alternative developer for Polaroid instant polachrome film

rbrigham · May 11, 2015

hi

I have been having fun with some Polaroid polachrome instant 35mm film
but am now left with 3 rolls that the chemicals in the cube had dried out

can anybody offer an alternative process to process this film

regards

robin

AgX · May 11, 2015

Do not overlook that processing of these films is not only about developing, but also layer removal.

rbrigham · May 11, 2015

thanks AgX

I believe the developer soaks thru the silver film that normally would be stripped off by the processing roll
I have had great success removing this film after it has not been removed in the process
simply sticking a bit of duct tape onto the leader then just gently pulling works really well

any idea about a developer ?

robin

AgX · May 11, 2015

Give it a try with any film developer at hand with some snippets.

Good idea with the adhesive tape!

rbrigham · May 11, 2015

does anybody know how this process works ?

the film base is prismatic and it has a black film on the rear side so my guess is that light goes thru the base and forms a negative on the black emulsion which is then transferred back onto the film base during development and some how the prismatic layer is dissolved since it dose not show on a properly exposed slide

any knowledge gratefully received

robin

Gerald C Koch · May 11, 2015

rbrigham said:
does anybody know how this process works ?

the film base is prismatic and it has a black film on the rear side so my guess is that light goes thru the base and forms a negative on the black emulsion which is then transferred back onto the film base during development and some how the prismatic layer is dissolved since it dose not show on a properly exposed slide

any knowledge gratefully received

robin

Yes, it is a variation of the Dufay color process. Polaroid is mentioned at the end of the following article.

http://en.wikipedia.org/wiki/Dufaycolor

rbrigham · May 11, 2015

thanks Gerald

having looked into Dufay colour the process seems rather complicated relative to the monobath process Polaroid used

I've just done some tests in diafine so will try bleach and redeveloped later and see if I can bring out an image

Gerald C Koch · May 11, 2015

I wouldn't describe the process as overly complicated. Both Dufaycolor and Autochrome work on the same principle. Think of thousands of tiny color filters (red, blue, and green) in each frame. The overlying BW emulsion determines which filters are allowed to transmit light.

If you are able to mix chemicals you might look at Polaroid's Polachrome patents for the processing solutions.

alternative developer for Polaroid instant polachrome film

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