Spreading of dichromated gelatin
To spread the bichromatée gelatin to a most uniform possible way over plates, we make sure at first that these are perfectly of level on […]
Exposure to light of the photosensitive gelatin
GENERAL INFORMATION ON EXPOSURE TO LIGHT : While the gelatin/dichromate/water has not been dried, ultraviolet light has no effect on the gelatin. The action takes place […]
Rinsing plates
At the end of sunstroke, we have to see the complete image, in slightly brown color, with all its details, even in its halftones. After […]
Collotype ink
Inks used for collotype are different from the inks commonly used in printing, which are not suitable. They have very specific characteristics. Collotype ink is […]
Wetting of the plate
(preliminary operation: wetting with glycerine) PRELIMINARY OPERATION : Insert a sheet of white paper under the glass slab during printing to avoid breakage, and especially […]
Collotype amateur
Collotype press for amateurs Faller We have to indicate also the attempts made for some time to put the phototypie within the reach of all […]
Problems resolution
Various difficulties may arise during the course of operations as well as during the draw of the collotype tests. Some answers are addressed here
Collotype Books
The Internet Archive Manuel Pratique de Phototypie, Jean Voirin (1892) :
Once upon a time the collotype
As you will understand from the title of this article, we will have to talk about the past (or almost). This process, which dominated for […]