Re: Large format Epson printers
edmund ronald <edmundronald <at> gmail.com>
2010-12-11 23:03:30 GMT
On Epson Enhanced Matte (or Archival matte, I forget) I use my Epson
3880 with the 4880 GP driver, and push the density to max (9). I then
color manage it, and get results equivalent to the native driver,
except for slightly less gamut in the reds. In order to color manage I
would be prepared to trade off linearity for gamut. Of course, as with
any color managed printer I am aiming at a gamut that would make
non-color managed prints from sRGB look too colorful.
Edmund
On Sat, Dec 11, 2010 at 11:51 PM, Robert Krawitz <rlk <at> alum.mit.edu> wrote:
> I now have an Epson 3880 (that my wife bought me for Chanukah) up and
> running. Some observations:
>
> 1) escputil was working erratically at best with it. I've gotten it
> working, but it's possible (although I judge it unlikely) that the
> change will cause problems with some very old printers.
>
> I've also changed the -e command to get the names of the colors
> from the printer if they're not listed in the model file. It
> should therefore be possible to remove them from existing model
> files, but I'm not going to do so unless someone reports a problem
> with a particular printer.
>
> Also, the part numbers for the magenta cartridges are printing out
> incorrectly (their names aren't being decoded correctly).
>
> 2) The ink drop tuning is significantly off at 1440x720 and below (and
> the R2880 drop sizes, which aren't much different, are no better).
> At 2880x1440, the output's OK but the density is too low. That's
> consistent with with the tuning of the R2400, which also uses 3.5
> pl drops (the R2880 uses 3 pl drops). The base density of the
> R2400 at 5760x1440 DPI is 0.293, which is equivalent to 0.586 at
> 2880x1440; the base density of the 3880 is 0.479. That suggests
> that a density setting of 1.22 should work; in practice, 1.2
> appears to be a bit too high (there's a little bit pooling in the
> red and green at that level).
>
> I want to consult with Edmund about fixing this. If anyone has
> linearized the printer at lower resolutions, changing the tuning will
> throw that off.
>
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