Ricoh MP 5500-8000 Series, Quality Problem, Toner or Drum???

[JonManchester]

Re: Ricoh MP 5500-8000 Series, Quality Problem, Toner or Drum???

As for cleaning Mag rollers we use acetone. It brings any metal roller back to new again. Just be careful using it, plastic and mylars don't like it. We used to scrub mag rollers with a brass brush ( Not Steel ) and it worked good.
Also when cleaning any DV unit always clean the doctor gap, it gets buildup on it and affects copy quality.

[Bantams]

Re: Ricoh MP 5500-8000 Series, Quality Problem, Toner or Drum???

I've heard of the Problem happening on the 9002 my friend fixed that by adjusting the gap between the mag roller and the doctor blade

[Codex]

Re: Ricoh MP 5500-8000 Series, Quality Problem, Toner or Drum???

UPDATE

We have still the same problem, yesterday changed Developer in a machine that made only 20k with it........nothing works, only changing developer seems to resolve the problem for two or three weeks.....This is a BIG BIG problem to us.

[Iowatech]

Re: Ricoh MP 5500-8000 Series, Quality Problem, Toner or Drum???

UPDATE

We have still the same problem, yesterday changed Developer in a machine that made only 20k with it........nothing works, only changing developer seems to resolve the problem for two or three weeks.....This is a BIG BIG problem to us.

I don't know if this is going to be helpful even a little bit, but when I went back and reviewed your initial post it sounded something like a problem I encountered a while ago on faster machines like these.
What was happening in my case was that the users of some faster machines weren't using them enough, and the toner feed wouldn't run long enough to keep the level constant. That would cause print defects similar to what you described. If I did some forced toner adds the print quality would come back, but not for long.

If forced toner adds make no difference in print quality on your machines, please ignore the rest of this post as it will be a waste of time.

Anyway, reducing the value of the toner feed time adjustment in service mode (sorry, don't have the manual handy, but it is somewhere in SP2 mode) worked sometimes, as on the machines I was working on that increased the time the toner feed system was active.

[Codex]

Re: Ricoh MP 5500-8000 Series, Quality Problem, Toner or Drum???

I still reduced the value for toner feed from 850mg/s...to 700mg/s in almost all machines..... But it didn't work.... We have customers that use the machine the whole day and they stop it only for one hour to go to eat... But they have the same problem as customers that made only 50 copies /day..... Last week Ricoh provide 20 developer for free... This sounds like they known that there is a problem with the type 9002 toner.... They wanted back the old developer to analyze it in Netherlands, there is sone problem when the type 9002 toner mixes with the developer.......

[trc]

Re: Ricoh MP 5500-8000 Series, Quality Problem, Toner or Drum???

In those boxes to decrease toner ratio, you have to increase the value of that sp....standard is 850....try 1100...it will work !!!

[mgi2003]

Re: Ricoh MP 5500-8000 Series, Quality Problem, Toner or Drum???

Do you solve your problem because i have the same problem ?
i have many machine with new Developer and New drum and after 5000 copies is not black. i have the same toner and the same developer.

and me in the last year i have problems..................................

[Iowatech]

Re: Ricoh MP 5500-8000 Series, Quality Problem, Toner or Drum???

Do you solve your problem because i have the same problem ?
i have many machine with new Developer and New drum and after 5000 copies is not black. i have the same toner and the same developer.

and me in the last year i have problems..................................

Well, for me alone I did have a problem very similar to what you are going through back in the day, and I posted my answer in the hopes that you would find the solution I found would be useful.
Apparently my response didn't help even a little bit.
Fine. I apparently have nothing more constructive to share, so I'm done.
Good luck.

[Codex]

Re: Ricoh MP 5500-8000 Series, Quality Problem, Toner or Drum???

Well, for me alone I did have a problem very similar to what you are going through back in the day, and I posted my answer in the hopes that you would find the solution I found would be useful.
Apparently my response didn't help even a little bit.
Fine. I apparently have nothing more constructive to share, so I'm done.
Good luck.

Hello iowatech
I checked your suggestions... And as i said the problem still occurs on both types of customers, that ones that uses the machine the whole day and the other ones that made 50 copies a day...... I tried to reduce the toner feed time (as per manual reducing the time it increases the toner ammount).... But even if i touch nothing after a while the problem is back.....

[Bantams]

Re: Ricoh MP 5500-8000 Series, Quality Problem, Toner or Drum???

Change the Filter on the back I've had this same problem.

[Codex]

Re: Ricoh MP 5500-8000 Series, Quality Problem, Toner or Drum???

Hello
I changed filters in some machines, and i removed the filters in others for test.... No difference between them.....

[teebee1234]

Re: Ricoh MP 5500-8000 Series, Quality Problem, Toner or Drum???

As for cleaning Mag rollers we use acetone. It brings any metal roller back to new again. Just be careful using it, plastic and mylars don't like it. We used to scrub mag rollers with a brass brush ( Not Steel ) and it worked good.
Also when cleaning any DV unit always clean the doctor gap, it gets buildup on it and affects copy quality.

Ditto on cleaning behind the doctor blade. It builds up a hard crust over time and reduces the dev brush height, giving light copies. There have been many times I have had to educate fellow techs on this after they have changed developer several times with no improvement in quality.

[slimslob]

Re: Ricoh MP 5500-8000 Series, Quality Problem, Toner or Drum???

Ditto on cleaning behind the doctor blade. It builds up a hard crust over time and reduces the dev brush height, giving light copies. There have been many times I have had to educate fellow techs on this after they have changed developer several times with no improvement in quality.

Ricoh does make a tool for doing this. See the service manual for the Pro 907EX for how to use.

A2949560 Paper Dust Cleaner - 5pcs/set

[Vollegaaz]

Re: Ricoh MP 5500-8000 Series, Quality Problem, Toner or Drum???

The last 2 or 3 months i've seen a lot (+20 different machines) with that strange fuzzy/blurred image, after replacing the drum it disappears, but after a couple weeks it seems to come back...even more strange is that the problem occurs often and only during the morning, the first 100-200 prints of the day, so you should think its more like a humidity issue....but as mentioned, after replacing the drum the problem is gone for 3-4 or 5 weeks

light copies is an issue that i see more and more on these machines, developer with only 100k has to be replaced and so on...

I've heard there's a fuzz with bad toner in the field, but no official communication so far...

[Codex]

Re: Ricoh MP 5500-8000 Series, Quality Problem, Toner or Drum???

Ditto on cleaning behind the doctor blade. It builds up a hard crust over time and reduces the dev brush height, giving light copies. There have been many times I have had to educate fellow techs on this after they have changed developer several times with no improvement in quality.

Hello... Thats the first thing we do on every developer change.... We remove the doctor blade to clean it... But after 50-100k the problem is back....