Just to clarify the above statement, which I now realize was poorly
constructed, what I meant was that the efficiency of the total ink usage
in the cartridge might be improved, since it uses a 4 color system,
where, in general, the inks get used pretty evenly (although yellow does
seem to often run low first). We still don't know if the ink volumes
are the same per color or not. It would also seem that the clear coat
volume should be higher than the colored inks, since it likely coats the
whole page, although, perhaps it only coats areas with either higher or
lower ink coverage, depending upon the gloss factor in the inks. Still
a lot of unanswered questions there.
I was rather surprised my self. Since it uses pigments I would have
also expected it to be CcMmYK. Also the setup would seem to be
similar to canon in the fact their general purpose models only use
small nozzles on Cyan and Magenta.
In all fairness the Pixma Pro 9500 only offers a 3pl min drop size,
the only other thermal based pigment printer I'm aware of, and even
that was delayed almost a year.
In the dye ink area, both Epson and Canon have 1 picolitre droplet sizes
for their some of their 4 color printers. Dot volume is more important
in 4 color printers than others, since they only use the full color load
inks, and a larger dot of ink in low density areas can be quite
noticeable. Black ink dots in the 3 PL size can show up in low density
areas as graininess. However, since I again don't know how Kodak is
accomplishing their results, they might use lower color load inks and
multiple passes or build up with several dots to avoid this problem.
Living in Canada, where the printers aren't even distributed, it is hard
to comment since I have yet to see any output samples.
Epson has a number of pigment 4 color printers. Their whole C and CX
line up of printers and all in one, all use CMYK pigment inks. These
are their low end product lines, and I cannot find any reference to the
dot sizes they are using. Unlike most thermal head designs which
require a different nozzle for each ink volume dot, the piezo head can
generate multiple sized dots by changing the vibration frequency and
length of the electronic pulse to the actuator. The 6 color Epson models
really don't require a dot smaller than 3 pl, but the four color
printers can benefit from a still smaller dot.
I can't say I am sorry that some of this information no longer makes
fascinating reading, because much of these specs (dot resolution and
density, dot size or volume, number of nozzles, numbers of colors,
number of passes, etc.) really have to be taken into context of the
specific technology involved. At the end of the day, the image quality
is what counts. However, for people who benefit from the more detailed
information, it would at least be nice for it to be available.
I'm not sure Epson offers 4 color printers other than their Stylus
series, which those are also 3pl. These printers however are not
marketed as lab quality photo printers. They have printers as low as
1.5pl but near as i'm aware they don't include their 4 color
printers.
The older Stylus (where they actually listed the picolitre volumes) did
indeed go down to 1 pl for the color versions, as did/do the 4 color
Canon models (dye inks).
Kodak is a very young player in this market. I think their first
volley of marketing simply didn't include technical specs to share, so
the natural response was "proprietary and efficient". Polite but 100%
useless.
I understand this is a very competitive market, but once the printer
gets into the hands of consumers, it is also in the hands of competitors
who probably know exactly how it works within hours. At that point, I'm
not sure what the point is of being unresponsive to questions, and
playing coy about this kind of information (such as how many colors it
uses). It also gives a false impression, since Kodak speaks of a black
cartridge and a 5 compartment color cartridge. Clear coat isn't a color,
and the use of two blacks, one photo and one text, might be helpful in
evaluating the printer as well.
I think that other than maintaining silence to protect against theft of
ideas, it is best to make other information as transparent as possible,
of those who are interested.
Art