Digital BW, The Print

> Message: 16
>    Date: Fri, 15 Apr 2005 14:51:41 +0100
>    From: Steve Kale <stevekale@...>
> Subject: Re: Re: Innova, Hahnemuhle and optical brightners
>
> It would be nice to know, in the first instance, simply whether a
> paper has
> them or not.  I thought HPR and Permajet Alpha did not have Ops.  Is this
> correct?

No - not correct as far as HPR is concerned (It's OBA's, not Ops btw). If
you go back to the days on here when the original MIS quads were the only
option, it's been discussed many times since then. In testing by IPI et al
The slight warming of Photorag that tends to show as the OBA's lose their
effect has always been an issue. But once that has happened, the effect
stabilizes and doesn't continue over the longer life of the paper. So there
is a steeper curve in the first part of the life of the paper/ink
combination, but it tends to level off and equal that of similar non-OBA
papers if I'm remembering the figures correctly (it's a while since I saw
the charts).

I think Hahnemuhle were supposed to be bringing out a non-OBA version of
Photo Rag weren't they?


timothy atherton