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Digital BW, The Print

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Re: [Digital BW] Low gamut pigments

2009-08-09 by john dean

Paul, 

What would happen if you simply used the Vivera glop as a base and didn't add anything to it but the dilute light gray? 

I wish HP had a desktop model of this 12 channel inkset to play with.

john





--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "pr_roark" <pr_roark@...> wrote:
>
> John,
> 
> 
> > Never heard of 2-prrolidone. and  Triethanolamine.
> 
> You can Google much of this and get a picture of what they are doing.
> 
> > And there is a chemical called Alkyldiol, that they describe
> > as Proprietary. That sounds mysterious.  It accounts for 7.5%
> 
> All the really secret stuff is hidden from view. 
> 
> Note the small amount of carbon.  Then go and compare their color pigment MSDS.  Where is the pigment?  Hmm ...  
> 
> > wetting agent?
> 
> You don't need much wetting agent at all -- like 1%.  In my C6 formula the Photo Flo is 10%, but that's becuase it's mostly water and glycol.  It's there for the glycol as much as the weak wetting agent.
> 
> >... water making up 80% and the Carbon pigment less than 1% ...
> 
> Expensive water.
> 
> > So, if you take the HP gray dilute it with gyclol,  
> > distilled water, and a wetting agent, that's it? 
> 
> I tend toward more glycerol and less glycol (like the Epson glop) -- better specific gravity and lower clogging from what I can see.
> 
> > I wonder why so much of that Alkyldiol is necessary?
> 
> I think that is a generic description and where they are hiding the color pigs as well as other components they don't want to disclose, (but it's been a while and I'm answering without going back to my notes).
> 
> Paul
> www.PaulRoark.com
>

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