Ikon CPP550 (Pro BH 5500) Black band on 17" color prints from fiery but not copy?

[Desert Rat]

Re: Ikon CPP550 (Pro BH 5500) Black band on 17" color prints from fiery but not copy

Mick01,
Thank you for that information. Would you happen to know if the whole assembly would fit and work.
I have another belt coming in for this machine. I'm just curious, the transport assemblies look the
same. But I have not had the chance to do a side by side comparison.

Thanks

DR

[Mick01]

Re: Ikon CPP550 (Pro BH 5500) Black band on 17" color prints from fiery but not copy

The transfer belt assembly from C500 will fit into a C6500/01. There are a couple of issues though which i will outline.
C500 transfer belt is thicker so 1st transfer may be insufficient if fitted to a C6500/01
C6500/01 transfer belt unit has been modified to stop transfer belt marking inside (causes dark line in the sub scan direction). This used to be a big problem on C500 and the early C6500's
Hope this helps

[Desert Rat]

Re: Ikon CPP550 (Pro BH 5500) Black band on 17" color prints from fiery but not copy


Mick01,
That was a lot of help, now I won't waste my time trying
to figure it out. Thank you.
Today I picked up the transfer belt and will install it
tomorrow.

DR

[Mick01]

Re: Ikon CPP550 (Pro BH 5500) Black band on 17" color prints from fiery but not copy

My Pleasure,
Hope it all goes ok with the fitting of the transfer belt

[Ab_NL]

Re: Ikon CPP550 (Pro BH 5500) Black band on 17" color prints from fiery but not copy

Hello desert rat,

can you add some samples to your call as I can see how it looks like.
It looks like we are experiencing the same problems on a couple of engines at our customers.
After we placed the new firmware (70-GN3) together with the new type of drums (DU104) these problem seems to appear.
replacing the developer (including the developer unit) temporarily solves the problem.
Also changing the drums between Cyaan and Black solves the problem (i think, also temporarily)
Changing the AC bias fine adjustment for black from 0 to +5 seems the best solution.

What is clear to me is that this happens only on heavy paper (>250 grams)
If you select the same drawer but put it on a 200 grams setting there is no image problem.

I am very interested in the scan of your problem, can you attach this one please?
stripes.jpg

Regards, Ab

[Desert Rat]

Re: Ikon CPP550 (Pro BH 5500) Black band on 17" color prints from fiery but not copy

Ab_NL,
The sample you provided, as I recall, is very close to what I saw. I took the advice of
Shadow and Rrodgers and cleaned the mag roller. I also replaced the dv mix and
adjusted per the book. This happened last year and that customer has gone out of
business and the next customer with that machine has called me for a check out. I have
not seen that unit now for over 6 months.
Generally when I swap things around I am looking to see if I can make an improvement in
the problem. Then I will have an idea of what I am looking for, a bad drum or charger etc.

If you do this remember to remove the toner sensor. After that I vacuumed out all the toner
and dv mix. Cleaned the mag roller with the fiber filter and wiped with alcohol. That took
care of the problem as far as I knew.
When that customer calls back in I will check this out. My guess is that the problem is gone.


Hope that helps

DR

[Ab_NL]

Re: Ikon CPP550 (Pro BH 5500) Black band on 17" color prints from fiery but not copy

Dr,
thanks for your reply, even though it's a long time ago you have had this problem.
We will sure test your solution on one of the upcoming calls, unfortunatly we have to many of them at this moment.
Can you confirm that the problem is only visible on the output at a paperweight-setting above the 250 grams?

When I load paper above 250 grams in the tray but make the selection as if it is 160 grams, there is no problem.
Also, when selection is above 250 grams and there is 100 grams paper in the tray, the band/stripes are visible

We see this particular problem in two different shapes: (on several engines)
a) In a testrun of 10 pages directly on page 1 but not anymore on page 2 , 3 and further
b) In a testrun of 10 pages not on the first 2-3 pages but from page 4 and further on all pages.

Any information on this issue will help, thanks in advance
If interested I will upload another sample if you want...

Regards, Ab_NL