Digital BW, The Print

Timothy

Thanks.

Steve

PS That would be "OBAs" without the '    ;-)


> From: Timothy Atherton <tim@...>
> Reply-To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Date: Fri, 15 Apr 2005 10:08:51 -0600
> To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Subject: RE: [Digital BW] Innova, Hahnemuhle and optical brighteners
> 
> 
> 
>> Message: 16
>>    Date: Fri, 15 Apr 2005 14:51:41 +0100
>>    From: Steve Kale <stevekale@btinternet.com>
>> 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
> 
> 
> 
> 
> 
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