decolorante
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I was at the library, reading really old books on photography, and I found one about modern (now ancient) processes for color reproduction. Inside, it was written that a particular substance takes the color of the light shining on it, requiring no development.
Though the author called it in an unusual way, I have found that to be a component of photographic paper emulsions (I think the silver chloride.. but I can't be sure as I don't know enough). Anyway I have tried and verified that exposing dry photographic paper to direct color-filtered sunlight for long times makes it take almost the color of the filter (for some simple colors, like red and blue). [By the way, has anyone an idea as to why this happens on B&W paper?]
I think that I could expose paper under the enlarger, develop it, stop it, wash it briefly and dry it, all in the dark- then, once dry, expose it to filtered sunlight for something like half an hour to give it a slight base colour (to replace the white)- then, fix it and wash it properly.
What I am hoping to answer is: how does fixing change the obtained color (I already know that it does, to some extent) and what archival properties does the result have. I will post after experimentation.
If anyone has tried this before, he or she is welcome to share the results.
Have a nice day!
Though the author called it in an unusual way, I have found that to be a component of photographic paper emulsions (I think the silver chloride.. but I can't be sure as I don't know enough). Anyway I have tried and verified that exposing dry photographic paper to direct color-filtered sunlight for long times makes it take almost the color of the filter (for some simple colors, like red and blue). [By the way, has anyone an idea as to why this happens on B&W paper?]
I think that I could expose paper under the enlarger, develop it, stop it, wash it briefly and dry it, all in the dark- then, once dry, expose it to filtered sunlight for something like half an hour to give it a slight base colour (to replace the white)- then, fix it and wash it properly.
What I am hoping to answer is: how does fixing change the obtained color (I already know that it does, to some extent) and what archival properties does the result have. I will post after experimentation.
If anyone has tried this before, he or she is welcome to share the results.
Have a nice day!