Konica 1250 toner piles on charging unit sides after 5000 copies

[qaraman]

I have replaced the developing unit, a new charge unit, new cleaning unit assembly and a new drum, the problem still happens, I have also lowered the density to - 3, any ideas what should I do next? IMG-20210319-WA0000.jpgIMG-20210319-WA0001.jpgIMG-20210319-WA0002.jpgIMG-20210325-WA0025.jpg

[GIUBOSS]

Re: Konica 1250 toner piles on charging unit sides after 5000 copies

I have replaced the developing unit, a new charge unit, new cleaning unit assembly and a new drum, the problem still happens, I have also lowered the density to - 3, any ideas what should I do next? [ATTACH=CONFIG]48758[/ATTACH][ATTACH=CONFIG]48757[/ATTACH][ATTACH=CONFIG]48759[/ATTACH][ATTACH=CONFIG]48756[/ATTACH]

Genuine toner?

[qaraman]

Re: Konica 1250 toner piles on charging unit sides after 5000 copies

Genuine toner?

Yes sir 100% Genuine.

[blackcat4866]

Re: Konica 1250 toner piles on charging unit sides after 5000 copies

Have a look at the upper cleaning unit seal. It will wear to a tapered edge then fold over, and act like an additional charging device. =^..^=

[qaraman]

Re: Konica 1250 toner piles on charging unit sides after 5000 copies

Have a look at the upper cleaning unit seal. It will wear to a tapered edge then fold over, and act like an additional charging device. =^..^=

Thanks for your reply, what you're saying makes sense, however the entire cleaner unit was replaced brand new for this issue.

[Woxner]

Re: Konica 1250 toner piles on charging unit sides after 5000 copies

perhaps the transfer belt is not transfering all the toner also replace transfer belt rollers. 951 does same thing.

[qaraman]

Re: Konica 1250 toner piles on charging unit sides after 5000 copies

perhaps the transfer belt is not transfering all the toner also replace transfer belt rollers. 951 does same thing.

Thanks for the reply, do you suggest I should replace transfer belt and rollers too?

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[allan]

Re: Konica 1250 toner piles on charging unit sides after 5000 copies

Thanks for the reply, do you suggest I should replace transfer belt and rollers too?

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If its done its yield or close to it. Not much to go wrong on the transfer belt assy.
The toner dusting in that area would suggest a problem on the cleaning unit the cause of it is unknown but check that there is nothing deforming the cleaning blade.

[qaraman]

Re: Konica 1250 toner piles on charging unit sides after 5000 copies

If its done its yield or close to it. Not much to go wrong on the transfer belt assy.
The toner dusting in that area would suggest a problem on the cleaning unit the cause of it is unknown but check that there is nothing deforming the cleaning blade.

Thank you, will check on Monday. Regards,

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[Albonline]

Re: Konica 1250 toner piles on charging unit sides after 5000 copies

check the toner suction/anti misting system

[tulintron]

Re: Konica 1250 toner piles on charging unit sides after 5000 copies

I have replaced the developing unit, a new charge unit, new cleaning unit assembly and a new drum, the problem still happens, I have also lowered the density to - 3, any ideas what should I do next? [ATTACH=CONFIG]48758[/ATTACH][ATTACH=CONFIG]48757[/ATTACH][ATTACH=CONFIG]48759[/ATTACH][ATTACH=CONFIG]48756[/ATTACH]

[qaraman]

Re: Konica 1250 toner piles on charging unit sides after 5000 copies


Thanks for this, I have replaced the developer again and properly made the counters and developing replacing procedure, they have been running since 2 days, they did not call back so far, hopefully it is solved. Check also all seals and cleanin blades, all look fine.

[blackcat4866]

Re: Konica 1250 toner piles on charging unit sides after 5000 copies

I seem to recall replacing a developing unit upper cover when the upper seal started curling back at the front and rear edges. It was around 8M prints. =^..^=

[qaraman]

Re: Konica 1250 toner piles on charging unit sides after 5000 copies

I seem to recall replacing a developing unit upper cover when the upper seal started curling back at the front and rear edges. It was around 8M prints. =^..^=

Yes, this would have been possible, however I changed the entire developing unit, this machine is now around 35M A4.

Thanks for the follow up, they still haven't called. :-)

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