Canon LBP 2410 Lazer Colour Printer -
Printing not dark enough or varied in darkness
If the print is a dismal gray rather than a sharp black, you are
probably almost out of toner. This can manifest itself evenly across the
entire page or in splotches or stripes, depending on the printer.
Sometimes you can wring a little bit more out of a toner cartridge by
taking it out and gently shaking it from side to side (never up and down,
as toner can spill out). You can also try turning up the printer’s
contrast adjustment, if it has such a knob (usually on the back side if it
exists). Faded print can also result from a dirty corona wire, because a
dirty wire inhibits a full electrical charge from being passed.
If the printouts are consistently varied in density, and you have to
frequently remove the toner cartridge and shake it to redistribute the
toner inside it, make sure the printer is sitting on an even, flat
Horizontal black lines
A horizontal black line on the printout is probably the result of a
dirty or damaged roller. There are lots of rollers in the printer, and you
can use the space between the lines on the page to determine which roller
is causing the problem. Measure the distance between the errant black
lines on the page and then use Table A to determine which part
might be causing the problem.
cartridge developer roller
cartridge photo drum
Regularly spaced splotches
If there are evenly spaced black spots but they don’t extend all the
way across the page, the problem is probably a scratch or flaw in the drum
or a build-up of toner on the fusing roller. If the spots are less than
three inches apart vertically, it’s probably the drum, because the drum
has a larger diameter than the fusing roller.
Vertical black line on edge of page
This can indicate an almost empty or faulty toner cartridge or (less
frequently) some spilled toner inside the printer.