Photographic material and process
Photographic compound (A) capable of releasing a development inhibitor group by means of a displacement reaction enables increased image acutance when the compound contains in a coupling position a coupling-off group represented by the formula: wherein X, R1, R2, R3, R4, and Q are as defined in the...
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Main Authors | , |
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Format | Patent |
Language | English French German |
Published |
04.09.1991
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Subjects | |
Online Access | Get full text |
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Summary: | Photographic compound (A) capable of releasing a development inhibitor group by means of a displacement reaction enables increased image acutance when the compound contains in a coupling position a coupling-off group represented by the formula: wherein X, R1, R2, R3, R4, and Q are as defined in the application. Such a compound (A) is useful in a photographic silver halide material and process. |
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Bibliography: | Application Number: EP19910102368 |