Color photographic element

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6511796
APP PUB NO 20020015923A1
SERIAL NO

09861920

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The invention provides a multilayer silver halide color photographic element comprising a support having coated thereon at least two red-sensitive silver halide emulsion layers having different sensitivity to red light, characterized in that the most sensitive of said red-sensitive silver halide emulsion layers comprises a core-shell silver bromoiodide tabular emulsion having a pure bromide core, a total silver iodide content lower than 10% and an aspect ratio higher than 4.0 and a Speed Enhancing (SE) cyan coupler represented by one of the following general formulas: ##STR1## wherein A represents (TIME).sub.n --S--R.sub.1 --R.sub.2, TIME being a timing group releasing S--R.sub.1 --R.sub.2 with delay under developing conditions; n represents 0 or 1; R.sub.1 is a divalent linking group and R.sub.2 represents a water-solubilizing group or --NR.sub.3 --R.sub.4, wherein R.sub.3 and R.sub.4, which may be the same or different, each represents a hydrogen atom or an aliphatic group having from 1 to 3 carbon atoms; R.sub.5 and R.sub.9 represent a non-diffusible ballasting group, R.sub.6 represents a group capable of substituting a hydrogen atom of the naphthol ring, m represents 0 to 3, R.sub.7 represents hydrogen or a halogen atom, R.sub.8 represents an alkyl group, and R10 represents an aryl group. The invention provides enhanced sensitometric properties, such as reduced formation of fog, increased speed and increased sensitivity.

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Patent Owner(s)

Patent OwnerAddress
PARCO TECNOLOGICO VAL BORMIDA S R LVIALE DELLA LIBERTA 57 FRAZIONE FERRANIA CARIO MONTENOTTE

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fava, Simona Genoa, IT 3 1
Poggi, Antonio Quiliano-Valleggia, IT 4 6
Rocca, Giuseppe Carcare, IT 5 5

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