Manufacture of photographic gelatin relief images

Claim 1

IN A METHOD OF FORMING A PHOTOGRAPHIC GELATIN RELIEF IMAGE, THE STEPS OF: TREATING AN EXPOSED GELATINO SILVER HALIDE EMULSION WITH AN AQUEOUS COMPOSITION COMPRISING A DEVELOPING AGENT THAT REDUCES THE SILVER HALIDE IN THE REGION OF THE EMULSION THAT HAVE BEEN EXPOSED TO LIGHT AND IS OXIDIZED TO A TANNING AGENT THAT HARDENS THE GELATIN EMUSLION IN THESE EXPOSED REGIONS; AN ORGANIC ONIUM SALT THAT IS, IN THE ORGANIC PORTION THEREOF, FREE FROM SUBSTITUENTS SELECTED FROM THE GROUP CONSISTING OF ACID SUBSTITUENTS AND SAID ACID SUBSTITUENTS IN SALT FORM, SAID ONIUM SALT ACCELERATING THE ACTIONS OF THE DEVELOPING AND TANNING AGENTS, AND A SOFTENING AGENT FOR SOFTENING THE UNEXPOSED REGIONS OF THE EMULSION, THE PROPORTION OF THE AMOUNTS OF ONIUM SALT AND SOFTENING AGENT BEING SUCH THAT THE ONIUM SALT ACCELERATES THE ACTINS OF THE DEVELOPING AND TANNING AGENTS ON THE EXPOSED REGIONS OF THE EMULSION SO THAT THESE REGIONS ARE HARDENED PRIOR TO THE ACTION OF THE SOFTENING AGENT, AND THE SOFTENING AGENT THEREAFTER SELECTIVELY ACTS UPON AND SOFTENS THE UNEXPOSED REGIONS OF THE EMULSION; AND, REMOVING THEREAFTER THE SOFTENED UNEXPOSED REGIONS OF THE EMULSION TO PRODUCE A GELATIN RELIEF IMAGE.