A blended ferrocyanide print process

[Raghu Kuvempunagar]

Thanks for the clarifications.

I'll try to replicate at my end when I get a chance hopefully soon.

 

[PGum]

I haven’t made cuprotypes in a while but in my last prints, I pre-coated the paper with a neutral 10% sodium citrate solution, then let dry. This reduced highlight staining significantly. However, I wasn’t using a development bath other then water. The formula I used was more along the lines of Cor Breukel’s approach.

 

[Raghu Kuvempunagar]

I haven’t made cuprotypes in a while but in my last prints, I pre-coated the paper with a neutral 10% sodium citrate solution, then let dry. This reduced highlight staining significantly. However, I wasn’t using a development bath other then water. The formula I used was more along the lines of Cor Breukel’s approach.

That's a great idea! The developer already has a lot of citrate and hence I didn't consider the possibility of adding it to the sensitiser or coating the paper with it prior to sensitisation as you have suggested. It could also interfere with the cyanotype exposure possibly. Nevertheless I should give it a try.

Thanks.