Chromogenic black-and-white motion picture film

摘要

The invention relates to a photographic element comprising a Formula I class yellow coupler comprising <IMAGE> I wherein R1 represents a substituent; X is hydrogen or a coupling-off group; Y represents an aryl group or a heterocyclic group; a Formula II class cyan coupler comprising <IMAGE> II wherein R2 represents a substituent; R3 represents a substituent; X represents a hydrogen or a coupling-off group; m is from 1-3; and a Formula III class magenta coupler comprising <IMAGE> III wherein R4 is a substituent; R5 is a substituent; X is hydrogen or a coupling-off group; and which provides a relative fixed upper scale contrast between 1.1 and 1.8. An alternative form of the invention relates to a photographic element comprising a Formula I class yellow coupler comprising X is hydrogen or a coupling-off group; Y represents an aryl group or a heterocyclic group; a Formula IV class cyan coupler comprising <IMAGE> IV wherein R6 represents a ballast substituent; R7 represents a substituent; X represents a hydrogen or a coupling-off group; a Formula III class magenta coupler comprising <IMAGE> III wherein R4 is a substituent; R5 is a substituent; X is hydrogen or a coupling-off group; and which provides a relative fixed upper scale contrast between 1.9 and 2.1.