Konishiroku Photo Industry Co., Ltd.

Ryosuke Satoh

Mitsuto Fujiwhara

Takaya Endo

Shoji Kikuchi

Toyoaki Masukawa

Satoshi Nakagawa

Katsunori Kato

Wataru Ishikawa

Kiyoshi Yamashita

Tugumoto Usui

Shinji Yoshimoto

Takahiro Uozumi

Process for forming yellow dye images in silver halide photographic material using 2-equivalent .alpha.-pivaloyl acetanilide couplers having at the 5-position a ballasting sulfonyl amido group.

Process for forming dye images

A photographic material having a light-sensitive silver halide emulsion layer coated on a support and containing a compound, useful as a development inhibitor of the formula: ##STR1## wherein X, Y and Z are as herein defined, is described.

Light-sensitive silver halide photographic materials

A light-sensitive silver halide photographic material comprising a new development inhibitor releasing type compound and a process for developing thereof.

DIR coupler that forms colorless reaction product

A light-sensitive silver halide photographic material containing a new development inhibitor releasing compound. The said compound has no hydrogen atom at the carbon atom which is adjacent to the carbonyl group and capable of coupling to an oxidation product of a color developing agent on the development.

Light-sensitive silver halide photographic material

A light-sensitive silver halide color photographic material comprising a new development inhibitor releasing type compound and a hardening agent and a process for developing thereof.

Light-sensitive silver halide color photographic material and a process

A silver photosensitive material comprising a development inhibitor-releasing compound of the formula ##EQU1## wherein Z is an atomic group necessary to form a 5 to 7 membered saturated or unsaturated carbon ring with the carbon atoms to which it is attached, said ring being unsubstituted or substituted by at least one of halogen and a member of the class consisting of alkyl, aryl, alkoxy, acyloxy, aryloxy, SY and a group forming a condensed carbon ring with said saturated or unsaturated carbon ring; Y is arylmercapto, heterocyclic, thioglycollic acid, cystein or glutathione. A method for the development of silver halide photosensitive material by the use of the foregoing compound is also disclosed.

Development inhibitor-releasing type compound for photographic use

This invention relates to a development inhibitor-releasing compound of the following general formula: ##SPC1## Wherein Z is an atomic grouping necessary to form a carbocyclic ring; Y is a group which, when the sulfur atom of the thioether linkage is released, forms together with said sulfur atom a compound having a development-inhibiting action; and X is a hydroxyl group or a substituted or non-substituted amino group.

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Hino, Japan

Ryosuke Satoh