HP Designjet T1120 Printer series - Manual (Page 167)

If the problem persists despite all the above actions, contact your customer service representative for
further support.
The paper is not flat
If the paper does not lie flat when it comes out of the printer, but has shallow waves in it, you are likely
to see defects in the printed image, such as vertical stripes. This can happen when you use thin paper
that becomes saturated with ink.
1. Check that the paper type you have loaded corresponds to the paper type selected in the front
panel and in your software. To check on the front panel, use the
View loaded paper key .
2. Try changing to a thicker paper type, such as HP Heavyweight Coated Paper or HP Super
Heavyweight Plus Matte Paper.
3. Select a paper type that is slightly thinner than the paper you have loaded; this will persuade the
printer to use less ink. Here are some example paper types in ascending order of thickness: Plain
Paper, Coated Paper, Heavyweight Coated Paper, Super Heavyweight Plus Matte Paper.
The print is scuffed or scratched
The black ink pigment can be scuffed or scratched when touched by a finger, a pen or some other object.
This is particularly noticeable on coated paper and matte proofing paper.
Glossy paper may be extremely sensitive to the basket or to anything else that it contacts soon after
printing, depending on the amount of ink used and the environmental conditions at the time of printing.
To reduce the risk of scuffs and scratches:
● Handle prints carefully.
● Avoid stacking prints on top of each other.
● Disable the automatic cutter before printing, so that the print will not fall into the basket. See Turn
the automatic cutter on and off on page 53 . Alternatively, leave a sheet of paper in the basket so
that freshly printed sheets do not make direct contact with the basket.
158 Chapter 15 Troubleshooting print-quality issues ENWW
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