On Mar 1, 2014, at 10:46 am, steve harley <[email protected]> wrote:
> on 2014-02-28 14:03 David Mann wrote >> I might be getting somewhere... >> >> http://en.wikipedia.org/wiki/Paget_process > > yes, that is close; i found some samples of the Paget pattern, and it appears > somewhat different from your slide, e.g.: > > <http://www.awm.gov.au/exhibitions/captured/colour/paget.asp> > > a bit of digging led me to Dufaycolor, whose pattern matches exactly, and > which was in use later in the century (though 1951 still seems late); it was > used for motion pictures too; from the name you'll find several references, > but this was particularly instructive: > > <http://zauberklang.ch/filmcolors/timeline-entry/1257/> That looks like it. I had made a mental note to search for images of the Paget pattern later but you've done it for me. You're right that the Dufaycolor pattern matches. The description of the manufacturing process seems to fit with the order of layers I observed. There are lots of PDFs linked towards the bottom of the page so I might have a fair bit of reading to do. Much appreciated :) I owe you a virtual beer. Cheers, Dave -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
