Canon Laser Shot LBP5000 User Manual page 366

The overall print result is dark.
Cause 1 The setting for [Toner Density] is not appropriate.
Remedy Drag the [Toner Density] slider in the printer driver toward [Light].
In order to specify the setting for [Toner Density], display the [Custom Settings]
dialog box by clicking [Settings] in the [Quality] sheet.
Cause 2 The printer is exposed to direct sunlight or strong light.
Remedy Move the printer to a place where it will not be exposed to direct sunlight or
strong light. Alternatively, move the strong light source away from the printer.
The print is uneven.
Cause 1 Paper is too moist or too dry.
Remedy Replace the paper with appropriate one and print again. (See "Paper
Requirements," on p. 2-2)
Cause 2 The toner cartridge is nearing the end of its life.
Remedy Display the [Consumables/Counters] dialog box, then replace the toner
cartridge that is almost empty with a new toner cartridge. (See "Replacing Toner
Cartridges," on p. 5-2)
Cause 3 The printer has not printed for a long period of time.
Remedy Set [Special Print Mode] to [Special Settings 8] in the printer driver. If this solves
the problem, set [Special Print Mode] to [Off].
In order to specify the setting for [Special Print Mode], display the [Advanced
Settings] dialog box by clicking [Finishing Details] in the [Finishing] sheet, and
then clicking [Advanced Settings] in the [Finishing Details] dialog box.
Front or back of the printed paper has smudge marks.
Cause The fixing roller is dirty.
Remedy Clean the fixing roller. (See "Cleaning the Fixing Roller," on p. 5-22)
Smudge marks of spattering toner appear around the text.
Cause 1 Paper is inappropriate.
Remedy Replace the paper with one that can be used and print again. (See "Paper
Requirements," on p. 2-2)
Print Quality Problems
7
7-19