B227 drum units not running yeild

[Brett GS]

Hi all
Anyone else sitting with B227 drum units that dont run yeild?
I have had a few that bearly get 20k,have replaced drum,dev unit and transfer roller at the same time but still the drum wears on the edges.
All original KM parts.

[Copier Addict]

Re: B227 drum units not running yeild

Our experience has been getting yield but no more. With the transfer roller, instead of a corona, they wear faster.

[qbert69]

Re: B227 drum units not running yeild

Our experience has been getting yield but no more. With the transfer roller, instead of a corona, they wear faster.

I know on Kyoceras they have rubber charge rollers that get nasty with paper dust. Over time they will degrade from the oxidizing ozone & eventually get high voltage bubble/pop/arc spots in the rubber. Life on the charge rollers is generally 80k & at best 120k. Their amorphous silicon drums are supposed to last to 600k!!! Weak point is the charge rollers without a doubt!!!

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[allan]

Re: B227 drum units not running yeild

Check it the metal guide on the transfer roller assy is not bent.

[allan]

Re: B227 drum units not running yeild

Our experience has been getting yield but no more. With the transfer roller, instead of a corona, they wear faster.

If the machine runs good volume you can get 400K on a drum.

[Copier Addict]

Re: B227 drum units not running yeild

If the machine runs good volume you can get 400K on a drum.

That is quite true for the C360 and 4 series. The 8 and 7 series machines, high or low volume, get to yield or a bit over and then lines develop.
KonMin wasn't selling enough drums so they went to the charge roller design so they would fail sooner and thus sell more drums.

[allan]

Re: B227 drum units not running yeild

True for the color machines yes but this b/w box rocks and makes real good yield on volumes.

[CompyTech]

Re: B227 drum units not running yeild

That is quite true for the C360 and 4 series. The 8 and 7 series machines, high or low volume, get to yield or a bit over and then lines develop.
KonMin wasn't selling enough drums so they went to the charge roller design so they would fail sooner and thus sell more drums.

I think there is some truth to this as well. I know we've had some low volume 4e machines come back out of the field after three years or so and never had to change a drum. They should offer replaceable charger units.