Digital BW, The Print

Why can't we just use a "Silver" pigmented ink?


----- Original Message -----
From: "Todd Flashner" <tflash@...>
To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
Sent: Wednesday, December 19, 2001 11:05 AM
Subject: Re: [Digital BW] print sales - longevity claims?


> I do as Julian does. Unfortunately I don't see independent tests for the
> carbon quads, but I take these factors into account and do the best I can
> with making something meaningful from them:
>
> Enhanced Generations on Hahnemuhle paper is at 100 Wilhelm years and
> counting, and they use a less stable black than the Piezo or MIS VM black.
>
> 100 W. years is longer than most color photographs are rated by W.
>
> I base my claim on using carbon pigments on H. papers.
>
> Color pigments are likely to be less stable than black carbon pigments,
thus
> carbon quads are likely to last longer than color pigs, which already test
> longer than most color photographic materials (Perhaps dye transfer lasts
> longer).
>
> I know (know? well no I don't know) these prints won't last as long as
> silver BW prints because I'm told conditions which fade these guys
> appreciably don't budge silver prints.
>
> So all told I feel Julian is about right in a ball park sense. At least it
> shows it's in there among other collected mediums...
>
> Todd
>
> >> I'm uneasy with Julian's answer, partly because I don't think we
> >> should say anything on our own authority because I don't think we
> >> know. I think we should point people to credible independent testers
> >> such as RIT and Wilhelm. If we do, won't they find color prints with
> >> longer lifespans than BW? My guess is that's only because some ink
> >> manufacturers have been investing in the testing longer than others
> >> or have been testing color but not quadtones. I think it would take a
> >> fairly long and elaborate answer to include such interpretive notes,
> >> and an even longer and more elaborate one to say anything very
> >> encouraging about ink-and-paper combinations not tested by any third
> >> party. That would be good to do, I think, and might result in
> >> something useful as a handout or enclosure, but I'm afraid it's a
> >> major project.
> >>
> >> Sam
> >>
> >>
> >>> Whenever I'm asked I always say better than colour and not as good as
> >>> selenium toned silver.
> >>>
> >>> Julian
> >>> ----- Original Message -----
> >>> From: "frankg_photo" <frank@...>
> >>> To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> >>> Sent: Wednesday, December 19, 2001 2:24 PM
> >>> Subject: [Digital BW] print sales - longevity claims?
> >>>
> >>>
> >>>> when you sell your "carbon pigment" prints (MIS or Piez), what claims
> >>>> can you safely make regarding the archival issue.
> >>>>
> >>>> How long can you safely claim the print's integrity under 'normal"
> >>>> hanging conditions in a home environment (which I'd say is a fair mix
> >>>> of ambient(uv) & artificial (mostly tungsten) light.
> >>>>
> >>>> Dark storage, pollutant free, humidity controlled environments are,
> >>>> of course, a little different.
> >>>>
> >>>> I realise this would be specific depending on which paper has been
> >>>> used; but I'm just looking for some guidance- or a ballpark range.
> >>>>
> >>>> thanks
> >>>> frank
> >>
> >>
> >>
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> Please visit the Group Homepage to check the Files, Bookmarks, Polls and
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> http://groups.yahoo.com/group/DigitalBlackandWhiteThePrint
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> Please follow these basic guidelines:
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