hp LaserJet 1100 printing problem

[abell4610]

Thanks very much for your suggestion. I'll replace the transfer roller and see what happens. I really don't understand how that roller would have a charge though. Where does the charge come from to charge this roller?

[MikeRoger]

In fact this is the problem related to transfer roll.I once face this problem and could not even find it after spending much time.
Even it was difficult to diagnose from the printer repair person but it was solved much easy.
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