Ilford plate info - Mr Galley?

[Schlapp]

I have acquired some unexposed Ilford Special Lantern plates 19x19cm and I was wondering if anyone has any info on them please? Asa and development ideas and the like. Batch no 7567A - Mr Galley

 

[Ian Grant]

They might have been made before Simon was born

Try looking in older Ilford Manual's of Photography, I'd look for you but all mine are a continent away. They are listed.

Ian

 

[Ian Grant]

Looking at a British Journal Photographic Almanab the developers for Lantern plates were essentially much the same as for bromide & chloro-bromide papers and of a wide variety giving warm tones, cold tones etc. The Ilford advert in the same almanac lists no Lantern plates in 1954, and none from other manufacturers either

Lantern plates were for producing positives for projection so no film speed would have been listed.

Ian

 

[Schlapp]

Ah. Many thanks. That's useful- I can make some plates for cyanotype/POP prints now. How does one know how much to expose when using it this way?

 

[PHOTOTONE]

Ah. Many thanks. That's useful- I can make some plates for cyanotype/POP prints now. How does one know how much to expose when using it this way?

IF..they are still usable, you will have to sacrifice one, and make test-strips on it. It should be only "blue" sensitive, so you can develop under normal darkroom safelight for paper. Develop by inspection.

 

[Bob F.]

That seems large for Lantern Plates. My 1890's Ilford Manual of Photography says they are normally 3 1/4 inches square and Special Lantern Plates were "Intoduced to the public in the winter of 1890 (1 shilling per dozen - "Other sizes to order in a few days." )...

As said, it seems they are treated much as contact paper. The manual suggests ID-16 (ID-17 for warm tones). Also says that: "any good metol-hydroquinone developer may be used, including such as are normally used for negatives or bromide paper". " Apparently they are very slow and a yellow safelight is considered suitable.

Have fun, Bob.

 

[Schlapp]

Cool. Will give them a try