Konishiroku Photo Industry Co., Ltd.

Mitsubishi Chemical Industries Limited

Tadanori Oya

Kazumasa Watanabe

Kenji Yoshida

Noboru Mizukura

Ryuichiro Kobayashi

Yuzuru Sato

Naoshi Kunieda

In a dye image forming process in color photography comprising imagewise exposing a photographic element comprising a support and a light sensitive silver halide emulsion layer, and processing the exposed photographic element with an alkaline processing solution in the presence of a dye developer whereby a dye image corresponding to the imagewise exposure is formed by oxidation of said developer as a function of development of silver halide, the improvement which comprises the dye developer being a mono azo dye developer represented by the following formula:

Dye image forming process

A process for forming a dye image on a receiving element by diffusion transfer from a photosensitive element is disclosed wherein the exposed photosensitive element is processed with an alkaline solution in the presence of a particular dye developer having at least one azo radical.

Dye image forming process using shifted azo dye developer

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Kawasaki, Japan

Tadanori Oya