Print quality troubleshooting
Banding
If the Printer is experiencing a banding problem, you will see repetitive horizontal bands within the printed image.
Darker horizontal bands or lines repeated along the vertical band (from top to bottom at the same distance).
Whiter horizontal bands or lines along the vertical band (from top to bottom at the same distance).
The plot is printed in Best or Normal mode (according to the menu option selected) with Error Hiding ON. The top band has 100% ink density patches
while the bottom band has 50% ink density patches.
Troubleshooting Banding Problems
If banding does NOT occur in ALL the colors, then it is more than likely a
Printhead problem. In this case, try the following:
1Check that the appropriate print quality settings are being used (refer to the User’s Guide for more information).
2Recover the printheads using the option through the Front Panel (Main Menu/Image Quality Maintenance/Clean Printheads). Reprint the Diagnostic Print or the print file and if the problem persists, replace the faulty Printhead.
If banding does occur in ALL the colors, then it is more than likely a Paper Advance problem:
If the bands are light, it means that the paper has advanced too much.
If the bands are dark, it means that the paper hasn’t advanced enough.
HP Designjet T Series — Service Manual |