New Photoglyptic Process.*
* A communication to the Photographic Society of France.
Walter B. Woodbury.
It is now thirteen years since I had the honor of introducing in France my new photoglyptic process, which, up to the present time, has remained in the hands of very few, owing to the great expense hitherto necessary to start the working of it. For some time I have been engaged in making experiments with a view to discover a system which should be at the same time simple and inexpensive; and the process which I have this evening the honor to bring before your notice is the result of my researches.
The summary of the new system is as follows:
To obtain from negatives reliefs on glass similar to transparencies by the carbon process, but modified in the quantity of materials used.
To attach, and keep in absolute contact with the relief so obtained, a sheet of tin foil.
To solidify this sheet of tinfoil by coating it with copper; then backing it up with another sheet of plate glass covered with a composition; and then to detach the whole from the first relief—the result being a mould ready to place in the press and print one thousand or more proofs.
I commence by showing you the relief made from the negative, and explaining how this is obtained.