All the questions about Pyro and Chromogenic films like XP2 have set me thinking (dangerous!). }:^)(posted 8950 days ago)There seems to be no reason why a colour coupler can't be introduced at the developing stage for any black and white film, to give a stain like Pyro, but without the variability.
Are there any Chemists out there who could name a few substances that colour-couple with PPD derivative developers, to give a red, yellow or neutral stain? How easy are they to come by? Cost, toxicity, etc?
Thanks.