We use two lithorones a s40p and a 28. We also use a mits f16. Only the Komori's are giving us a color stripping problem. Our fountain solution is the same for all three presses it comes from a RO filter and mixing station. All presses are using same blanket material, plates and roller material. Have tried three different ink venders with same results.
Found that we have to de-glaze the komori rollers a lot to prevent stripping where mitsy we just do regular roller maintenance. Any ideas would be appreciated.

we have stripping as in washing out when we get calicum in the rollers. sometimes we have to do a calicum wash once a day. thats on a ls640 and a ls540sp usally the magenta and sometimes cyan

We have an older lithrone 28 and a newer spica 29. we also have a slight stripping problem on the lithrone 28. we use calicumfix from bottcher and it work good. I've noticed the small copper rider roller in the ink train get pretty funky if we go too long without a calicum cleaning. the spica doens't have that problem.......

Do you have roller chillers? If so they might be set too low

We run our 40 @80 degrees, our 28 @ 75 degrees.

Good Luck

Try a vinegar water mix. Works for us as your last wash. 50/50 probably would work.

I had the same problem with our ls we tried all kinds of calcium rinses some would help for a day or two but what finally got ride of it was switching to a lower pigment Ink. Vanson Vs 3 or 5 work well the 5 dries better also k&e pertech run good but like to feed back to the metering roller. haven't had roller stripping since!!! we also rinse the rollers with salt crystal remover every couple of weeks. Just had a komori demenstrator tell use the best thing to use is lime away mixed 50/50. but I would say just switch ink!!

Sounds a lot like emulsification of the ink to me.
You're running an RO unit, that tells me your incoming water supply has issues, perhaps with high calcium but a unit like that is designed to 'filter' these out to a large degree.
Bear in mind that Komori's run solid copper pipe 'steels' - they're not plated. So I'd expect the ink receptivity to be very good. Check damps are not too high, check alcohol is around 5-8% and if you have a conductivity meter aim for around 1650 at 9 degrees C, ph around 5.5. We have run Komori's for years and never - repeat never, had stripping problems.

When I ran a 28 inch lithrone. We would have long runs using 26 inch paper and the ends of the rollers sometimes have problems. I think this is due to the water on the edge of the plate getting in the ink and then working its way into the rollers. The gum/etch and whatever.
Bottcher made this cleaner that worked pretty good when we had this problem.
It wasn't the febo clean. it was a liquid cream color stuff.

i was getting this problem also and came across this site!.took advice of richardk and problem seems to be gone .i had to bring my fount up to 7% to
achieve 1650 conductivity . thanks richardk.

Glad to hear you cured it. I hear Dublin serves nice cold Guinness - sorry subtlety is not one of my best points!