3050 and 50# paper

I am having problems in the delivery with the tail of the sheet not dropping, and the next sheet running into it. This folds the sheet over in the stack. The job is just black ink, 2 sided (book).
I have tried static guard on the parts in the delivery, to no avail.
50# offset paper, 140 degrees. I have tried different temps, but it makes no difference.
Any thoughts ?

 

Hi,
when you speak on delivery you mean the bridge right? In that case check the stop fingers...

 

Maybe stacker is the correct term ?

 

Hi,
The problem occur before or after printing?
The paper remain stopped by stop fingers before Print or not?
If the problem is on the delivery (stacker) check the bracket, maybe the vacuum not work properly

 

Sounds like a static issue? Sheets hang up suspended and next one folds it over? Try a small humidifier aimed at the stacker. Are you getting the relative humidity etc...message? Mine pops up under 35% RH and on go the humidifiers. Worst case you can always print to the proof tray. PIA with books though.

 

Thanks for the ideas. I think I wouldn't have this problem if the paper was long grain. With it being short grain, the sheet is too flexible. I don't get any RH warnings, but I don't know what the humidity is in the shop either. I cant change the grain direction, so I guess i'll have to fight through it.
Thanks again guys.

 

Yes short grain 50# will sure break balls!