abstract |
THE INVENTION RELATES TO A PROCESS FORTHE PRODUCTION OF PHOTOGRAPHIC IMAGES, IN PARTICULAR A COPYING PROCESS, WHEREIN A SUPPORTED LAYER WHICH CONTAINS IMAGEWISELY DISTRIBUTED DEVELOPMENT NUCLEI FOR DISSOLVED SILVER SALTS, IN EITHER VISIBLE OR INVISIBLE FORM, IS DEVELOPED IN THE PRESENCE OF AN AQUEOUS SOLUTION OF SILVER SALTS SOLUBLE IN WATER AT PH VALUES BETWEEN 1 AND 7. |