Digital BW, The Print

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Phil Rose"
<pjrose@f...> 
wrote:
> The well-known "Epson Photo Paper" (S041141 in letter size) is 
> a semi-gloss paper that I believe Epson is presently marketing 
> under the name "Glossy Photo Paper".
> My question is whether or not this particular paper is properly 
> classified as "nanoporous" type. I had been under the 
> impression that a later product, "Premium Glossy Photo Paper" 
> (of orange-shift notoriety) was Epson's first product of the 
> "microporous" (or nanoporous) type. I thought that the earlier  
> paper (Photo Paper) is swellable and is _not_  a 
> nanoporous/microporous variety. Anyone know for sure?

So...no one on this list is willing/able to comment on this somewhat
OT point? As I 
recall, the terms "microporous" and "nanoporous" only started to be
in common use 
for inkjet papers after Epson brought out its Premium Glossy Photo
Paper product, 
and this happened about a year or two after Epson Photo Paper
appeared on the 
scene. I had always assumed that the new paper (PGPP) had unique
properties 
(including ozone sensitivity) that resulted from its special
"microporous" feature, and 
hence that Epson's previous paper (like Photo paper) was not the
microporous type. 
But I've been told (elsewhere) that the old Photo Paper _is_
"nanoporous" (or 
microporous). I suppose I could ask Epson. ;-)

Anyway, here's another question: Are the terms "microporous" and
"nanoporous"  
used interchangably by the inkjet industry, and if so, why? 
Certainly there is a 
difference between  the meanings of these suffixes, "micro" and
"nano"--a big 
difference. Is it merely a matter of meaningless marketing jargon? Or
are there 
actually papers available with distinctly different (smaller) pore
sizes than what are 
called "microporous"?
Enquiring minds, and all that...;-)

Any comments appreciated.

Phil