Lexmark C780 Connection Guide

Print quality guide
Page 3 of 4
Transparency print quality is
poor
(Print has inappropriate light or dark
spots, toner is smeared, horizontal or
vertical light bands appear, or color
does not project.)
• You are using transparencies that do
not meet the printer specifications.
• The Paper Type setting for the tray
you are using is set to something
other than Transparency.
• Use only transparencies
recommended by the printer
manufacturer.
• Make sure the Paper Type setting is
set to Transparency.
Toner specks
• The print cartridges are defective.
• The transfer roller is worn or
defective.
• The image transfer unit is worn or
defective.
• The fuser is worn or defective.
• Toner is in the paper path.
• Replace the specified print cartridge.
• Replace the transfer roller.
• Replace the image transfer unit.
• Replace the fuser.
• Call for service.
Toner rubs off the paper easily
when you handle the sheets
• The Type setting is wrong for the type
of paper or specialty media you are
using.
• The Texture setting is wrong for the
type of paper or specialty media you
are using.
• The Weight setting is wrong for the
type of paper or specialty media you
are using.
• The fuser is worn or defective.
• Change Paper Type to match the
paper or specialty media you are
using.
• Change Paper Texture from Normal
to Smooth or Rough.
• Change Paper Weight from Plain to
CardStock (or other appropriate
weight).
• Replace the fuser.
Gray
background
• The Toner Darkness setting is too
dark.
• The print cartridges are defective.
• Select a different Toner Darkness
setting from the printer driver before
sending the job to print.
• Replace the specified print cartridge.
Uneven print
density
• The print cartridges are defective.
• The transfer roller is worn or
defective.
• The image transfer unit is worn or
defective.
• Replace the specified print cartridge.
• Replace the transfer roller.
• Replace the image transfer unit.
Ghost Images
The toner level is low in the print
cartridges.
• Make sure the Paper Type setting is
correct for the paper or specialty
media you are using.
• Replace the specified print cartridge.
Symptom Cause Solution
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Lexmark C780 Specifications

General

Brand	Lexmark
Model	C780
Category	Printer
Language	English