Thanks: 
Likes: From memories black imaging unit for this model is relatively cheap.Originally Posted by kombo2
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From memories black imaging unit for this model is relatively cheap.
A tree is known by its fruit, a man by his deeds. A good deed is never lost, he who sows courtesy, reaps friendship, and he who plants kindness gathers love.
Blessed are they who can laugh at themselves, for they shall never cease to be amused.
I don't reply to private messages from end users.
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 available in Europe?
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).
grey4.pdf
I had some problems at first where the grey prints with new imaging unit showed some white spots. Also when i opened the packaging of the imaging unit, it looked like there was yellow toner on the drum, is that normal for a brand new imaging unit?
imagingunit.jpg
After gently wiping the drum the spots that appeared in the first prints disappeared, but on a horizontal line on the drum it looked like there are small dots of black toner stuck to it (see picture of drum). I could not remove those by gently wiping the drum. So at the moment there are some tiny white spots in the grey prints, almost invisible, but i fear those will get bigger over time and maybe even the lines will reappear. Do you have any idea what these small dots on the drum might be or what the cause for this might be?
drum.jpg
Yes, it's normal for all drum blades to be primed with yellow toner, on all manufacturers, all models.
The small defects you see are on the drum surface. The will not get worse, and they won't go away. You're only recourse is to order another drum (or live with it). Do not try to polish or remove the defects, you will make it worse. =^..^=
If you'd like a serious answer to your request:
1) demonstrate that you've read the manual
2) demonstrate that you made some attempt to fix it.
3) if you're going to ask about jams include the jam code.
4) if you're going to ask about an error code include the error code.
5) You are the person onsite. Only you can make observations.
blackcat: Master Of The Obvious =^..^=
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 i got the imaging unit, i suspect my printer is causing those.
Maybe somebody here knows more about the manufacture of organic photoconductors ... but I suspect that it's a defect in the outer clear-coat on the drum. I've seen such things before. They usually do not affect image quality. =^..^=
If you'd like a serious answer to your request:
1) demonstrate that you've read the manual
2) demonstrate that you made some attempt to fix it.
3) if you're going to ask about jams include the jam code.
4) if you're going to ask about an error code include the error code.
5) You are the person onsite. Only you can make observations.
blackcat: Master Of The Obvious =^..^=
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!
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