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Printhead alignment, Advanced print-quality troubleshooting, Print-quality artifacts troubleshooting

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Even if the sensor is working correctly, the substrate may not be navigable, meaning that the substrate-advance sensor cannot see it properly (as in the case of transparent substrates or substrates with very smooth back side). In this case, the substrate-advance sensor disables itself automatically. You are then recommended to adjust the substrate-advance compensation: see Substrate-advance compensation on page 181. For best results, cleaning the substrate-advance sensor is included in the printer's weekly maintenance. Printhead alignment Perform a manual printhead alignment. See Alignment procedure on page 172. The result of the alignment can be verified with the printhead alignment diagnostics plot. See Printhead alignment diagnostics plot on page 175. Advanced print-quality troubleshooting If the basic print-quality troubleshooting does not solve the problem, here are some further procedures that you can try. One of the most important parts of print-quality troubleshooting is to ensure that the printheads are healthy. See Printhead health troubleshooting on page 403. Print-quality artifacts troubleshooting Horizontal banding Horizontal banding means that your print suffers from added horizontal lines or bands, in a regular pattern. They can look different depending on the cause. Thin dark lines These are thin dark lines across the entire image with certain frequency, more easily seen in solid area fills. There are two likely causes: ● Printhead alignment. This is a clear contributor to banding. If printheads are not correctly aligned, the misplaced dots could correlate directly with the severity of the banding, by putting more ink in the same place and thus creating darker lines. To check printhead alignment, print the printhead alignment diagnostics plot (see Printhead alignment diagnostics plot on page 175). As a general rule, the biggest contributors to thin-dark-line banding caused by printhead alignment are (in this order): - Intra-color alignment (alignment between the two printheads of the same color) - Inter-color alignment (alignment between different colors) Here are some tips for solving this problem: - If the printhead alignment was done with a different substrate of different thickness, probably a new printhead alignment is needed. - Fine-tune the alignment by identifiying the offenders in the printhead alignment diagnostics plot. See Alignment procedure on page 172. ● Substrate advance. Before trying to adjust any parameter, make the following checks: - Check that no substrate-advance factor was set earlier that could prevent the substrate-advance sensor from working correctly. - Run the diagnostics to check that that the substrate-advance sensor is not dirty. 384 Chapter 11 Troubleshoot print-quality issues ENWW

