Bad quality prints, grey banding

[jacanape]

Hi,

The prints from my Konica Minolta bizhub C552 exhibit a wide gray line on 5 cm from the bottom of the print in the course direction of the machine.
The thicker the paper, the darker the line.

Does anyone know what the problem is and how I fix this?

Thanks, Peter

[allan]

Re: Bad quality prints, grey banding

Sure seen it a lot can identify it by the symptoms.
Condition is called techususgetusus and remedied by a dose of payatechusus.

Not a gambling man and no fixtures to look at(sample print or even what you have tried...) but would guess the odds is in favor of the transfer belt.

[jacanape]

Re: Bad quality prints, grey banding

lines.jpg

This is a scan of a print on 300grs paper.
Maybe this helps... ;-)

[allan]

Re: Bad quality prints, grey banding

Looks like a combination of run down parts.

[copyman]

Re: Bad quality prints, grey banding

The one pic looks like magenta and the other grey. Usually grey is waste toner. Agree with allan, start with transfer belt than drums/developer units.

It would really help if you would give more information, like consumable life counts, what you did so far, etc. It's a Saturday and not busy why I'm even replying. I had posted before if someone needs help and they won't at least provide life counts, what they did so far,etc. then I won't help them.
Providing pictures is great and a lot of help but some additional information is necessary, especially on quality issues which can be so many different things causing it.

[jacanape]

Re: Bad quality prints, grey banding

The one pic looks like magenta and the other grey. Usually grey is waste toner. Agree with allan, start with transfer belt than drums/developer units.

It would really help if you would give more information, like consumable life counts, what you did so far, etc. It's a Saturday and not busy why I'm even replying. I had posted before if someone needs help and they won't at least provide life counts, what they did so far,etc.
Providing pictures is great and a lot of help but some additional information is necessary, especially on quality issues which can be so many different things causing it.

Ok , I Will send more info on monday. Thanks

[Phil B.]

Re: Bad quality prints, grey banding

The one pic looks like magenta and the other grey. Usually grey is waste toner. Agree with allan, start with transfer belt than drums/developer units.

It would really help if you would give more information, like consumable life counts, what you did so far, etc. It's a Saturday and not busy why I'm even replying. I had posted before if someone needs help and they won't at least provide life counts, what they did so far,etc.
Providing pictures is great and a lot of help but some additional information is necessary, especially on quality issues which can be so many different things causing it.

yeah.. seems hardly anyone gives life counts... work done... error codes....

that why a lot of threads go 15 -20 comments... " Pulling Teeth "

Phil B. " The Dentist "

[jacanape]

Re: Bad quality prints, grey banding

yeah.. seems hardly anyone gives life counts... work done... error codes....

that why a lot of threads go 15 -20 comments... " Pulling Teeth "

Phil B. " The Dentist "

Hi Phil, thanks for the effort!

There is still no work done to solve the problem. There are no error codes.
The only thing I did was cleaning the transfer roller and the corona's with the cleaning rods.
The correct pic I have sent was the gray one. (the other was magenta after scanning in colormode...) So there is no color in the smudged lines on the print.
The problem arises especially for printing on thick paper (250-300 grm)...

consumables list.jpglines.jpg

[tsbservice]

Re: Bad quality prints, grey banding

If the bands are in parallel with paper feeding direction I would start by stopping A3 paper in machine to eliminate fuser. If fuser is OK next thing to check is your K drum(it's due replacement) and/or TBU.

[jacanape]

Re: Bad quality prints, grey banding

If the bands are in parallel with paper feeding direction I would start by stopping A3 paper in machine to eliminate fuser. If fuser is OK next thing to check is your K drum(it's due replacement) and/or TBU.

Hi,

What do you mean by "stopping A3 paper"?

Sorry, my language is Dutch, so I don't always understand the meaning. Google translate makes a mess of it... :-)

[tsbservice]

Re: Bad quality prints, grey banding

Just make copy/print on A3, it's longer and easy to stop it(for enduser) partly in fuser by opening machine door.
Next you can examine jammed paper, this is basic print quality troubleshooting.

[copyman]

Re: Bad quality prints, grey banding

You posted you cleaned the transfer roller. What did you use to clean the roller? Did cleaning make it worse? Those bands not in direction of paper feed would be caused by something like the transfer roller, etc.

[jacanape]

Re: Bad quality prints, grey banding

You posted you cleaned the transfer roller. What did you use to clean the roller? Did cleaning make it worse? Those bands not in direction of paper feed would be caused by something like the transfer roller, etc.

I cleaned the roller with offset glaze remover. The cloth was black after cleaning. Cleaning did make it al little bit better, but not for long...
The bands are in direction of paperfeed.

[jacanape]

Re: Bad quality prints, grey banding

Just make copy/print on A3, it's longer and easy to stop it(for enduser) partly in fuser by opening machine door.
Next you can examine jammed paper, this is basic print quality troubleshooting.

OK so I did that. The paper that comes out of the fuser on the upper side has banding, the lower side has none.
I also made pictures of the K drum, maybe this helps...?
1.jpg2.jpg3.jpg

[Bix]

Re: Bad quality prints, grey banding

Sorry it's not very clear.
Before entering the fuser how is it?
If it is clean before entering the fuser, then it is the fuser.