cirwin2010
Member
This isn't a problem, more just a curiosity. Does anyone know why my sepia toned prints continue to change in colour during washing?
I use a home made sodium sulfide sepia toner for my prints. If I, for example, lightly bleach a print for 20 seconds, wash it, then tone it, I get a subtle colour change in the sulfide bath. The color change is immediate and I usually leave it in the bath for about 1-2 minutes.
Now when I wash it the print will continue to get warmer in colour over the course of 20-30 minutes while washing. This effect is more pronounced with warm tone papers and I have to account for this change by bleaching for less time.
Anyone know why this is happening? I feel confident that I am washing the bleach out for the paper before toning. Is the sulfide that remains in the paper directly toning the developed silver?
I use a home made sodium sulfide sepia toner for my prints. If I, for example, lightly bleach a print for 20 seconds, wash it, then tone it, I get a subtle colour change in the sulfide bath. The color change is immediate and I usually leave it in the bath for about 1-2 minutes.
Now when I wash it the print will continue to get warmer in colour over the course of 20-30 minutes while washing. This effect is more pronounced with warm tone papers and I have to account for this change by bleaching for less time.
Anyone know why this is happening? I feel confident that I am washing the bleach out for the paper before toning. Is the sulfide that remains in the paper directly toning the developed silver?