Time [sec.]
PH-D 1 15
MV1: Supply
MV2: Replenishment
MV3: Recovery
MV4: Agitation
MV5: Circulation
MV6: Pressure relief
MV7: Makeup ink
MV8: Cleaning
MV9: Shutoff
Pump ON ON
Normal Running
Sequence Name
−
Operation
Remarks Density control sequence
Step 1 2 3
Refresh ink Ink Viscosity
Outline
the visco- Measurement
5 times
Time [sec.] meter path
PH-D 120 5 10
MV1: Supply 3.ON 2.ON 2.ON
MV2: Replenishment
MV3: Recovery 4.ON 3.ON 3.ON
MV4: Agitation 2.ON 4.ON
MV5: Circulation
MV6: Pressure relief
MV7: Makeup ink
MV8: Cleaning
MV9: Shutoff 1.ON 1.ON 1.ON
MV10: Viscometer 4.ON
Pump ON ON ON
3 4 5 6 7
Refresh ink Pressurize Suck Eject Eject ink
in the unit supply path circulation makeup ink
path
5 5 1 0.5 1
2.ON 1.ON 3.ON 3.ON 3.ON
2.ON 4.ON 4.ON
3.ON 2.ON 2.ON 2.ON
1.ON
1.ON
1.ON
1.ON
ON ON ON ON ON
3 4 5 6 7
Refresh ink Pressurize Suck Eject ink Suck air in
in the unit supply path circulation the nozzle
path
5 5 1 1 5
2.ON 1.ON 3.ON 3.ON 3.ON
2.ON 4.ON 4.ON
3.ON 2.ON 2.ON 1.ON
1.ON 2.ON
1.ON
1.ON 5.ON
ON ON ON ON ON
4 5 6
Ink Makeup ink Interval
replenish- replenish-
ment ment
360s Max. 15s Max. 1800
1.ON 2.ON
1.ON
2.ON 3.ON 3.ON
2.ON
3.ON 4.ON 1.ON
ON ON ON
8 9 10 11 12
Suck air in Detect bent Suck air in Interval for Refresh ink
the nozzle beam the nozzle stable the MV2
pressure path
3 3 20 5 30
3.ON 3.ON 3.ON 2.ON
1.ON
4.ON 4.ON 4.ON 3.ON 2.ON
1.ON 2.ON 1.ON
2.ON 2.ON
5.ON 1.ON 5.ON 1.ON 3.ON
ON ON ON ON ON
8 9
Interval for Standby
stable
pressure
−
5
2.ON 2.ON
3.ON 3.ON
1.ON 1.ON
ON ON
13 14 15
Heating Detect the Ready
APH (High-
condition voltage ON)
Depends on the environ-
−
10
ment
2.ON 2.ON 2.ON
3.ON 3.ON 3.ON
1.ON 1.ON 1.ON
ON ON ON
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