HP Color LaserJet 8550 Multifunction Printer series - Manual (Page 193)

192 8 Solving Printer Problems EN
Irregular, raised spots or
stray toner If you are printing on heavy media (28 to 58 lb, or 105 to
216 g/m
2
bond), you must select Heavy Paper as the
paper type in the Paper tab in the printer driver to
ensure the correct finish on the media. For more
information on changing printer driver settings, see the
online help.
Toner is smudged on the back of the page. Toner
collected on the transfer belt will cause smudging on
the back of a page. The belt is self-cleaning and the
smudging will normally clear within a few pages. Or,
open and close the front door to complete a printer
self-cleaning cycle.
You recently had a media jam or the printer fed multiple
sheets of media. Open and close the front door to
complete a printer self-cleaning cycle.
You are refeeding media that has already passed
through the printer or through a copier. Do not refeed
media. Refeeding media contaminates the fuser,
causing stray toner defects.
The fuser roller is contaminated. Print 5 to 10 pages to
clean the fuser roller.
Banding Consumables might be past their rated life. Check the
printer control panel display for any messages. If no
messages appear, print a configuration page to check
the life of the consumables. Replace any consumables
that are past their rated life.
Certain halftone patterns (lighter shades of a solid
color) exaggerate banding. Try a different halftone
pattern.
Problem Cause and Solution