Oki C9650 Dirty edge

[Guest]

I am having a problem with dirty edges of toner (mainly black) on the edge (control panel side) of the paper. I have replaced the toner/ drum/belt and fuser but no difference. If you print a 30% tint on both edges of a sheet of paper, the edge with the dirty marks prints more like 80% as though it is distributing the toner unevenly.
Any suggestions welcome (it happens on all types of paper worse on a silk finish)
Thanks in advance

[Eric1968]

Re: Oki C9650 Dirty edge

Maybe the paper is causing this. These printers can handle a lot of different sorts of paper, but sometimes the paper isn't suitable for printing on this machine. Did you specify the paper weight or is the printer measuring the weight?

[inkey20]

Re: Oki C9650 Dirty edge

Maybe the paper is causing this. These printers can handle a lot of different sorts of paper, but sometimes the paper isn't suitable for printing on this machine. Did you specify the paper weight or is the printer measuring the weight?

It happens on all papers and boards coated and uncoated. Tried various paper weight settings as well as automatic The silk is a digital silk paper.

[Eric1968]

Re: Oki C9650 Dirty edge

You can also change LED-Heads and see if the problem shifts to another color.

[inkey20]

Re: Oki C9650 Dirty edge

You can also change LED-Heads and see if the problem shifts to another color.

I'll give that a try and come back with the results, thanks

[inkey20]

Re: Oki C9650 Dirty edge

You can also change LED-Heads and see if the problem shifts to another color.

Tried changing LED head on black with magenta head no difference in marking. It does not mark when I set it to Transparency setting but then it has an overall mottley background tint.

[Eric1968]

Re: Oki C9650 Dirty edge

Can you post a scan of the problem?

[inkey20]

Re: Oki C9650 Dirty edge

Can you post a scan of the problem?

Scan attached of fault

[Eric1968]

Re: Oki C9650 Dirty edge

You've replaced drum/toner/belt/fuser and no result. The only thing I can think of is the High Voltage Board (beneath the transfer belt).

[mjarbar]

Re: Oki C9650 Dirty edge

Did you change just the transfer belt or the whole thansfer unit? I have had a problem similar to this that turned out to be the transfer roller.