Digital BW, The Print

Jules,

>...
> How do we end up? 
>Mixing toxic chemicals that stink to high heaven. 

>... and where can I get some glycerol?

It's readily available.  Even Photographer's Formulary has it.  See
http://www.photoformulary.com/DesktopModules/StoreSearchResult.aspx?Search=g
lycerol&tabindex=2&tabid=9&mid=37&langId=0 

And don't worry, it doesn't smell bad.

Paul
www.PaulRoark.com
________________





--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Paul Roark" 
<paul.roark@v...> wrote:
> Ernst,
> 
> If you look at the material safety data sheets, the UC inks often 
have
> mostly water and glycerol in them.  Some have glycols and probably 
all have
> "proprietary organic materials" in addition to the "proprietary 
dyes and
> pigments."  My goal was to make a bare-bones supplemental base that 
would at
> least not be incompatible with the existing Epson base (which they 
will not
> provide to us hackers).
> 
> The main things that are missing in the simple glycerol water base 
appear to
> be wetting agents and binders.  With the Epson pigs, however, the 
acrylic
> coating is the main binder, so that is not missing.  (That would 
not be the
> case with an Eboni diluting, for example.)  For a cleaning fluid, a 
binder
> is also not helpful.  
> 
> I experimented with wetting agents and even some de-foamers that 
are said to
> be better than glycol (like isopropyl alcohol), and I could not 
tell that
> there was any difference in the Epson ink dilutions (except the 
alcohol in
> some of the mixes smelled bad).  I used to prefer Kodak Photo Flo --
 a
> glycol & alcohol mix similar to what is often used in the inksets --
 and it
> looks like whatever Epson is using also works just fine at half the 
strength
> they use.  
> 
> From my perspective, the benefit of not putting anything more in 
the mix is
> that the risk of incompatibility is virtually eliminated.  All I'm 
adding is
> a chemical that is already a major part of the mix.  
> 
> If you are interested in a cleaning solution, a bit of Photo Flo 
(try 0.2%)
> could be added to give the base the wetting agent characteristics.
> 
> I'll be curious how the fade test of my UC-based mixes looks.  If 
one is
> close to competitive, I'll refine it and publish the formula.  That 
way
> there will be an Epson-based inkset out there that would always be 
available
> to everyone.  Some who think that third party pigs are somehow 
inferior
> might prefer an Epson-based formula.
> 
> Paul
> www.PaulRoark.com 
> ______________________________
> 
> -----Original Message-----
> From: Ernst Dinkla [mailto:E.Dinkla@c...] 
> Sent: Saturday, July 03, 2004 1:08 PM
> To: DigitalBlackandWhiteThePrint@yahoogroups.com
> Subject: Re: [Digital BW] Blackless printing
> 
> Paul Roark wrote:
> 
> > I'm not sure that is the case.  The Eboni is the one that is much 
more
> > neutral than the MIS version.  I have a test inkset made with UC 
inks and
> > that inkset's "warm-carbon" curve seems to be more neutral than 
the MIS
> > version.  (Perhaps it's my new base -- real complex: distilled 
water and
> > glycerol.)
> 
> Paul,
> 
> Is that all, distilled water and glycerol ?   I have  a 10000CF 
> now and it will be converted to MIS 7600 but I think a cleaning 
> has to be done in between. If that base would do the trick then 
> I'm less worried.
> 
> John Nollendorfs mentioned glycerol as a component of the Ilford 
> Archiva inks ages ago. It has the thixotropy and the retarder 
> qualities to keep pigments suspended and nozzles open.
> 
> 
> Ernst




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