HP Latex 3200 Users Guide - Page 404

Physical deformation marks, Poor curing

Page 404 highlights

If the problem persists, try adjusting tension and vacuum settings according to the table below, step by step (a to c), until you find settings that work. ● Substrate wrinkles. If you see patches of high grain in some local areas of the print, this could be caused by wrinkles in the substrate. See There are wrinkles and ink smears on the substrate on page 363. ● Color usage. In general, 4-color printing produces more grain than 6-color printing. ● Dual-roll printing. If you see a different level of grain in dual-roll printing, a uniformity mask is recommended to equalize the grain. See Edit a substrate preset on page 110. Physical deformation marks You may occasionally see physical deformation of the substrate. This issue is not a mispositioning of the dots, but a physical deformation of the substrate that usually occurs after the dots have been printed. There are various kinds of deformation that may occur: ● Diverter horizontal marks: Deformations of the substrate in the shape of straight lines (about 6 cm long) towards the printed side of the substrate. They are separated about 2 cm vertically and 1 cm horizontally. ● Diverter vertical marks: These physical marks have the appearance of a braid. They consist of small wrinkles just below the curing module, forming a vertical line of small deformations. Both kinds of deformations can be the result of an excessive curing temperature. See There are physical marks on the substrate on page 367. Poor curing When the heat applied to the printed substrate is not enough for the quantity of ink laid down, the print may appear wet or with some gloss marks. The heat needed to cure is directly dependent to the combination of: ink density, time under the curing module (printmode), curing temperature, airflow, and drying power. These are the defects you may see: ● Perforated plate gloss marks: The print suffers from an added matte pattern over the areas with more ink density. You can see small circles scattered over the picture with different levels of gloss. 398 Chapter 11 Troubleshoot print-quality issues ENWW

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If the problem persists, try adjusting tension and vacuum settings according to the table below, step by
step (a to c), until you find settings that work.
Substrate wrinkles.
If you see patches of high grain in some local areas of the print, this could be caused by
wrinkles in the substrate. See
There are wrinkles and ink smears on the substrate
on page
363
.
Color usage.
In general, 4-color printing produces more grain than 6-color printing.
Dual-roll printing.
If you see a different level of grain in dual-roll printing, a uniformity mask is
recommended to equalize the grain. See
Edit a substrate preset
on page
110
.
Physical deformation marks
You may occasionally see physical deformation of the substrate. This issue is not a mispositioning of the dots,
but a physical deformation of the substrate that usually occurs after the dots have been printed. There are
various kinds of deformation that may occur:
Diverter horizontal marks:
Deformations of the substrate in the shape of straight lines (about 6 cm long)
towards the printed side of the substrate. They are separated about 2 cm vertically and 1 cm horizontally.
Diverter vertical marks:
These physical marks have the appearance of a braid. They consist of small
wrinkles just below the curing module, forming a vertical line of small deformations.
Both kinds of deformations can be the result of an excessive curing temperature. See
There are physical marks
on the substrate
on page
367
.
Poor curing
When the heat applied to the printed substrate is not enough for the quantity of ink laid down, the print may
appear wet or with some gloss marks. The heat needed to cure is directly dependent to the combination of: ink
density, time under the curing module (printmode), curing temperature, airflow, and drying power. These are the
defects you may see:
Perforated plate gloss marks:
The print suffers from an added matte pattern over the areas with more ink
density. You can see small circles scattered over the picture with different levels of gloss.
398
Chapter 11
Troubleshoot print-quality issues
ENWW