TELLURIUM IMAGING COMPOSITION INCLUDING A N-AMIDO SUBSTITUTED PYRAZO CONTAINING MASKED REDUCING AGENT

摘要

This application relates to an imaging composition employing a tellurium compound sensitive to activating radiation. Such imaging compositions have been disclosed in a number of earlier patents, such as U.S. Patents 4,142,896, 4,066,460 and 4,106,939. This application discloses improvements in masked reducing agents for such compositions. The improved masked reducing agents are compounds of the formulae R1-NZ-NZ2 ; or wherein Y is hydrogen or , said compound containing at least one group.