Re: paper and optical brightner


Craig Koshyk (chiendog@pangea.ca)
Tue, 30 Mar 1999 18:10:24 -0600


>
> the practice of using titanium dioxide began in the mid-thirties and i have
> never heard of it causing any archival problems--although it could be in
> papers that have archival problems for other reasons.

> I may be wrong here but it seems to me that a recent article by Ctein in
> Photo Techniques magazine pointed the finger at Titanium dioxide as the
> culprit in the deterioration of photos made on resin coated paper. I believe
> he hypothesized a reaction between it and image silver. No problem for the
> plat/pallad or gum printers but maybe the kallitypists out there should read
> the piece.

C.Koshyk



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