HP Designjet 2500.3500cp Printer series - Manual (Page 247)

Troubleshooting
Solving Color Accuracy problems
11-27
There are Smears and/or Scratching on Your Printed
Media.
This can appear on paper based media if there is a lot of ink printed quickly, the
media gets distorted and as the printheads move over the media, the printheads and
the media come into contact with each other.
n Press the Cancel key on the front panel otherwise the printheads could get
damaged.
n Cancel the print job from your computer application.
n Use HP recommended media.
n Using the Take Up Reel can help solve this problem
n Change the print mode to Best.
If the above fails to solve the problem of smears and scratching, change the media
you are using to a non-paper based media such as glossy media.