Digital BW, The Print

"so it may fit better into their manufacturing process, using the same
coating machines as their photographic paper."


I suspect that that is ONE of the reasons, but hey, as long as it works and
doesn't turn yellow. 

Eric


Eric Neilsen Photography
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> -----Original Message-----
> From: DigitalBlackandWhiteThePrint@yahoogroups.com
> [mailto:DigitalBlackandWhiteThePrint@yahoogroups.com] On Behalf Of Peter
> Marshall
> Sent: Thursday, March 01, 2007 5:45 PM
> To: DigitalBlackandWhiteThePrint@yahoogroups.com
> Subject: Re: [Digital BW] Micro Ceramic Lustre Vs (presumably) Harman
> 
> Barium sulphate used to be known as barytes or barite (among other
> names) but in photography the paper made using a layer of barium
> sulphate (applied as a suspension in gelatine) has been known as baryta
> paper for over a hundred years. It isn't a clay at all, clays -
> including pipeclay - are hydrated aluminium silicates. I think all fibre
> base photo papers were baryta papers, at least within living memory. Not
> urban folklore, but what all the text books said. Clay fillers are used
> in some non-photographic papers.
> 
> Titanium dioxide is generally preferred as a white pigment for inkjet
> papers - it is the most commonly used white pigment for other purposes
> also. I don't know of any reason to suppose that baryta would give
> better results, though again I don't see any reason why it shouldn't be
> ok. Harman are of course used to coating paper with baryta, so it may
> fit better into their manufacturing process, using the same coating
> machines as their photographic paper.
> 
> Peter
> 
> Peter Marshall
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