Dating velox paper

Light energy alone, usually from the sun, reacted with the light sensitive chemicals on the paper’s surface to produce an image.They only needed to be fixed to preserve the exposed image.This could go on for generations, and it is not uncommon to find the same photograph attributed to three different artists.

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- 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.

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.

Sometimes a photographer might expose a logo onto the image or hand stamp a name to the back of the card. Numbering was an essential way of keeping tract of large inventory.

The presence of a photographers name is not a definite indication of when a card was made or even who made it.

Many other brands of photo paper were also manufactured in Europe but rarely left the continent.

The very first photographs made were on printing out paper.

But even here the effect is more of a softening of detail than a observable texture.

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