Fuji Photo Film Company, Limited

Jun Hayashi

Akira Sato

Haruo Takei

Masanao Hinata

Atsuo Iwamoto

Keisuke Shiba

Takeshi Hirose

Atsuaki Arai

Tadashi Ikeda

Nobuo Furutachi

Harumi Katsuyama

Kenji Matsumoto

Takeo Sakai

Takeshi Kato

Toshiaki Aono

Tadao Shishido

Akikazu Mikawa

Shoichi Yamamoto

Kazuharu Kawashima

Akira Tanaka

A solid-state color imaging device carrying a micro-color filter which is reduced in its alkali metal ion content to a level of not more than 100 ppm is prepared through formation of a substrate of at least one colored resin layer of the micro-color filter using, as the substrate material, a water-soluble protein such as gelatin whose alkali metal ion content is not more than 20 ppm.

Solid-state color imaging device and the preparation of same

A method of modifying a surface of a colored micro-filter element for a color imaging device,

Method of modifying surface of colored micro-filter element

A silver halide photographic emulsion selectively spectrally sensitized, particularly to red light, with a combination of at least one sensitizing dye represented by general formula (I): ##STR1## wherein Z.sup.1 and Z.sup.2 each represents the atoms necessary to form a benzothiazole nucleus or a benzoselenazole nucleus, R.sup.1 and R.sup.2 l each represents an alkyl group or a substituted alkyl group, wherein at least one of R.sup.1 or R.sup.2 should represent a sulfo group-containing substituted alkyl group, a carboxyalkyl group or a hydroxyalkyl group, R.sup.3 represents an alkyl group, X.sub.1 represents an acid anion, and m represents 1 or 2, wherein m equals 1 when the dye forms an intramolecular salt (betaine-like structure); at least one sensitizing dye represented by general formula (II): ##STR2## wherein Z.sup.3 represents a sulfur atom or a selenium atom, Z.sup.4 represents the atoms necessary to form a benzothiazole nucleus, a benzoselenazole nucleus, a naphtho[1,2-d]thiazole nucleus or a naphtho[1,2-d]selenazole nucleus, R.sup.4 and R.sup.5 each represents an alkyl group or a substituted alkyl group, wherein at least one of R.sup.4 or R.sup.5 should be a sulfo group-containing substituted alkyl group, a carboxyalkyl group or a hydroxyalkyl group, R.sup.6 represents an alkyl group, an aryl group, a furyl group or a thienyl group, X.sub.2 represents an acid anion, and n represents 1 or 2, wherein n equals 1 when the dye forms an intramolecular salt (betaine-like structure), and at least one benzimidazolothiacarbocyanine dye, which exhibits increased color reproducibility, high sensitivity and reduced residual coloration.

Silver halide photographic emulsion

A silver halide photographic emulsion spectrally sensitized with a sensitizing combination of at least one sensitizing dye represented by General formula (I), at least one sensitizing dye represented by General formula (II) and at least one sensitizing dye represented by General formula (III): ##STR1## wherein Z.sup.1 and Z.sup.2 each is the atoms necessary to form a benzothiazole nucleus or a benzoselenazole nucleus, R.sup.1 and R.sup.2 each is an alkyl group or a substituted alkyl group, wherein at least one of R.sup.1 and R.sup.2 is a substituted alkyl group having a sulfo group, R.sup.3 is an alkyl group, X.sub.1 is an acid anion and m is 1 or 2 and when the dye forms an intermolecular salt (betaine like structure), m is 1; ##STR2## wherein Z.sup.3 is a sulfur atom or a selenium atom, Z.sup.4 is the atoms necessary to form a benzothiazole nucleus, a benzoselenazole nucleus, a naphtho[1,2-d]thiazole nucleus or a naphtho[1,2-d]selenazole nucleus, R.sup.4 and R.sup.5 each is an alkyl group or a substituted alkyl group, wherein at least one of R.sup.4 and R.sup.5 is a substituted alkyl group having a sulfo group, R.sup.6 is an alkyl group, an aryl group, a furyl group or a thienyl group, X.sub.2 is an acid anion and n is 1 or 2, and n is 1 when the dye forms an intermolecular salt (betaine like structure); wherein Z.sup.5 is the atomic group necessary to complete a naphthothiazole nucleus, Z.sup.6 is the atomic group necessary to complete a benzimidazole nucleus, R.sup.7 and R.sup.8 each is an alkyl group or a substituted alkyl group, where at least one of R.sup.7 and R.sup.8 is a carboxyalkyl group or a substituted alkyl group having a sulfo group, X.sub.3 is an acid anion, and p is 1 or 2, and p is 1 when the dye forms an intermolecular salt.

