mp 4054/5055 CURLING PAPER

[Gift]

I had the same issue and you can't really do a lot since ricoh was cutting costs and left out the de-curling rollers. Lowereing the temps might help a little but can also have side effects. The best approach is doing a test with some different paper brands - I've noticed quite some differences in curling tendency.

Exit rollers should be checked of course and you can modify the internal tray if the paper does "roll out" like ancient papyrus rolls.

[Zeldaman]

Hi there!
Had this problem only once, and it drived me crazy. Tried other paper etc... and in the end there was an amount of tonerdust on the thermopiles.Cleaned them, no more curling!!!
Greetings...

PS: I can´t upload my example-pictures, sorry

[digicor]

FYI i did replace the fuser with a fuser from a machine that was not curling the paper, and the paper came out curled...

[Zeldaman]

Hi there!
The thermopiles are IN the machine, not in the fuser! When there´s smudge on them the temperatureregulating goes "mad" and curled paper occurs.
Greetings...

PS: this an example of my problem.

[Gift]

It'll be great to know if this is going to fix digicor's issue, too.

Themopile is not the "click frog" thermo-fuse but some sort of contactless temperture reader.
Sounds logic that a dirty sensor might lead to higher fuser temps wich can increase curling.
Hard to imagine that the issue totally goes away though.

[digicor]

[QUOTE=Gift;2378444]It'll be great to know if this is going to fix digicor's issue, too.
thats exactly what is happening!!! ill check the thermopiles , and yes im sorry the thermopiles are not in the fuser
doh.... Thanks a million buddy,
,

[Gift]

Kudos goes to Zeldaman - don't forget to print some samples before cleaning to see how much it changes.

[kplow1986]

u need modified exit roller and exit tray to fix this problem.. install tray heater also is the way to fix it

[copyboy99]

I HAVE 6 OF THESE MACHINES IN THE FIELD, ONLY TWO ARE CURLING TO PAPER, IVEE TRIED THE FUSER REPLACEMENT, PAPER SET THE PLAIN PAPER 1, THESE IS NO CHOICE FOR PLAIN PAPER TWO... LIKE MY MP C6004, IF THERE IS WHERE IS IT LOCATED?
OR IS THERE ANOTHER SOLUTION?IS IT IN THE EXIT ROLLER ASSMBLY AFTER THE FUSER? LIKE THE COLOR MACHINES THESE ARE SWITCHED WITH FIN OR NO FIN, THESE BOTH HAVE INTERNAL FINS, THE ONES THAT DONT CURL DONT HAVE FINS
tHANKS

Could you check SP 3260-001, 002, 003 with built-in Humidity sensor on these device, this will give idea about how much is the Humidity near that device.
Screenshot 2023-06-01 215155.jpgScreenshot 2023-06-01 215302.jpg

[luca72]

FYI i did replace the fuser with a fuser from a machine that was not curling the paper, and the paper came out curled...

this smell of wrong exit roller type, try to check the shape of the black plastic roller above the delivery tray, must be "bombed", like a beans, not straight!