paper creasing - anyone know why see pic???

Putting various stocks through our D242 and getting inconsistent paper creasing and crunching along the length, through middle of sheet. Rippled creasing. See image attached of an A3 sheet.

Seems to happen more on a 80g A3 sheet, but on many other stocks too. Sometimes A3 80g runs fine, so not sure where in paper path its occurring...

Any obvious cause I can fix?



Cheers
Paul

 

Face up/ down? Is it attached to a finisher or feeder?

 

Hi thanks for looking at the query. Its a duplex print job, paper from oversized tray6 feeder, no finisher attached.

Stumped to say anything other than stock problems, but it is inconsistent and the same stock goes through another machine without the creasing issue... Have also been seeing it on some other stock weights too. Just wondered if there is somewhere in the paper path that is rippling the paper. Think it must be just prior to printing as the prints seems to be over the top of the small creasings in the rippled areas, if you know what I mean...

 

Same problem on a Xerox 700, change stock. Engineers had no answers. I thought fuser temp/speed was the cause, as card stocks no problems.

Regards

Chris

 

Yes, I did think fuser temp may be impacting, but unsure.

 

Xerox Engineer did mentioned, but not verified that the fusers had been updated/modified. We now use a KM1060L!

 

Do a hard stop at the High Cap exit, then at the pre-reg, Fuser ect untill you can see where it starts to wrinkle. That's really the only way you will know for sure.

 

Thanks, makes sense, will give it a go and see where the wrinkles start to appear on paper as it passes through