Archived from groups: comp.periphs.printers (
More info?)
jbuch <jbuch@CUTHERErevealed.net> writes:
> SpeedyGonzales wrote:
>
>> I have a question it seems that several different ink printers does with
>> greyscale printout.
>> I have a digital color picture and converts it to greyscale. I want
>> to print
>> out as on screen, black and white with greyscale tones. When I print out the
>> picture, the light grey area gets a red/pink tone in the printout, and I
>> wonder why....and what I can do to correct this behaveor.
>> I use a Epson Stylus Photo R300 and all Epson drivers, ink and paper.
>> Speedy
>
> I remember reading about the use of special inks sets in color
> printers to allow good reproduction of black and white photos and good
> gray scales.
"Quadtone" B&W inksets (or six-tone, for six-color printers), yes.
Then you need to either play games with some of the curves (different
curves in Photoshop for different printing approaches) or use a
special plugin or RIP or something to get the right thing to happen in
printing. But they produce, at their best, really gorgeous smooth
tonality.
> Some printers make a "fake" gray by mixing CYM and slight errors in
> this ink mix would give color tones.
>
> Ordinarily, just black ink doesn't give a good gray scale for
> photographs, so I have read.
Same reason the photo printers are six-color -- the density control
(dot size control) isn't good enough to produce all the different
shades of gray needed from one black ink. Which is why the Epson 2200
has both a black and a gray ink in it, for example. (The Epson R800
may have finally taken dot size control to the point where it can get
the whole density range needed from one very dark ink, for both black
and cyan and magenta; at least the reviews suggest it, I don't own
one yet.)
--
David Dyer-Bennet, <mailto:dd-b@dd-b.net>, <http://www.dd-b.net/dd-b/>
RKBA: <http://noguns-nomoney.com/> <http://www.dd-b.net/carry/>
Pics: <http://dd-b.lighthunters.net/> <http://www.dd-b.net/dd-b/SnapshotAlbum/>
Dragaera/Steven Brust: <http://dragaera.info/>