Problems with Cyan Toner Sticking to Coated Stocks

So here's an interesting puzzle I've been dancing with for a few weeks.

Any time I have to print something with heavy cyan coverage on coated (particularly gloss coated) stocks, the second print side has a habit of acting more like a scratch-off ticket. I do even a light scrape test and the toner just flakes right off.

The first print side sticks fine. I can claw at that like a rabid badger and the color sticks.

-First thought was it may be a stock issue (crappy coating), but it's only the second side that exhibits this behavior.

-Also, just finished running 3k sheets with a mostly grey design and both sides have perfect toner adhesion. On that same stock, a cyan heavy print scrapes right off.

-Contact arc is in spec (actually a little tighter than spec as an experiment) and that doesn't do anything.
-Pressure roll has been cleaned to a point where a British matron would be impressed. So I think I can rule out contaminants from that.

Very confused. Any ideas out there?


Edit: I guess this could be a continuation of this thread... but I have Friday brain.
http://www.colorprintingforum.com/xerox-iGen/poor-toner-adhesion-stocks-15517.html

 

Hey,
You can also try to adjust thickness for that specific paper, sometimes heavy stocks will "suck" the heat out of the fuser, and when it print side 2, the fuser is'nt hot enough.

go to your stock library at your PSIP, click twice, on the media that fails, and adjust thickness in there, maximum is 500.
and be sure it is set to gloss if it is gloss.

It worked here, on our iGen150, and maybe worth the try

Sorry for my english

 

this happens to us with silk /dull coated stocks- have you tried running the job in enhanced mode?

 

I think what happens is fuser oil is transmitted to side 2 as it passes over the pressure roll when printing the first side. When the second side prints it already has a thin coat of oil on it and it could cause the toner to flake off.