Fuji Photo Film Company, Limited

Tadao Sakai

Masayoshi Kawai

Tadao Shishido

Takeshi Hirose

Masakazu Yoneyama

Akio Mitsui

Shoji Ishiguro

Takushi Miyazako

Yasushi Oishi

Nobuo Yamamoto

A multilayer color photographic material suitable for optically recording sound images on a sound track area formed thereon is composed of a support having coated thereon at least one silver halide emulsion layer containing a color coupler in at least a 40 mol% excess of the stoichiometric amount of the coupler to the silver halide contained in the emulsion layer and at least one silver halide emulsion layer containing a color coupler in an amount less than 40 mol% excess of the stoichiometric amount of the coupler to the silver halide in the emulsion layer. The color photographic material is suitably processed by a color intensification development process.

Color intensification process for sound images

A color photographic light-sensitive material which comprises a support having coated thereon at least one light-sensitive silver halide emulsion layer containing a yellow dye-forming coupler, at least one light-sensitive silver halide emulsion layer containing a cyan dye-forming coupler, at least one light-sensitive silver halide emulsion layer containing a magenta dye-forming coupler and at least one light-sensitive silver halide emulsion layer containing at least one non-diffusible silver bleach inhibitor selected from the group consisting of a nitrogen-containing heterocyclic compound having a thioether bond and a heterocyclic compound containing one or more nitrogen atoms which combine with a group containing 11 or more carbon atoms to form a quaternary salt, in combination with one or more heterocyclic thione compounds having a thione group which is not capable of forming a mercaptan. The color photographic light-sensitive material provides silver images for sound recording without any specific processing steps as are conventionally used to form sound tracks.

Color photographic light-sensitive material

A process for forming an optical sound track comprising applying ultraviolet light exposure to an optical sound track area of a multi-layer color photographic light-sensitive material comprising a support, color image-forming silver halide emulsion layers consisting of at least one blue-sensitive silver halide emulsion layer containing a yellow dye-forming coupler, at least one red-sensitive silver halide emulsion layer containing a cyan dye-forming coupler, and at least one green-sensitive silver halide emulsion layer containing a magenta dye-forming coupler, and at least one ultraviolet light-sensitive silver halide emulsion layer (sound track forming layer) containing a non-diffusible silver bleach inhibitor and an infrared dye-forming coupler which forms a dye having an absorption maximum at wavelengths longer than 725 nm, wherein at least one layer interposed between the ultraviolet light-sensitive silver halide emulsion layer and the support contains a non-diffusible ultraviolet absorbant.

Process for forming an optical soundtrack

A method of increasing the viscosity of photographic coating solutions which comprises adding polymers having therein the repeating unit represented by the following formula (but having a maleic acid content of more than about 40% by mol' ##STR1## wherein R represents a hydrogen atom or a t-butyl group, and M.sub.1 and M.sub.2 each represents a cation, which may be identical or different from each other, to gelatin containing photographic coating solutions.

Method of increasing the viscosity of photographic coating solutions

A color photographic cine or TV film on which a sound recording band or track can be formed without the necessity for a specific additional treatment comprising a film base having thereon at least a silver halide emulsion layer containing a coupler capable of forming a dye by the coupling reaction with the oxidation product of an aromatic primary amino developing agent, and at least one of the emulsion layers of the color photographic material containing a bleach inhibitor in only the portion defined as the sound recording track.

Color photograhic material having a bleach inhibitor therein defining a

A process for forming an optical sound track which comprises applying a nitrogen containing heterocyclic compound in which at least one of the nitrogen atoms is connected to a group having 6 or more carbon atoms to form a quaternary salt to a sound track area of a multilayer color photographic material, after color development but prior to a bleaching step, whereby an optical sound track can be easily prepared on a conventional multilayer color photographic material.

Process for forming optical sound track

A color photographic light-sensitive material comprising a support having coated thereon at least one light-sensitive silver halide emulsion layer containing a yellow dye-forming coupler, at least one light-sensitive silver halide emulsion layer containing a magenta dye-forming coupler, at least one light-sensitive silver halide emulsion layer containing a cyan dye-forming coupler, and at least one light-sensitive silver halide emulsion layer containing a compound having a thioether bond directly connected to a nitrogen-containing heterocyclic ring.

Growing community of inventors

Minami-ashigara, Japan

Tadao Sakai