Thank you Walker.
Icefields is not a RIP. It simply converts grayscale or color files into stochastic bitmap, primarely for imagesetters. But better than AGFA or Heidelberg (Tod Gangler's opinion).
Alas, I think Icefields and support are not available anymore.
Last time I had a discussion with the developper, a CUPS driver came out as a possible solution to drive Epson from Icefields without a RIP. Of course, I have no experience with CUPS...
"the Epson driver will do a random stochastic just fine"
Not my opinion. Things would look like some aquatint, but they don't. Epson does not a trulely random job.
Jon Cone told me once: "there is no random in anything printing".
And Roy Harrington: "Dithering is often referred to as stochastic or random placement. It's not truly
random - or mathematically random".
That can't be discussed!
We're talking negatives of course; you won't see what's not random in a positive inkjet print.
I agree that printing only one channel or some channels with low ink limits will look pretty random to a certain point. But at that point D-max is too low.
That's actually when the idea of printing several passes (is this the correct english term?) in registration came.
Then I fear some moiré or electonic noise, because Epson doesn't print in a true stochastic way. I suspect its algorithms will make the same job everytime one prints the same file. Icefieds will generate differents files every time you hit "convert", with different dots placements. No moiré. Feeding could make some resonace and banding, but this can be adjusted.
I have tried AccuRIP a little. I could be wrong, but it looks like the halftone is converted for Epson to be able to print it, using its dithering again... I see it as an Epson reproduction of a halftone image.
Like printing PS's bitmap: when a lot of ink is needed, Epson's patterns show for sure.
If you print bitmaps with the Epson driver, some conversion(s) must take place.
What I'm looking for, is to truely bypass Epson's dithering, which could be impossible.
I'll investigate CUPS.
Maybe you could show some direction to a novice?