4200 Dirty Press Roller

[kjg]

OK, I need some input.

I have one customer with two FS4200DN's that both exhibit the same problem.

The press rollers will coat up with toner in a relatively short time. In time, this will transfer to the paper and cause big toner blobs.
The first one coated up within 1144 pages and the second coated up within 558 pages.
Both are new printers with low counts (40000K and 6K) and both have new style fusers and latest firmware. Nothing has been tweaked on these printers.
The Drum units are good and there is no dusting inside the printers. The Heat rollers are clean and have no buildup. Only the Press rollers.

The customer runs a premium white paper and an occasional statement sheet which is pre-printed and good quality. They do run an occasional full sheet of
Avery label stock through the bypass. Bypass and print driver are set for labels through bypass. Office environment is very clean and temperature is good. Power is also good.

I have gobs of these printers out and have not seen elsewhere this so I think it is paper stock that is causing the problem.

Has anyone else seen this and what was your resolution? I already replaced the fuser on one per Kyocera just to see if the problem would go away.

Your thoughts would be greatly appreciated.

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[Kyo fan]

Re: 4200 Dirty Press Roller

OEM toner or third party?

[kjg]

Re: 4200 Dirty Press Roller

OEM Toner.
All I ever use.
Forgot to add that.

[copydocinc]

Re: 4200 Dirty Press Roller

I've noticed that a lot of Kyocera fusers will not do well with glossy paper, causing a fuser mess.
Maybe this fuser is extra sensitive to the premium paper they are using.
or
The occasional labels, if they are reinserting the same label sheet over and over, printing one label at a time. (I've seen it)

[kjg]

Re: 4200 Dirty Press Roller

The customer did say they use the label twice. one pass on one side, then flipped and one pass on same face but other edge.
I cautioned against using it more than that.
I will ask to look at label stock again when there next.

Thanks!!!

[blackcat4866]

Re: 4200 Dirty Press Roller

I've noticed that a lot of Kyocera fusers will not do well with glossy paper, causing a fuser mess.
Maybe this fuser is extra sensitive to the premium paper they are using.
or
The occasional labels, if they are reinserting the same label sheet over and over, printing one label at a time. (I've seen it)

The customer did say they use the label twice. one pass on one side, then flipped and one pass on same face but other edge.
I cautioned against using it more than that.
I will ask to look at label stock again when there next.

Thanks!!!

Label adhesive could account for the toner adhering. Does it clean off with D-Ink?

Do they use it as an envelope printer? Dedicated envelope printers will build up a ridge of toner on the pressure roller where the edge of the envelope rides. If a fuser lasts 1/3 of it's rated yield it's doing good as a dedicated envelope printer. =^..^=

[kjg]

Re: 4200 Dirty Press Roller

Toner cleans off easily.

I will look at labels on next visit but I am skeptical. They run only a couple of labels per day. Mostly premium 20lb bright white paper.

They do not run envelopes. I asked that right up front as I have seen that on envelopes for a long time.

The the paper seems just a bit thicker than regular run of the mill 20lb paper but that is what the package says.

Thanks for all the input thus far. Still looking into it.

[monstott2010]

Re: 4200 Dirty Press Roller

Toner cleans off easily.

I will look at labels on next visit but I am skeptical. They run only a couple of labels per day. Mostly premium 20lb bright white paper.

They do not run envelopes. I asked that right up front as I have seen that on envelopes for a long time.

The the paper seems just a bit thicker than regular run of the mill 20lb paper but that is what the package says.

Thanks for all the input thus far. Still looking into it.

Since we sell paper as well, when we run into something like this, we generally will take them a ream or two of our paper to test... if it solves the problem, then great, it was just the paper, if not, we can rule that out and move on... cheap test considering... I would agree that in this case, it would look to be an issue with the labels, maybe a different label stock or even a heavier setting may help... would it help to cut the label sheet in half and run statement size, single run thru instead of running twice? just thinking....

[kjg]

Re: 4200 Dirty Press Roller

Update-
We are now seeing this on some 3550's and 2100's in addition to the 4200's mentioned here.
First couple of sheets out usually have a bit of toner trash on them and then they are clean.
All have toner blobs on press roller, mostly in the center.
If you notice this, please document with Kyocera.
Thanks.

[Kyo fan]

Re: 4200 Dirty Press Roller

I think your problem are heat rollers, since it's a known issue with toner sticking to them on these models. For that reason they updated fuser units.

[kjg]

Re: 4200 Dirty Press Roller

Thanks for response, However, there are all relatively new installs low counts with new style fusers and latest firmware.
Fusers was the first thing I addressed. And, again, I use only OEM toner and no tweaks.
We are currently trying Bond setting since that is a thicker paper setting.
Thanks again!

[kjg]

Re: 4200 Dirty Press Roller

Just an update.
Set Media Type Temp Setting for Plain paper from Normal 2 to Normal 3. Seems to have corrected it.
The small bump in temp also takes machine just a few seconds longer to stabilize on temp up. I believe that stabilizing time is all that was needed.
Press rollers stay clean and no toner blobs showing up.

Thanks for all the input.

Normal 3 is the default for Bond paper by the way.

[blackcat4866]

Re: 4200 Dirty Press Roller

Thanks for posting back, and congratulations. =^..^=

[qbert69]

Re: 4200 Dirty Press Roller

Thanks for the Info, OP!

I have discovered too, that if there is toner offset that it is almost always better to use a thicker paper setting! Also to note, some of Kyo's desktop MFP's...the ones that have the paper/envelope lever in the rear in the fuser WILL get offset onto the Hot Roller if just paper is being used while the fuser lever is set in envelop pressure mode!...because of not applying the correct amount of pressure (higher) to bond the toner to the paper in the paper mode. I have had to crack open several of these type fusers to clean the toner off the HR. I ALWAYS kindly inform the customer of what I am doing and how it got that way and how to avoid the issue.