HP Designjet 4500

6-22
Print Quality
HP Designjet 4500 Printer Series Service Manual
Lines are Missing or Thinner than Expected
Description of problem
Shown below is an example of what you might see if you have this problem:
Corrective Action
1 Check that the line thickness and color settings are correct in the application
that was used to generate the image.
2 Check that the appropriate print quality settings are being used and reprint
the image.
Refer to Page 6-3 for further information on choosing the correct
Print Quality settings
.
3 Recover the Printheads (Ink Menu/Printheads/Recover Printheads) and
reprint the image.
4 Try using a heavier paper type. When printing dense colors, it is
recommended to use HP Heavyweight Coated Paper or HP Productivity
Gloss.
5 Using Part 3 of the Image Quality Diagnostic Print, check if there is a
significant amount of nozzles out in the color that is actually causing the
problem (if see you a problem with the Black color in the customer print, then
only check the Black printhead in the Image Quality Diagnostic Print). If
there is a significant amount of nozzles out (refer to image 1 on Page 6-20)
then replace the faulty Printhead.