Flashing paper for color printing?

[Serge J-F. Levy]

Is it possible to flash a c-print ever so slightly to create some differentiation in tonality between a white in the frame of the image and the white of the base of the paper? Is it possible to get a grey tone?

Please advise or let me know if you don't understand the question.

Thanks,
Serge

[ronald moravec]

If you flash the entire print, it is anybodys guess what will happen to the picture besides lowering contrast and changing color balance in the highlights.

I would build a fixture to expose just two edges at at time, repeat the operation twice. This was the traditional way to get black borders on monochrome prints.