Section	Page
Introduction	7
How to use this manual	7
Welcome to your printer	7
Documentation	8
Safety precautions	8
General safety guidelines	9
Electrical shock hazard	9
Heat hazard	10
Fire hazard	10
Mechanical hazard	11
Light radiation hazard	11
Chemical hazard	12
Ventilation	12
Air conditioning	12
Sound pressure level	12
Heavy substrate hazard	12
Ink and condensation handling	12
Use of tools and keys	13
Warnings and cautions	13
Warning labels	14
Emergency stop buttons	16
Main components	16
Front view HP Latex 3000 Printer	17
Front view HP Latex 3100/3200/3500/3600 Printer	18
Rear view HP Latex 3000 Printer	19
Rear view HP Latex 3100/3200/3500/3600 Printer	20
Carriage view	21
Printer software	21
Turn on the printer for the first time	22
Turn the printer on and off	22
Move the printer	23
Printer Status Beacon	24
Output platen light (HP Latex 3200/3600 only)	25
HP Internal Print Server	26
Start the Internal Print Server	26
Change the language of the Internal Print Server	27
Change the units of measurement in the Internal Print Server	27
Set the Internal Print Server preferences	27
General tab	28
Queue Rules tab	28
Additional Settings tab	29
Remote Assistance tab	30
Internal Print Server menus	30
Printer status and alerts	31
Update the firmware and the Internal Print Server	32
Update the firmware	32
Update the Internal Print Server and HP IPS Services	32
Maintain the Internal Print Server	34
Printing workflows integration	35
Introduction to JDF	35
What is JDF?	35
Benefits of working with JDF for file submission	35
Working with JDF	35
Creating JDF job tickets	35
What information is captured by the HP latex 3000 printer series and what can be communicated by JMF ...	35
Guidelines for Integration	36
How to integrate the HP Latex 3000 printer series into CALDERA RIP	36
How to integrate the HP Latex 3000 printer series into ONYX RIP	37
Job submission methods	38
How to integrate the HP Latex 3000 printer series into an MIS system or production control software	39
Handle the substrate	41
Supported substrate types	41
Check the porosity of your substrate	42
Supported HP substrates	43
Substrate tips	45
Maintain the substrates	45
General tips	46
Color consistency	47
Substrate configurations	47
Prepare to print	49
The substrate edge holders	49
Substrate edge holders for HP Latex 3000, 3100 and 3500	50
Install an edge holder on the HP Latex 3000, 3100 and 3500	50
Replace an edge holder strip	52
Substrate edge holders for HP Latex 3200, 3600 and 3000/3100/3500 with Double-sided Day Night Kit	52
The ink collector kit	54
Kit components	55
Install the kit	55
Uninstall the kit	61
Load a roll onto the spindle	65
Single-roll printing	65
HP Latex 3000/3100/3200 dual roll	67
HP Latex 3500/3600 dual-roll split spindles center support	69
Load a roll into the printer	71
Load a roll (roll-to-roll configuration)	73
Load a roll (dual roll-to-roll configuration)	83
Load a roll (roll-to-free-fall configuration)	87
Load a roll (roll-to-collector configuration)	90
Skew check option	91
Additional notes	92
Double-sided printing	93
Side A: Load and print	94
Side A: Unload	95
Side B: Load and print	96
Print a double-sided job with dual-roll	97
View information about the loaded substrate	98
Unload a roll	98
HP Latex Double-sided Day and Night Kit	100
Substrate saver	100
In-line slitters	105
LED proofing lights	107
Substrate presets	108
Export multiple presets	108
Use a new substrate	109
Optimize for tiling	110
Prepare the printer for a new substrate	113
Create a new substrate preset with the Add New Substrate wizard	114
Material	114
Application	114
Optimized for	114
Test print	115
Edit a substrate preset	116
Printing masks	118
On-the-fly adjustments	119
Optimize the preset for higher print speed	120
Action	120
Possible risks and compensations	120
Optimize for best print quality and/or widest gamut	120
Actions	120
Considerations	120
Optimize for ink consumption	121
Actions	121
Considerations	121
Recommended print modes for each substrate type	121
Adjust the printing workflow for optimum color performance	122
Remove a substrate preset	122
Online substrate manager	123
Sorting	123
Structured Search	123
Free Text Search	123
Install new substrate	124
Update existing substrate	125
Substrate synchronization	125
Set the carriage beam position	129
Create and manage print jobs	131
Add a new print job	131
Dual-roll printing	135
Dual-roll layout preview	136
Rotate a print job	137
Manage the print queue	138
Delete a print job	139
Image composition	140
Tiling	140
Double-sided	141
Create a job	141
Multijobs on double side block out	148
Nesting	150
The Choose Image File window	150
The Job Properties window	151
The Advanced Nesting Arrangement window	152
Restart and Print	153
Handle the ink system	154
Ink system components	154
Ink cartridges	154
Printheads	154
Printhead cleaning roll	155
Aerosol filters and drying filters	155
Left spittoon	155
Condensation collector bottle	156
Ink deposits	156
How to work with ink system components	156
Ink cartridges	156
Remove an ink cartridge	156
Insert an ink cartridge	157
Maintain the ink cartridges	158
Check the status of the ink cartridges	158
Misuse of ink cartridges	159
Consequences of using non-HP ink	159
Printheads	160
Remove a printhead	160
Insert a printhead	163
Maintain the printheads	166
Check and clean the printheads	166
Safe mode	167
Replace the printhead cleaning roll, filters, and spittoon	167
Replace the aerosol filters	168
Replace the drying filters	170
Replace the left spittoon	172
Replace the printhead cleaning roll	173
Printer calibration	178
Align the printheads	178
Alignment procedure	178
Aligning the optimizer printhead	180
Possible difficulties with printhead alignment	180
The optimizer ink is invisible or hardly visible	180
The optimizer printhead is still misaligned in the substrate axis after alignment	181
A pattern shows more than one good correction	181
Printhead alignment diagnostics plot	181
Zone 1: Printhead Row0 alignment check (closer to the substrate output)	182
Zone 2: Printhead to printhead Row1 (versus Row0) alignment check	183
Zone 3: Optimizer printhead alignment check	183
Zone 4: Scan-axis bidirectional alignment check	184
Color calibration	184
Color consistency between different HP Latex 3000 printers	186
Color profiles	186
Substrate-advance compensation	187
Manual substrate-advance compensation	187
Substrate-advance test print	188
Calibrations specific to one substrate preset	189
Recommended calibrations after particular events	190
HP Print Care	191
Print Care diagnostics	192
Update the Print Care software	194
Reinstall the Print Care software	194
Hardware maintenance	195
Safety precautions	195
User maintenance kits	195
HP Latex 3x00 Printer Series maintenance kits and tools	196
HP Latex 3x00 Printer Cleaning Kit contents	196
