Chromogenic black-and-white motion picture film

Abstract

The invention relates to a photographic element comprising a Formula I class yellow coupler comprising ##STR1## wherein R.sub.1 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 ##STR2## wherein R.sub.2 represents a substituent; R.sub.3 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 ##STR3## wherein R.sub.4 is a substituent; R.sub.5 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 ##STR4## wherein R.sub.1 represents a substituent; X is hydrogen or a coupling-off group; Y represents an aryl group or a heterocyclic group; a Formula IV class cyan coupler comprising ##STR5## wherein R.sub.6 represents a ballast substituent; R.sub.7 represents a substituent; X represents a hydrogen or a coupling-off group; a Formula III class magenta coupler comprising ##STR6## wherein R.sub.4 is a substituent; R.sub.5 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.

Dependencies are inferred from the claim text.