Photographic silver halide emulsions

A multilayer color photographic material with improved color reproduction comprising a support having thereon at least two photosensitive silver halide emulsion layers which provide color images having different colors from each other, the multilayer color photographic material containing at least one interlayer color correction coupler as defined hereinafter.

Multilayer color photographic materials utilizing an interlayer

A spectrally sensitized silver halide photographic emulsion comprising a silver halide emulsion containing a combination of at least one sensitizing dye represented by the following general formula (I): ##STR1## at least one sensitizing dye represented by the following general formula (II): ##STR2## and at least one organic heterocyclic compound represented by the following general formula (III) or (IV): ##STR3## wherein Z.sup.1 and Z.sup.2, which may be the same or different, each represents a group of atoms necessary for forming a thiazole nucleus or a selenazole nucleus; Z.sup.3 has the same meaning as Z.sup.1 and Z.sup.2 ; Z.sup.4 represents a group of atoms necessary for forming an imidazole nucleus or an oxazole nucleus; Z.sup.5 represents a group of atoms necessary for forming an imidazole nucleus; R.sup.1, R.sup.2, R.sup.4, R.sup.5 and R.sup.7, which may be the same or different, each represents an alkyl group, with at least one of R.sup.1, R.sup.2, R.sup.4 and R.sup.5 being an alkyl group substituted with a carboxy group, a hydroxy group or a sulfo group; R.sup.3 and R.sup.6, which may be the same or different, each represents a lower alkyl group, an aryl group or a hydrogen atom; R.sup.8 represents a hydrogen atom or an alkylene group necessary for forming a ring through a combination with R.sup.7 ; R.sup.9 represents an aryl group (including a monocyclic aryl group and a bicyclic aryl group); X.sub.1.sup.-, X.sub.2.sup.- and X.sub.3.sup.- each represents an acid anion; m, n and p each represents 1 or 2, but when m, n or p is 1, the dye forms an intramolecular salt. The photographic emulsion exhibits a high sensitivity with a reduced fog and stain, and a good stability with the lapse of time during and after production, and further an improved latent image stability with the lapse of time of from image-wise exposure to development.

Silver halide photographic emulsion containing cyanine and hemicyanine

A silver halide photographic emulsion containing, in supersensitizing amounts, the combination of

Supersensitized photographic emulsion

A silver halide multilayer color sensitive material comprising a red-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer and a blue-sensitive silver halide emulsion layer on a support, wherein each silver halide emulsion layer contains a non-diffusible image forming coupler, the improvement which comprises at least one of the silver halide emulsion layers comprising an upper unit silver halide emulsion layer, a middle unit silver halide emulsion layer and a lower unit silver halide emulsion layer, in which the sensitivity of the three unit silver halide emulsion layers decreases in order from the upper unit silver halide emulsion layer to the lower unit silver halide emulsion layer, and at least the middle unit silver halide emulsion layer contains a development inhibitor releasing compound.

Multilayer color sensitive materials

A supersensitized silver halide photographic emulsion containing a cyan coupler and, in combination, at least one of the sensitizing dyes represented by the following general formula (I) and at least one of the sensitizing dyes represented by the general formula (II): ##STR1## WHEREIN W.sup.1 and W.sup.2 each represents a hydrogen atom, an alkyl group, an alkoxyl group, a halogen atom, an alkoxycarbonyl group, an acyl group or an aryl group; R.sup.1 and R.sup.2 each represents a sulfoalkyl group; R.sup.3 represents an alkyl group or an allyl group; X.sub.1 represents an acid anion; and m is 1 or 2, m being 1 in the case that the dye forms an inner salt of a betaine-like structure; ##STR2## wherein Z.sup.1 and Z.sup.2 each represents an atomic group required for forming a benzothiazole nucleus, a benzoselenazole nucleus, a .beta.-naphthothiazole nucleus or a .beta.-naphthoselenazole nucleus; R.sup.4 and R.sup.5 each represents an aliphatic group and at least one of R.sup.4 and R.sup.5 represents a carboxyalkyl group or a sulfoalkyl group; R.sup.6 represents an alkyl group, an aryl group, a thienyl group or a furyl group; X.sub.2 represents an acid anion; and n is 1 or 2, n being 1 in the case that the dye forms an inner salt of a betaine-like structure.

