THERMALLY DEVELOPABLE IMAGING SYSTEM COMPRISING A BLOCKED COLOR-FORMING AGENT IN ASSOCIATION WITH A HYDROXY-SUBSTITUTED AROMATIC COMPOUND FOR PROMOTING IMAGE FORMATION

摘要

This invention comprises an imaging element comprising an imaging layer having associated therewith a phenolic activating agent in combination with a blocked color-forming agent of Structure I:wherein PUG is a photographically useful color-forming agent, LINK 1 and LINK 2 are linking groups; TIME is a timing group; HET is a heterocyclic group, and the other groups are as defined in the specification.