Examples Of Printing Issues; Recovering From Nozzle Ejection Failure - MIMAKI TxF150-75 Operation Manual

Chapter 4 Maintenance

Examples of Printing Issues

The following are typical examples of head (nozzle) ejection failure caused by dust or other factors that affect printing. To
avoid using the nozzles in this state, check the nozzles regularly before and during printing. Nozzle status can be checked
by using the machine's test printing function.
1. Nozzle deflection

Recovering from nozzle ejection failure

If the machine is idle over an extended period, or under certain ambient temperatures, discharging from nozzles may
become unstable. The following nozzle recovery is available.
For symptoms in figures 1–4 above
1. Routine maintenance
 Clean the areas described in this manual.
2. Perform head cleaning (normal/hard)
 If the nozzle dropout does not recover after repeating the normal cleaning
several times, perform the hard cleaning.
3. Perform an ink filling (normal or hard)
 If it does not recover with cleaning, perform normal or hard cleaning.
4. Wash the head nozzles
 Perform head nozzle washing. Set the leaving time for head nozzle immer-
sion in maintenance liquid to one minute.
5. Wash the head nozzles again
 Set the leaving time for head nozzle immersion in maintenance liquid to 10
minutes.
• If these steps do not alleviate nozzle clogging, contact your dealer, or our sales office or call center.
4-20
2. Nozzle clogging
4. Mist
230 230
221
210 210
201
190 190
181
170 170
161
150 150
141
130 130
121
110 110
101
90 90
81
70 70
61
50 50
41
30 30
21
10 10
1
5. Mixing with air
If this does not alleviate nozzle clogging or other
issues
If this does not alleviate nozzle clogging or other
issues
If this does not alleviate nozzle clogging or other
issues
3. Ink dripping
221
201
181
161
141
121
101
81
61
41
21
1
Check results of test printing
Check results of test printing
Check results of test printing
Check results of test printing