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You're joking, right? I was talking about interchangeability between 4 same presses. Why on earth should i change laser power where i can easily change curves for the same outcome? And again - tips and tricks on how to overcome it locally is not what i'm looking for.

No, we didn't. Because it's hard to control proper amount of reducer.

How? We have same blankets on all presses. We've tried changing with new ones (all 4 at ones with packing of course)

We use brunner strip, so they are always there. And again - no slur or doubling on other presses, and problem one prints low dot gain

No

Also one will have a lot of pain printing second turn if using conventional inks and powder. Noisy flat tints as a bonus and a lot of work with pressmen to convince them they there can be really less water, jokes aside. Plus you'll probably see a lot of interesting stuff like blankets flaws...

while exporting pdf's do you turn on "apply geometry"? And just a thought - if second location have prinergy also, you can export whole job

Oh well i completely forgot to use imagemagic. Thank you for that. BTW you pics of comparing am/fm ink film thickness are literally the thing we use to explain how it works :) technically it should look like on the right there are a lot of water in the ink, but i think it's difference due to...

@danremaley i'm not sure what you meant by that. we have system brunner's option ok-balance on all presses and use system brunner's strip

I would agree, but say 2 years ago all 4 presses printed almost same

Ink/Water stripes are cheked on regular basis. Oscillators always on, also bridge roller and delta mode always on too. Operator was same last time we checked between two presses.

No, any uncoated paper 65-160 gsm prints quite same (regarding dot gain)

In system brunner stripe we have only 50% This is 14 dot gain on 50% patch An this is 8% on 50%

Well of course not. Each press equipped with it’s own grapho-metronic fm19. But if we measure press sheet from one press on other - readings almost same.

One more funny thing. Dots and slurs produced by this press on coated stock on M & Y sections looks super sharp with very defined edges (true round dot) as if the situation like all other sections and presses prints badly

Well, probably it happened over time, but while that time we had some issues with lots of different inks and fountain solutions, plates also. And this particular press most of the time prints uncoated stock. So if something happened we've probably missed it. If you're talking about big changes...

Looks like perfect, but far from it actually. Because just 1 year ago all 4 presses printed almost same (plus minus tolerances) but now 1 stands out and only on coated stock. Mystery

We too have different curves for coated and uncoated. Inks are literally same - all 4 presses fed from same barrels through technotrans ink transporting system

Thanks, but we've excluded all that and again, same plates on other press doing just fine

Operators also different. What I can't understand is why there is a problem only on coated stock. If printing uncoated - all presses shows almost same dot gain