[Misc] C552 wear in center of transfer belt

[JoeBloe]

I am seeing wear down the center of the transfer belt on some 552's and C552's. What besides the belt needs to be replaced to keep the wear from reappearing on the belts?

[allan]

Re: C552 wear in center of transfer belt

Photo of the transfere belt would help alot. Normaly if the IU's are very bad it would wear on the side. Remove the transfere belt and look into the cavity for any debris. Did you swop the transfere roller aswell?

[copier tech]

Re: C552 wear in center of transfer belt

There is a small separation claw on the fuser end of the belt, this can get a toner build up & score or mark the belt.

[Phrag]

Re: C552 wear in center of transfer belt

I've noticed that in the centre about 1" wide will be a nice worn strip right around the belt. Every aging belt has it. Never an issue with copy quality though.

[JoeBloe]

Re: C552 wear in center of transfer belt

I will check that out. Thank you very much!

[allan]

Re: C552 wear in center of transfer belt

sorry did not understand that correctly. You need to replace the transfere roller and the belt together. Copier Tech is right about the pawl that can damage the belt badly and you will see the impression on the prints.

[JoeBloe]

Re: C552 wear in center of transfer belt

The following is a picture of the wear pattern on the transfer belt.


IMG_0327.jpg

[copier tech]

Re: C552 wear in center of transfer belt

Whats the life of this belt, how many prints has it done?

[JoeBloe]

Re: C552 wear in center of transfer belt

The transfer belt unit page count is 288,134

[copier tech]

Re: C552 wear in center of transfer belt

That count is quite low, the tranfer units on this model should last over 500k
check theres no paper trapped in the cleaning unit, bit late now if there is but thats probally the cause of the wear mark.

[allan]

Re: C552 wear in center of transfer belt

I have machines that is on 700K with no problems. Could come from cleaning unit?

[JoeBloe]

Re: C552 wear in center of transfer belt

It turns out it is actually build up from carbonless paper being run on the machine. Are there any settings that will increase the the cleaning on the machine to help with this build up? It also appears on the the secondary transfer roller.

[Synaux]

Re: C552 wear in center of transfer belt

It turns out it is actually build up from carbonless paper being run on the machine. Are there any settings that will increase the the cleaning on the machine to help with this build up? It also appears on the the secondary transfer roller.

Never had a problem running carbonless when setting it to colored paper (well on c650/550s).
What paper are they using??

You can clean that scum off with alcohol and a rag, just take your time (I also carefully use my fingernails with the belt wet with alcohol to get clumps off). Make sure to get all the alcohol residue off or you will get quality issues--especially noticeable on solids--print a few halftone test pages--enough to test the entire length of the belt--to make sure there is no residue.

I believe there is a self-cleaning settings in Service Mode for the transfer belt, but it is on by default.

Increasing voltages might help it run cleaner??

[JoeBloe]

Re: C552 wear in center of transfer belt

Yes, I have been doing a manual cleaning of the belt off the machine. I'm getting a buildup of the carbonless coating on the secondary transfer roller and the belt primarily in the center about an inch across. I think is from the feed rollers in the tray.

So, is there a setting that will increase the amount of physical cleaning that the belt does to try to remove this coating?

[allan]

Re: C552 wear in center of transfer belt

Running it thru the bypass could help. The feed tyre runs on the back side instead of the front side of the paper. It could be caused by the separation roller running on the microcapsules.

Even a side mounted LCT could solve a volume problem if the bypass does not crush the microcapsules.