Aromatic azide material and process for producing color images

Abstract

Abstract A LIGHT SENSITIVE MATERIAL CONTAINING A HARDENABLE HYDROPHILIC COLLOID, E.G., A GELATIN, LAYER WHICH CONTAINS A LIGHT SENSITIVE AROMATIC AZIDE AND A TRANSFERABLE DYE, AND PROCEDURE FOR UTILIZING SUCH MATERIAL, WHICH INCLUDES THE STEPS OF EXPOSING SAID COLLOID LAYER TO LIGHT UNDER A PATTERN OR NEGATIVE, TO HARDEN THE COLLOID IN PROPORTION TO THE DEGREE OF EXPOSURE, TEMPORARILY IMMOBILIZING THE TRANSFERABLE DYE, E.G., BY LOWERING THE PH OF THE COLLOID LAYER, OR BY SALT FORMATION, AND REMOVING THE UNHARDENED COLLOID BY DISSOLUTION WITH WATER, THEREBY PRODUCING A DYED MATRIX WITHOUT THE LOSS OF DYE DENSITY OF SAID TRANSFERABLE DYE DURING THE OPERATION WHICH REMOVES THE UNHARDENED COLLOID, THE IMMOBILIZED DYE BEING RENDERED TRANSFERABLE TO A RECEIVING LAYER OR BLANK, E.G., BY CONTACTING THE HARDENED RELIEF IMAGE WITH SUCH RECEIVING LAYER AT A HIGHER PH SUCH AS AN ALKALINE PH, E.G., ABOUT 8.

Inventors

• 👤 Bela Gaspar

Bibliographic Details