Oriental Photo Industrial Co., Ltd.

Kouji Katsube

Toshio Hirosawa

Toshiko Nakamura

Yoshiro Hayafuchi

Junichi Komiyama

Katsuyuki Arasawa

Noboru Sonda

Tsuyoshi Fujita

The present invention provides a silver halide photographic material and an image forming method for obtaining a monochrome image using a dye image even if it is treated with a color developer free of benzyl alcohol; a photographic property of the monochrome image is less deteriorated by a toxic gas such as formaldehyde and an increase in sensitization and fog with time is improved. A silver halide photographic material comprising a support, at least one silver halide emulsion layer on the support and at least one non-photosensitive hydrophilic colloidal layer, in which a silver halide grain of the silver halide emulsion layer includes not less than 95% mol of silver halide and in which the silver halide emulsion layer includes a yellow coupler, a magenta coupler, a cyan coupler and a specific formalin scavenger and the silver halide emulsion layer and/or the non-photosensitive hydrophilic colloidal layer include a specific s-triazine type compound and a method for forming an image by developing the silver halide photographic material with a color developer substantially free of benzyl alcohol.

Silver halide photographic material and method for forming image

The present invention provides a silver halide photographic material which can give a black-and-white picture by the use of dye images even when processed with a color developer substantially free from benzyl alcohol, and little suffers from the deterioration of photographic characteristics by harmful gas such as formaldehyde; and a process for forming images. Specifically, a silver halide photographic material comprising a base and at least one silver halide emulsion layer formed on the base, wherein the silver chloride content of the grainy silver halide constituting the silver halide emulsion layer is 95 mole % or above; the silver halide emulsion layer contains a yellow coupler, a magenta coupler and a cyan coupler; and the silver halide emulsion layer and/or other hydrophilic colloid layer contains a specific compound; and a process for forming images which comprises processing this silver halide photographic material with a color developer substantially free from benzyl alcohol.

Silver halide photographic material and a process for forming images

A silver halide photographic material is provided which exhibits nearly equal sensitivities and gamma values with respect to yellow, magenta and cyan to form a black-and-white image of neutral black or sepia tone, even when it is processed with a color developer free from benzyl alcohol. The silver halide photographic material is made up of a substrate and at least one silver halide emulsion layer formed on the substrate. The silver chloride content of silver halide grains constituting the silver halide emulsion layer is 95 mole % or above, the silver halide emulsion is spectrally sensitized by a specific sensitizing dye, and the silver halide emulsion layer contains a yellow coupler, a magenta coupler and a cyan coupler. The image-forming process is characterized by developing the silver halide photographic material with a color developer substantially free from benzyl alcohol.

Silver halide photographic material and image-forming process

Growing community of inventors

Kanagawa, Japan

Kouji Katsube