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

[Barry97]

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

Does it happen on all paper sizes? What size is that in your photo?

It is every size. On all the trays.
The paper size was 11 x 17

[techsxge]

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

I even tried the firmware update. Still wavy!!!!

Looks like either high temperature in the fusing unit or a motor is going to slow.


EDIT: bad temperature on the fusing unit could be because of hot enviroment. try to move the machine to a cold room, for example a kitchen or bathroom and test it there.

[Barry97]

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

Looks like either high temperature in the fusing unit or a motor is going to slow.


EDIT: bad temperature on the fusing unit could be because of hot enviroment. try to move the machine to a cold room, for example a kitchen or bathroom and test it there.

I am in a workshop. Always at room temperature in the shop.

[tsbservice]

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

It is every size. On all the trays.
The paper size was 11 x 17

And did you remember since when this started? All of the sudden or graduatly?

[allan]

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

I replaced the whole unit. print out still curls. There is no paper jam. While it is printing I did open to see where it starts, it happens after it passes the fusing unit.
[ATTACH=CONFIG]54333[/ATTACH][ATTACH=CONFIG]54334[/ATTACH]
this is what i get.

I checked the gears and they all are fine. No wear on them.

Its not about wear. Did you do a tooth count to be sure? Like asked if it started over time its not that. But...

[Barry97]

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

And did you remember since when this started? All of the sudden or graduatly?

It happened all of a sudden. I am still in training.
I have replace the fusing drive.
Changed the fusing unit too.
Replaced the exit and reverse unit.
Transfer roller.
Cleaned the rollers changed the paper.
Tried to change the speed and the temperature.

And the ripples start after the fusing unit. tested a newer fusing unit.

Still does that ripple/wavy printout.
Just wondering if there is a problem with the frame?
Can this caused by bending of the frame?

[Barry97]

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

Its not about wear. Did you do a tooth count to be sure? Like asked if it started over time its not that. But...

they are 22.

[tsbservice]

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

It happened all of a sudden. I am still in training.
I have replace the fusing drive.
Changed the fusing unit too.
Replaced the exit and reverse unit.
Transfer roller.
Cleaned the rollers changed the paper.
Tried to change the speed and the temperature.

And the ripples start after the fusing unit. tested a newer fusing unit.

Still does that ripple/wavy printout.
Just wondering if there is a problem with the frame?
Can this caused by bending of the frame?

Remember what was charged before it started that is my best advice.

[allan]

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

they are 22.

Is that a C454 or C454e you are working on?
Consider starting a new thread. Its 38 replies in and some techs will not even look at it.

[shuja74]

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?

Change Duplex unit problem will be resolved. I face this issue with so many C454e.

[CP-1015]

I think high humidity, too. I would try with a new paper package.

[blackcat4866]

When you say "new fuser", is it really a new fuser or repaired or rebuilt? Otherwise yes, try known good paper.

Do you have a photo of the symptom? Is there a finisher installed? =^..^=

[Kapral]

I had very similar issue and the problem was with the reversal unit - it's that thing that guides the paper after it leaves the fusing unit, that can direct the sheet into duplex and so on. If the gears are not proper (for example someone replaced it with unit from slower machine) You might encounter this kind of problem. It will work, it' won't jam (at least not every time), but it will curl paper.

image.png
EDIT: and i mean all three, not just those two coupled together.