HP Latex 3200 Users Guide - Page 387

Troubleshooting Plot., Vertical Banding

Page 387 highlights

i. Banding present in all colors: ▲ Check the Substrate-Advance Compensation and calibrate if necessary. (Printer menu > Advance calibration ...) ii. Banding in one or more colors of the top row: a. Execute a check and clean routine, print the printhead status plot and check the number of blocked nozzles. b. If the number of blocked nozzles is roughly greater than 300 in any printhead, perform a hard cleaning routine, selecting the colors affected. c. After executing the cleaning routines, reprint the printhead status plot, the image quality troubleshooting plot, and check the current state of the printheads (expect to see less nozzles clogged) and of the banding. If banding is still visible, increase the number of passes. d. If none of the above work, replace the printhead that caused the banding (the one with most nozzles clogged). e. If the problem persists after replacing the printhead, consider it may be a substrate compatibility issue. iii. Banding in one or more colors of any row: a. Execute printhead alignment and recheck uniformity with the Image Quality Troubleshooting Plot. b. Execute check and clean, print the Printhead Status Plot, and check the number of blocked nozzles. If the number of blocked nozzles is greater than 300 in any printhead, perform a hard cleaning routine, selecting the colors affected. c. Check the Substrate-Advance Compensation and calibrate if necessary. d. Change the type of mask and/or increase the number of passes. e. Reduce the ink density. f. If the problem persists after all the corrective actions, consider it may be a substrate compatibility issue. b. Vertical Banding i. Wide bands: a. Execute printhead alignment. b. Check carriage beam position. c. Decrease curing temperature to reduce deformation. d. Change from 4 to 6 colors to reduce grain. e. Check substrate settings (vacuum and tension). ii. Microbanding (vertical high-frequency lines, less than 2mm [0.08 in] wide): ▲ Print the Printhead Alignment Plot to see the printhead responsible, and replace it. 3. After finishing the troubleshooting process, delete the image quality inspection job from the queue, and keep the files on the disk. NOTE: For more information on print quality troubleshooting, see the Advanced print-quality troubleshooting on page 384. ENWW Image quality inspection plot 381

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i.
Banding present in all colors:
Check the Substrate-Advance Compensation and calibrate if necessary. (
Printer menu
>
Advance calibration
…)
ii.
Banding in one or more colors of the top row:
a.
Execute a check and clean routine, print the printhead status plot and check the number of
blocked nozzles.
b.
If the number of blocked nozzles is roughly greater than 300 in any printhead, perform a
hard cleaning routine, selecting the colors affected.
c.
After executing the cleaning routines, reprint the printhead status plot, the image quality
troubleshooting plot, and check the current state of the printheads (expect to see less
nozzles clogged) and of the banding. If banding is still visible, increase the number of
passes.
d.
If none of the above work, replace the printhead that caused the banding (the one with
most nozzles clogged).
e.
If the problem persists after replacing the printhead, consider it may be a substrate
compatibility issue.
iii.
Banding in one or more colors of any row:
a.
Execute printhead alignment and recheck uniformity with the Image Quality
Troubleshooting Plot.
b.
Execute check and clean, print the Printhead Status Plot, and check the number of blocked
nozzles. If the number of blocked nozzles is greater than 300 in any printhead, perform a
hard cleaning routine, selecting the colors affected.
c.
Check the Substrate-Advance Compensation and calibrate if necessary.
d.
Change the type of mask and/or increase the number of passes.
e.
Reduce the ink density.
f.
If the problem persists after all the corrective actions, consider it may be a substrate
compatibility issue.
b.
Vertical Banding
i.
Wide bands:
a.
Execute printhead alignment.
b.
Check carriage beam position.
c.
Decrease curing temperature to reduce deformation.
d.
Change from 4 to 6 colors to reduce grain.
e.
Check substrate settings (vacuum and tension).
ii.
Microbanding (vertical high-frequency lines, less than 2mm [0.08 in] wide):
Print the Printhead Alignment Plot to see the printhead responsible, and replace it.
3.
After finishing the troubleshooting process, delete the image quality inspection job from the queue, and
keep the files on the disk.
NOTE:
For more information on print quality troubleshooting, see the
Advanced print-quality troubleshooting
on page
384
.
ENWW
Image quality inspection plot
381