Azido photohardenable colloid containing an immobile dye and process of using

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 COLORING SUBSTANCE IN THE FORM OF AN IMMOBILE COLORING MATTER OR DYE, OR PRECURSOR CAPABLE OF BEING TRANSFORMED INTO AN IMMOBILE COLORING MATTER OR DYE BY SUITABLE TREATMENT, SUCH COLORING SUBSTANCE BEING IN HOMOGENEOUS MOLECULARLY DISPERSED FORM IN THE COLLOID, SAID LIGHT SENSITIVE MATERIAL BEING SUBSTANTIALLY TRANSPARENT AND SUBSTANTIALLY FREE OF OPACITY AND LIGHT SCATTERING CHARACTERISTICS AND PROCEDURE FOR UTILIZING SUCH MATERIAL, WHICH INCLUDES THE STEPS OF EXPOSING SAID COLLOID LAYER TO LIGHT UNDER A PATTERN OR NEGATIVE, CAUSING SAID AZIDE TO HARDEN THE COLLOID IN PROPORTION TO THE DEGREES OF EXPOSURE, AND REMOVING THE UNHARDENED COLLOID BY DISSOLUTION WITH WATER, PRODUCING A DYED RELIEF IMAGE WHICH CAN BE EITHER A HALF-TONE OR A CONTINUOUS-TONE IMAGE.

Inventors

• 👤 Bela Gaspar

Bibliographic Details