[Misc] C454 - Paper comes out curly (approximately from the half)

[Laserbeam]

Hello,

I am so desparate!

A bizhub C454e (total Count around 1,5 Million) shows the following problem: The paper shows about halfway a wave-line shape.

I habe already changed the following parts:

1. Paper Exit unit
2. Fixing unit
3. Reversal unit
4. Fixing drive assy

The registration roller drive smooth (all 4 bearings are oiled)

but unfortunatelly the Problem still exists!

any other ideas?

[Phil B.]

Re: C454 - Paper comes out curly (approximately from the half)

Hello,
I am so desparate!
A bizhub C454e (total Count around 1,5 Million) shows the following problem: The paper shows about halfway a wave-line shape.
I have already changed the following parts:
1. Paper Exit unit
2. Fixing unit
3. Reversal unit
4. Fixing drive assy
The registration roller drive smooth (all 4 bearings are oiled)
but unfortunatelly the Problem still exists!
any other ideas?

moisture in paper?
cheap paper?
what are fuser temp settings at?
how long has this problem been visible?

[tsbservice]

Re: C454 - Paper comes out curly (approximately from the half)

Sample looks A3, what about other formats A4, A4-R? Does paper waves are always at the same space, relatively to paper size?
Not sure but, fuser speed adjustments on this model available?

[Laserbeam]

Re: C454 - Paper comes out curly (approximately from the half)

@ Phil. B.

the paper can be excludet! I have tested several qualities, the problem still exists.

@tsbservice,

yes, on the picture in the attachment, it`s A3-paper. That`s the best way to see it. However, the problem also exists on A4 or A4R.
I tried to change the setting from -20 to +20 in the fusing fixing speed, but unfortunately without success.
The problem occured suddenly and now every copy/print.

[tsbservice]

Re: C454 - Paper comes out curly (approximately from the half)

Try to crash stop the machine(open the door during preferably A3 copy/print cycle) and look exactly at which section the paper curl/wave occur. I would NOT exclude registration section from being the culprit at this count. Don't panic and take advantage of problem shows up on every page

[Laserbeam]

Re: C454 - Paper comes out curly (approximately from the half)

that's what I`ve tried with A3.
The location where the problem occurs is between fixing unit and paper exit unit. Between registration roller and etrance fixing unit the paper is not curled!

[Toxic]

Re: C454 - Paper comes out curly (approximately from the half)

I had similar problem on c203 with 1mil,it was fusing drive problem,worn bushings and scraped that machine,not worth repairing.
But if you replace all that and does not solve problem i have no idea.

[Tom]

Re: C454 - Paper comes out curly (approximately from the half)

6 year old machine with 1.5 million, is an upgrade a possiblity. You start seeing weird problems with age and mileage.

[Coptech]

Re: C454 - Paper comes out curly (approximately from the half)

On different paper sizes and directions, I assume the distance from the lead edge to the beginning of the crumpling is the same. So that is the distance from the over-driving area and the good section, or the dragging section and it's prior drive. Look at the distance between registration and fusing to see if that is the same as what I am describing. From there, either the fuser is turning too slow and the registration is turning faster, or the fuser is normal and registration too fast. I really doubt the second one. Been many years since I worked on Konica products but on the old 8050, there was a fuser speed adjustment where you had a certain paper that you ran in some adjustment mode and they gave a swatch with two shades of blue. The speed was correct when the color was between the two shades of blue. Just a thought and an idea of how to troubleshoot it.

[Synthohol]

Re: C454 - Paper comes out curly (approximately from the half)

just a suggestion, change the paper type to thick 1 or 2 and see if it still happens, this will electronically change the timing/speed.
if it still happens in all paper types then i would start changing parts again.
if it goes away with a thicker setting maybe try fresh firmware.
just .02 for ya

[blackcat4866]

Re: C454 - Paper comes out curly (approximately from the half)

What about clutch CL8? Are you getting 30-03 jams?

[emujo2]

Re: C454 - Paper comes out curly (approximately from the half)

It's been afew years since I was in the field, but I seem to remember this as a common problem on anything with a 2nd transfer roller. I think replacing this solved the issue.

[tulintron]

Re: C454 - Paper comes out curly (approximately from the half)

@ Phil. B.

the paper can be excludet! I have tested several qualities, the problem still exists.

@tsbservice,

yes, on the picture in the attachment, it`s A3-paper. That`s the best way to see it. However, the problem also exists on A4 or A4R.
I tried to change the setting from -20 to +20 in the fusing fixing speed, but unfortunately without success.
The problem occured suddenly and now every copy/print.

Good Morning.

All the obvious has already been said. I would check the fusion loop sensor.


may have been broken by time of use or improper removal of paper.

[Laserbeam]

Re: C454 - Paper comes out curly (approximately from the half)

@ emujo2
I have just installed a new tranfer roller, unfortunately still the old problem!

@ blackcat4866
I replaced the whole Fixing drive assy! In this assy there is a new CL8. no jam 30-03 occured.

@ Synthohol
the change of paper type to thick1 or 2 and Firmware update are also unsuccessful.

[Gaffers01]

Re: C454 - Paper comes out curly (approximately from the half)

Hi looking at the copy out the flat bit before the wrinkles start looks like a similar distance from reg rollers to fuser
i know you said "The registration roller drive smooth (all 4 bearings are oiled)"
i would replace those bearing on both registration rollers and see if there is any improvement.