Material comprising a diazomum com-

Claim 1

ONE-COMPONENT DIAZOTYPE MATERIAL COMPRISING A SUPPORT CARRYING A LIGHT-SENSITIVE LAYER CONTAINING A LIGHTSENSITIVE DIAZO COMPOUND IN THE ABSENCE OF AN AZO COUPLING COMPONENT, SAID LIGHT-SENSITIVE LAYER HAVING AN ACID REACTION AND SAID DIAZO COMPOUND BEING A P-AMINO BENZENE DIAZONIUM SALT WHICH HAS A GREATER COUPLING ACTIVITY THAN P-DIAZO ETHYL BENZYLANILINE, WHICH IS DERIVED FROM A TERTIARY AMINE WITH ONLY ONE ARYL RADICAL ATTACHED DIRECTLY TO THE TERTIARY NITROGEN ATOM, AND WHICH CARRIES IN THE 4-POSITION THE DIAZO GROUP, IN THE 2-POSITION A MEMBER SELECTED FROM THE CLASS CONSISTING OF ALKOXY, ARYLOXY AND ARALKOXY GROUPS, AND IN THE 5-POSITION A MEMBER SELECTED FROM THE CLASS CONSISTING OF ALKXY, ARYLOXY AND ARALKOXY GROUPS, AND IN THE 5-POSITION A MEMBER SELECTED FROM THE CLASS CONSISTING OF A HYDROGEN ATOM, A HALOGEN ATOM, A METHYL GROUP AND AN ALKOXY GROUP, THE SAID LIGHTSENSITIVE LAYER CONTAINING A QUANTITY OIF ORTHOPHOSPHATE SELECTED FROM THE CLASS CONSISTING OF ALKALI METAL AND AMMONIUM ORTHOPHOSPHATES IN THE AMOUNT OF THE STOICHIOMETRIC EQUIVALENT OF AT LEAST 0.15 G. AND AT MOST 0.9 G. OF P2O5 PER SQUARE METER OF SAID MATERIAL.