HP Latex 3x00 Printer Maintenance Kit contents	197
Maintenance tools recommended but not provided	198
How to perform maintenance operations	198
Perform maintenance with Print Care wizards	198
Perform maintenance without Print Care wizards	199
How to turn the printer off and on for maintenance operations	201
Turn the printer off	201
Turn the printer on	202
Summary of maintenance operations	204
Mandatory	208
Weekly	208
Introduction	208
Clean the print zone	208
Clean the substrate-advance sensor	210
Clean the aerosol filters	212
Clean the pinchwheels and drive roller	215
Clean the output platen	217
Empty the condensation collector bottle	219
Every 125 liters of ink	222
Introduction	222
Clean the carriage rails and replace the oiler foams	222
Empty the oil collector caps	235
Clean the bottom of the carriage, the drying glasses, and the line and crash sensors	244
Clean the drop-detector ink deposits	248
Clean the e-cabinet fan filters	251
Clean the e-box fan filter	253
Clean substrate input/output gears and spindle metal debris	256
Every 500 liters of ink	258
Introduction	258
Replace the rubber blade	258
Every 1500 liters of ink	262
Introduction	262
Replace the e-cabinet fan filters	262
Replace e-box fan filter	264
Clean the impinging plate	267
Clean the vapor removal external filter	269
Clean the rear scan-axis beam	270
Clean and grease the substrate drive transmission gears and rods	273
Grease the carriage beam screws	274
Clean and grease the service station transmission and rods	276
Empty the drop detector ink vessel	277
Grease the printhead primers	279
When required	282
Introduction	282
Check the printer for dust and aerosol	283
Replace a pinchwheel submodule	284
Replace a primer	286
Replace the aerosol fan module	292
Replace the drying fans array	296
Replace the drying lamps	301
Clean the drying module quartz glass and air outlet	311
Replace the drying quartz glass	317
Replace a curing fan and resistor module	321
Replace a service station cap	325
Replace an intermediate tank	328
Replace an e-cabinet fuse	330
Clean the printhead contacts	332
Replace a spindle valve	337
Clean the roll-to-free-fall roller and pinchwheels	339
Clean the carriage rails manually	340
Pinch clamp replacement	342
Replace the rocker pads	343
Clean the scan axis encoder	344
Replace the curing module side rubber	345
Clean the service station caps	346
Empty the printhead cleaning waste bottle	348
Clean the perforated plate	349
Ink collector 3 liter/daily maintenance	353
Introduction	353
Wipe the protector	353
Wipe the ribs of the ink collector modules	354
Ink collector: after uninstalling the ink collector kit maintenance	355
Introduction	355
Wipe the protector	355
Wipe the ink collector modules	355
Clean the curing module and airlet plates	356
Ink collector 40 liter maintenance	359
Introduction	359
Replace the ink collector foams	359
Ink collector 500 liter maintenance	361
Introduction	361
Clean the curing fan grid and internal foam	361
Replace protector and textile substrate edge holder	364
Troubleshoot substrate issues	365
Loading issues	365
The substrate cannot be loaded successfully	365
The substrate has jammed	365
The substrate is not attached to the core and/or spindle	366
The substrate is not flat	366
Printing issues	367
A spindle latch suddenly opens during printer operation	367
The substrate advances with a loud continuous sound of vibration	367
There is skew or telescoping on the output spindle	368
There are wrinkles and ink smears on the substrate	369
There are ink marks on the substrate	372
The substrate sticks to the platen	372
There are physical marks on the substrate	373
There are drops of ink on the substrate	374
Dual roll printing issues	375
Check center support alignment to solve this issue	375
Calibrate the dual-roll center support	376
Periodic noise on the center support latch when the substrate is moving	379
Print length issues	380
The print is shorter than expected	380
How to achieve better consistency between jobs of the same length	380
Collector issues	381
The collector stops winding	381
The collector occasionally fails to work correctly	382
The collector winds in the wrong direction	382
The substrate is detached or winds around the collector in the wrong direction	382
There is skew or telescoping on the collector	382
The substrate has jammed on the collector	382
Slitter poor cutting quality	382
Troubleshoot print-quality issues	384
General advice	384
Image quality inspection plot	386
Basic and advanced troubleshooting	388
Basic print-quality troubleshooting	388
Printhead check and clean	389
Substrate-advance sensor check	389
Printhead alignment	390
Advanced print-quality troubleshooting	390
Print-quality artifacts troubleshooting	390
Horizontal banding	390
Thin dark lines	390
Thin white lines	391
Bands of light and dark zones	393
Gloss banding	394
Aeroworms	395
Vertical banding	395
Microbanding	395
Wide bands 2 cm apart	396
Wide bands at least 4 cm apart	396
Color misalignment	397
Bleed, halo, wicking	398
Low gloss, haze	398
Color accuracy	399
Local color variations	399
Color variations when tiling	399
Edge roughness, text quality	400
Graininess	402
Physical deformation marks	404
Poor curing	404
Troubleshoot ink cartridge and printhead issues	406
Ink cartridges	406
Cannot insert an ink cartridge	406
The Internal Print Server does not recognize an ink cartridge	406
The Internal Print Server recommends replacing or reseating an ink cartridge	406
Bent ink cartridge connector	406
Printheads	407
Cannot insert a printhead	407
The Internal Print Server recommends replacing or reseating a printhead	407
General recommendations	407
Problem due to overheating	407
Problem due to the primer system	407
Printhead health troubleshooting	409
Printhead status plot	409
Drop detector diagnostics	410
Decision table	410
Hard clean	410
New printhead is rejected	411
Printhead cleaning roll errors	411
Troubleshoot other issues	412
The printer does not start	412
The printer does not print	412
The printer cannot be restarted from the Internal Print Server	412
The printer seems slow	412
Request to reinitialize the carriage	413
The Internal Print Server cannot detect the printer	413
Print Care spontaneously restarts	413
Color calibration fails	413
When you need help	414
HP Proactive Support	414
HP Customer Care	415
HP Customer Care Centers	415
Service information	415
Printer specifications	417
Functional specifications HP Latex 3100/3200/3500/3600	417
Physical specifications	418
Memory specifications	419
Power specifications	419
Air supply requirements (pneumatic spindle)	419
Air pressure supply	419
Pneumatic connector	419
Ecological specifications	420
Environmental specifications	420
Acoustic specifications	420
Printer messages	421
Glossary	424

