Digital BW, The Print

Hi Della,

You don't ask easy questions do you!

In my own terminology there are two or more types of pigmented inks - those
where dyes are bonded on to a pigment particle, and those where the pigments
are suspended in a fluid that has a dye in it. I suspect that Generations
Enhanced inks come under the former category, apart from the black, which
also has a 'dye' component which I suspect is fluid, and so comes under the
latter category. I believe Piezo BW inks may also have the 'fluid' dye
component.

Printing with Piezo BW, the prints turn very warm (on SVEnhanced). This
suggests to me that the dye element moves through the paper coating and into
the paper, and the carbon pigment does not. Thus leaving the 'brown' carbon
pigment visible. I suspect something similar would happen for any ink where
the dye is fluid.

That's what I currently believe anyway!

Nij





> -----Original Message-----
> From: dellaellingson [mailto:dellaellingson@...]
> Sent: 13 February 2002 01:30
> To: DigitalBlackandWhiteThePrint@yahoogroups.com
> Subject: Re: [Digital BW] Printing to Somerset Enhance Velvet
>
>
> Nij,
>
> What about inks which have dye and pigment. It is my understanding to
> which pigmented inks are composed this way. Would the dye from a
> pigmented ink fade leaving behind the pigment? What would this do? Do
> you know how much dye there is in relation to pigment in a pigmented
> ink? Does the color shift when this happens?
>
> -Della