Photographic recording material containing a precursor of a...

Details Photographic recording material containing a precursor of a... Photographic recording material containing a precursor of a...

G - Physics

03

C

96/100

G03C 7/26 (2006.01) C07D 249/18 (2006.01) C07D 257/04 (2006.01) G03C 7/305 (2006.01)

Patent

CA 1210983

ABSTRACT "Photographic recording material containing a precursor of a photographically active compound" Precursor compounds from which photographically- active compounds are released with a time delay correspond to the following general formula Image wherein A represents the residue of a compound which undergoes oxidative coupling; X represents -O-, -S- or -NR1 -; Y represents a releasable group which may consist of or contain the residue of a photographically- active compound; and R represents a group for controlling the kinetics of release. Advantageous pictorial properties (inter- image effect, edge effect, modulation transfer function) are obtained with compound according to the present invention if the photographically-active residue is the residue of a development inhibitor.

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