Konica Corporation

Shinri Tanaka

Michiko Nagato

Nobuaki Kagawa

Manabu Kaneko

Yasuhiko Kawashima

Dai Ikemizu

Shuichi Sugita

Tawara Komamura

Hirokazu Sato

Noritaka Nakayama

Taketoshi Yamada

Makoto Kajiwara

Takatugu Suzuki

Mitsuhiro Okumura

Hiroshi Shimazaki

Hideaki Haraga

Tamotsu Kojima

Kazuhiro Murai

Yasushi Irie

Naoshi Kunieda

Katsuji Ota

Hiroyuki Iizuka

Hiroshi Okusa

Ryuzou Watanabe

Tomio Horiuchi

Silver halide light-sensitive material containing a specific dye

A silver halide light sensitive photographic material is disclosed, comprising a transparent support having thereon a silver halide emulsion layer, and the photographic material further having a color filter layer comprising picture elements comprised of a colored resin and randomly arranged.

Silver halide light sensitive photographic material

A silver halide light-sensitive color photographic material is disclosed. A coupler represented by the formula is used.

Silver halide light-sensitive color photographic material

A method to recover the resources incorporated in a photographic material is disclosed. An exposed silver salt light-sensitive photographic material is subjected to color development processing; the obtained image information is optically read; digital image information is obtained by converting the read information to electrical signals, and the resulting image information is recorded on a recording medium, and resources incorporated in a photographic material is recovered from the processed photographic material.

Resources recovery method in a silver salt photographic system

A silver halide light-sensitive color photographic material comprising containing a coupler is disclosed. The coupler is represented by formula (VII): wherein PUG represents a photographically useful group; R represents a substituent; m represents an integer from 1 to 5; and n represents zero or an integer from 1 to 4, wherein the coupler has a group represented by formula (VII a) at a position other than active point of the coupler, ##STR1##

A method of manufacturing a sulfide comprises the steps of (a) dissolving a thiol in a solvent to form a solution; (b) oxidizing the thiol to a disulfide in the presence of a first oxidizing agent in the solution; (c) reacting the disulfide with a coupler in the presence of a base and a second oxidizing agent, without isolation of said disulfide from the solution, to form a reaction mixture in which the sulfide is produced; and (d) obtaining said sulfide.

Manufacturing method of sulfides

A silver halide color photographic light-sensitive material is disclosed. The light-sensitive material comprises a support, provided thereon, a blue-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer and a red-sensitive silver halide emulsion layer, and the green-sensitive emulsion layer contains a coupler represented by the following Formula I; ##STR1## wherein R.sub.1 is a hydrogen atom or a group capable of being released upon reaction with the oxidation product of a color developing agent; R.sub.2 is a chlorine atom or an alkoxyl group; R.sub.3 and R.sub.4 are each independently a hydrogen atom or a substituent, provided that when R.sub.3 is a hydrogen atom, R.sub.4 is a substituent; and R.sub.5, R.sub.6, R.sub.7, R.sub.8 and R.sub.9 are each a halogen atom.

Silver halide color photographic light-sensitive material

A process of preparing a purified crown compound is disclosed which comprises the steps of (a) dissolving a crown compound and a salt in an organic solvent to form a solution of a complex salt of a crown compound; (b) filtering the solution to obtain a filtrate; (c) adding water to the filtrate to produce a precipitate; and (d) filtering out the produced precipitate.

Processing for purifying crown compounds

A silver halide light-sensitive color photographic material is disclosed. A green-sensitive silver halide emulsion layer of the material comprises a coupler the formula M-I or formula M-II defined in the specification, and the color photographic material provides enhanced sensitivity and excellent color reproduction property when it is printed, and improved resistance against formalin gas and storage preservation property before exposure. ##STR1##

Silver halide light-sensitive color photographic

A silver halide color photographic light-sensitive material is disclosed, which is excellent in color reproducibility and storability and has lowered color stain. The light-sensitive material comprises a support having thereon a silver halide emulsion layer comprising silver halide grains optically sensitized by a sensitizing dye represented Formula I and a sensitizing dye represented by Formula II; ##STR1##

Silver halide color photographic light-sensitive material offering

A silver halide color photographic light sensitive material excellent in both sharpness and whiteness of background while being capable of satisfactorily displaying the yellow coupler characteristics including an excellent color reproduction is provided, wherein the silver halide color photographic light sensitive material contains a compound represented by the following Formula [I] in at least one of the photographic component layers thereof, a compound represented by the following Formula [II] in at least one of the silver halide emulsion layers thereof, and a compound represented by the following Formula [III] in at least one of the photographic component layers; and ##STR1##

Silver halide color photographic light sensitive material

The improved silver halide photographic material is such that the silver halide grains contained in at least one light-sensitive silver halide emulsion layer are spectrally sensitized with a sensitizing dye represented by the following general formula: ##STR1## where R.sup.1 and R.sup.2 each represents an alkyl group having 1-10 carbon atoms or an alkenyl group having 3-10 carbon atoms; R.sup.3 represents a hydrogen atom, a heterocyclic group, an aryl group or an alkyl group; R.sup.4 and R.sup.5 each represents an alkyl group; Z.sup.1 represents the group of non-metallic atoms necessary to form a 5-membered monocyclic or condensed nitrogenous hetero ring; L.sup.1 and L.sup.2 each represents a methine group, provided that R.sup.1 or R.sup.2 may combine with L.sup.1 or L.sup.2, respectively, to form a 5- or 6- membered hereto ring; X.sup.1 represents an ion that cancels an electric charge in the molecule; .sup.1 represents the number of ions necessary to cancel electric charges in the molecule. The silver halide photographic material has an enhanced spectral sensitivity in the red wavelength range while causing less color contamination.

Silver halide photographic materials

The present invention relates to a silver halide photographic material having one or more light-sensitive silver halide emulsion layers on a support, which said photographic material is characterized in that at least one of said light-sensitive emulsion layers contains silver halide grains that are spectrally sensitized with at least one of the spectral sensitizers represented by the following general formula (I) and further contains at least one of the compounds represented by the following general formulas (II) and (III): ##STR1## wherein the variables are as defined in the specification.

Spectrally sensitized silver halide photographic material

A silver halide photographic light sensitive material containing a water-soluble oxonol dye is disclosed. The dye is represented by the following Formula I: ##STR1## wherein R.sup.1 and R.sup.2 are each a hydrogen atom, an alkyl group, an aryl group or a alkenyl group; R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are each a hydrogen atom, an alkyl group, an aryl group, an alkenyl group or a heterocyclic group provided that at least one of said R.sup.3 , R.sup.4, R.sup.5 and R.sup.6 is a heterocyclic group and R.sup.3 and R.sup.4, and R.sup.5 and R.sup.6 are respectively allowed to bond to form a heterocyclic ring; and the groups represented by said R.sup.1 through R.sup.6 are allowed to be substituted or unsubstituted provided that at least one of said groups a water-solubilizing group or a group having a water solubilizing group; L.sub.1, L.sub.2 and L.sub.3 are each a substituted or unsubstituted methine group; and n is an integer of zero, 1 or 2.

Growing community of inventors

Hino, Japan

Shinri Tanaka