black traces

[shinchan]

Hello all,

I would to know how I can deal with black traces on my WC7830 like this image (roll marks ?)... what can I do to solve this problem ?



thanks for your help.

best regards

Clean all rollers inside the IBT ASSY...

most of the time, the IBT sides rubber becomes sticky and pieces of the rubber stick inside the IBT or rollers.

if the sides rubber already destroyed, then change the whole IBT belt.

[Mysrtx]

This is a transfer belt roller issue. There is debris or toner built up on the inner ITB rollers causing a ripple/fold/bend on the belt. If you can't get/afford a new ITB unit remove the belt, scour and wipe the ITB rollers with a clean dry cloth, you can use a little alcohol if needed on the metal rollers. If the buckles are to distinguishable on the belt unit replace the belt.