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Not sure what you mean by that.

It would be helpful if someone could confirm that the cleaning blade for the C35 will work for the C3350.

Does really noone have an idea where i can find a replacement cleaning blade?

Sorry for the late reply, i just now got to have a closer look at the transfer belt. The culprit seems to be the tranfser belt cleaning, as many of you have already suspected. Reasons are:

I have...

Last time i made some pictures of the belt, is anything visible in these pictures? I can see some scratches but can not judge if they might be causing these vertical lines.
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https://www.copytechnet.com/forums/konica-minolta/156722-konica-minolta-c3350-white-spots-vertical-lines-black-grey-prints.html?highlight=

I think you even helped to solve it : )

Consumables are pretty ok, that unit is used only very lighly.
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Thanks for the suggestions, i should have mentioned that i have replaced the black imaging unit just a couple of weeks ago because of another issue (that was fixed by the replacement), so i hope it...

On some prints there are grey or black vertical lines (see scan), does anyone know what might cause this problem?
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Ok, i will observe if the small white dots get bigger or more over time and for now hope they won't.

Thanks a lot!

That about the yellow toner is good to know, thanks!

Any idea what might cause these defects, i think similar ones were on the old drum. I am not sure if those defects have already been there when...

The black imaging unit replacement has arrived and i have exchanged it. Your suggestions were correct, now the vertical lines in black prints are gone (see attached scan).
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I had some...

It costs about 100 € around here. I wouldn't have called that cheap, but i guess it could be worse ^^

By the way, does someone have a recommendation for a good lint-free cleaning cloth that is...

I think you are right, the faint vertical lines in the color prints are probably more imagination than really there. I will try and replace the black imaging unit, after that i hope the quality will...

Here are 2 photos of the transfer belt. Can you identify if this looks normal or not?

Thank you for your answers and ideas!

I have tried cleaning the black opc drum with alcohol and a cotton cloth as a first step, because on inspection the white spots were visible as clots of toner...

Since some time there are white dots in the prints, even visible when text is printed. Even more visible is this in grey prints. Additionally there are some lines visible, especially in grey areas....