Colour Prints with B&W paper?

[Athiril]

I refer to the excellent post by PE:
(there was a url link here which no longer exists)

In the advent of papers available for RA-4 processing.. I thought with a lot of effort you could print colour film to b&w paper and get a colour print.

By taking three separate filtered exposures one at a time with an enlarger onto paper, then using the corresponding C/M/Y developer on it, with a rehal bleach after that step before the next exposure.

IIRC, panchromatic papers are no longer available (what about the new direct positive stuff though?), for red exposure an extended developer or filtered speedlite backlight might be appropriate?

I figure as long as one can still get their hands on raw chemical components, that one could use home-coated paper, or different grades of commercial b&w paper if RA-4 goes tits up.

Though effort and time is increased exponentially, I imagine it could be good for quite large prints.

Just a thought that popped into my mind while reading another one of PE's great posts

 

[richard ide]

IIRC Rockland Colloid (makers of Liquid Light etc.) made a kit with colour couplers. At one time I was trying various odd processes for potential commercial applications but never went past the testing stages. They were all a PITA timewise.

 

[Ian Grant]

Back in the 70's and 80's I used chromogenic developers/couplers for some commercial work, there was also a Tetenal kit available in Europe.

Bob Carlos Clarke used colour couplers for some of his images in the Dark Summer book & exhibition.

Ian

 

[thisismyname09]

Strangely enough, I was just thinking about this sort of thing (though I got the idea from the end of the color section in the Photo-Lab-Index from 1961). Since B&W paper isn't red-sensitive, I thought it would probably be easier to use positive film, and the separate the colors onto three negative films, and use each to make the print.

 

[Mainecoonmaniac]

Sounds like this process is a very close cousin of dye transfer printing.

 

[kevs]

<snip>

IIRC, panchromatic papers are no longer available (what about the new direct positive stuff though?), for red exposure an extended developer or filtered speedlite backlight might be appropriate?

</snip>

There is one - Ilford Galerie FB Digital, if you care to buy a whole roll of it!

 

[hrst]

Sounds like this process is a very close cousin of dye transfer printing.

Not at all.

Closer to Kodachrome, but not quite.

 

[Domin]

By taking three separate filtered exposures one at a time with an enlarger onto paper, then using the corresponding C/M/Y developer on it, with a rehal bleach after that step before the next exposure.

Interesting idea.

The rehal bleach step got me thinking - what are the properties of rehalogenated emulsion? Does it lose speed, contrast? I would be suprised if that did not change its characteristics considerably.

 

[Perry Way]

Does anyone have any examples of this kind of technique we can look at?

 

[removed account4]

someone folks on apug has begun making primitive color images ...
autochrome and lippmann plates,
it might be a tad bit involved but a do-able process...
it seems that in camera tri-color with b/w film and rgb filters
and then contact printed on the autochrome or lippmann plates would work