I Miss my Viewfinder !

On Fri, 03 Jun 2011 13:20:20 +0200, Mxsmanic
wrote:

Eric Stevens writes:

Which is coated with gelatine.

Not after development. An image in metallic silver on glass is very stable.
You can go even further by etching the glass.

But that's not the normal process (if such a process as you have just
described even exists).

After an image is developed it is 'fixed'. The function of a fixer is
(among other things) the hardening of the gelatine.

http://www.wikiradiography.com/page/...eloping+Stages

"Fixer in Detail

Fixing Agent - Amonium thiosulphate removes undeveloped Silver (Ag)
Halide from emulsion

Hardener - Stiffens, shrinks and hardens the film emulsion therefore
protecting the film from damageas well as accelerating film drying
time

Preservative - Sodium Sulphite maintains the chemical balance and
improves the shelf life of the product

Buffer - Acetate maintains the correct PH

Sequestering Agent - Removes aluminium ions

Solvent - H2O dissolves other compounds"

Regards,

Eric Stevens