Match case Limit results 1 per page

Even if the sensor is working correctly, the substrate may not be navigable, meaning that the substrate-advance

sensor cannot see it properly (as in the case of transparent substrates or substrates with very smooth back side).

In this case, the substrate-advance sensor disables itself automatically. You are then recommended to adjust the

substrate-advance compensation: see

Substrate-advance compensation

on page

181

For best results, cleaning the substrate-advance sensor is included in the printer’s weekly maintenance.

Printhead alignment

Perform a manual printhead alignment. See

Alignment procedure

on page

172

The result of the alignment can be veriﬁed with the printhead alignment diagnostics plot. See

Printhead

alignment diagnostics plot

on page

175

Advanced print-quality troubleshooting

If the basic print-quality troubleshooting does not solve the problem, here are some further procedures that you

can try.

One of the most important parts of print-quality troubleshooting is to ensure that the printheads are healthy.

See

Printhead health troubleshooting

on page

403

Print-quality artifacts troubleshooting

Horizontal banding

Horizontal banding means that your print suﬀers from added horizontal lines or bands, in a regular pattern. They

can look diﬀerent depending on the cause.

Thin dark lines

These are thin dark lines across the entire image with certain frequency, more easily seen in solid area ﬁlls. There

are two likely causes:

●

Printhead alignment.

This is a clear contributor to banding. If printheads are not correctly aligned, the

misplaced dots could correlate directly with the severity of the banding, by putting more ink in the same

place and thus creating darker lines.

To check printhead alignment, print the printhead alignment diagnostics plot (see

Printhead alignment

diagnostics plot

on page

175

). As a general rule, the biggest contributors to thin-dark-line banding caused

by printhead alignment are (in this order):

–

Intra-color alignment (alignment between the two printheads of the same color)

–

Inter-color alignment (alignment between diﬀerent colors)

Here are some tips for solving this problem:

–

If the printhead alignment was done with a diﬀerent substrate of diﬀerent thickness, probably a new

printhead alignment is needed.

–

Fine-tune the alignment by identiﬁying the oﬀenders in the printhead alignment diagnostics plot. See

Alignment procedure

on page

172

●

Substrate advance.

Before trying to adjust any parameter, make the following checks:

–

Check that no substrate-advance factor was set earlier that could prevent the substrate-advance

sensor from working correctly.

–

Run the diagnostics to check that that the substrate-advance sensor is not dirty.

384

Chapter 11

Troubleshoot print-quality issues

ENWW