Digital BW, The Print

Thanks Paul.

Jules

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Paul Roark" 
<paul.roark@v...> wrote:
> 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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