Dating foreign postcards speed dating utah county
The simplicity of the process made it very attractive to amateur photographers.Printing out papers fall into two categories, those coated with metallic salts, and those with coated with an emulsion.The printing of the photographer’s or manufacturer’s name on the back of real photos was an expensive proposition.This practice was only cost effective on cards printed in large numbers; individuals and small photo studios could rarely afford to do so. While many amateur photographers numbered their cards this was most often done by larger studios.- This process was invented in 1842, but its first known use for a postcard was in 1888.No commercial paper was needed, though eventually manufactured, as card stock could be photosensitized at home and printed out. Variations on this process were developed over the years that followed.Most old photo papers used silver in their emulsions.
When no postmark is available, the type of materials used can often aid in narrowing down the years it may have been produced in.If the name appears on the photo itself, it is because the negative was scratched into or written upon but it could have been printed at any time.Some companies were still printing real photo postcards in the 1970’s from negatives taken in the 1890’s.At least 450 different real photo postcard backs can be found but as of this time there is a lack of accurate information regarding all their dates of use, or they were used in very limited quantities.Kodak controlled 80% of the paper market with their brands Artura, Azo, Aristo, EKC. Cyko by Ansco, Argo by Defender, and Kruxo by Kilborn comprised most of the remaining market.