We are experiencing the same issue. Dell 5100cn prints one color all over the printed page, almost like it's leaking a certain color, or producing too much ink on the page. If you print 10 pages, on the 3rd one on it starts printing magenta all over the page. I'm not sure if this is the drum kit or a bad magenta, or what. Any Suggestions?
i am a tech/Eng working on these printers, and i have 2 in the shop for the same problem.
if you open the front door, then close it, the printer will do a cleaning cycle, do this a number of times.
i bet the first print out will look OK, but it then goes back to bleeding colors all over the place.
and i am trying to find the cause of this problem.