Some Photothermographic Systems

Paper presented at a symposium on “Unconventional Photographic Systems”, organized by the Science Committee of The Royal Photographic Society on 12-16 September, 1977, In Oxford.

Abstract

A number of photothermographic transfer systems have been investigated in which a heat-volatile compontne may be converted into a non-volatile compound by means of a light-induced reaction.

The heat-volatile component is coated with an organic light-sensitive compound in a binder on a support. Image-wise exposure of the layer gives a negative image and the residual volatile component is heat transferred onto a receiving sheet containing a colour-forming compound to give a positive image of the original.

Notes

Paper presented at a symposium on “Unconventional Photographic Systems”, organized by the Science Committee of The Royal Photographic Society on 12-16 September, 1977, In Oxford.