A silver halide photographic emulsion spectrally sensitized with a combination of sensitizing dyes consisting essentially of at least one sensitizing dye represented by the following general formula [I] and at least one sensitizing dye represented by the following general formula [II] in supersensitizing amounts: ##STR1## wherein R.sup.1 and R.sup.2 each is an alkyl group, R.sup.3 is an alkyl group, X.sub.1 is an acidic anion, m is 1 or 2, and m is 1 when the dye forms an intramolecular salt (betaine-like structure). ##STR2## WHEREIN Z.sup.1 is a sulfur atom or a selenium atom, Z.sup.2 is an atomic group necessary to form a benzothiazole ring, a benzoselenazole ring, a naphtho[1,2-d]thiazole ring or a naphtho[1,2-d]selenazole ring, R.sup.4 and R.sup.5 is an alkyl group, R.sup.6 is an alkyl group, a phenyl group, an aralkyl group, a furyl group or a thienyl group, X.sub.2 is an acidic anion, n is 1 or 2, and n is 1 when the dye forms an intramolecular salt (betaine-like structure).

A spectrally sensitized silver halide photographic emulsion containing, in combination, four carbocyanine sensitizing dyes.

Silver halide photographic emulsion sensitized to red with four

A process for forming color photographic images which comprises color-developing at temperatures higher than about 30.degree. C a multilayer color photographic material comprising a support having thereon at least two photosensitive emulsion layers each containing a coupler which can form a non-diffusible colored dye on coupling with the oxidation product of an aromatic primary amino color developing agent and at least one fogged emulsion layer containing a coupler which can form a non-diffusible colored dye on coupling with the oxidation product of an aromatic primary amino color developing agent.

Process of forming color photographic images

A multilayer color photographic light-sensitive material comprising a support having thereon at least two silver halide emulsion layer units, each of which is sensitive to radiation of a substantially different wavelength region within the wavelength region of from about 220 nm to about 800 nm and contains a color-forming coupler capable of forming a dye on coupling with an oxidized primary aromatic amine developing agent, with at least one of the emulsion layer units containing an ICC coupler represented by the general formula (I) ##STR1## wherein Cp represents a coupler residue; L and M each represents a nitrogen atom or a methine group, V represents a monocyclic or dicyclic aromatic ring of the benzene series, and at least one of L and M represnts a nitrogen atom; which releases a triazole derivative or a diazole derivative on coupling with an oxidized primary aromatic amine developing agent, and with the emulsion layer unit containing the ICC coupler represented by the general formula (I) or another layer containing a hydroquinone derivative represented by the general formula (II) ##STR2## wherein A and A' each represents a hydrogen atom or a group capable of being eliminated by an alkali, and A' can combine with R to Q to form a ring; P, Q and R each represents a hydrogen atom, an alkyl group, an aryl group, an alkylthio group, an arylthio group, a hydroxy group, a halogen atom, an alkoxy group, an aryloxy group, a heterocyclic ring or an --S--Z group, and P and Q can combine to form a ring; and Z represents a heterocyclic ring residue substantially photographically inert in a bonded state; which releases imagewise depending upon the development a compound having a mercapto group and/or a coupler which releases a compound having a mercapto group on coupling with an oxidized primary aromatic amine developing agent. The multilayer color photographic light-sensitive material provides color images having improved color reproduction, sharpness and graininess.

Multilayer color photographic light-sensitive material

A method for forming photographic images of particularly improved sharpness in which a photographic element is developed in the presence of an alkylene oxide polymer and a compound of the general formula ##STR1## wherein Q represents the atoms required to form an optionally substituted, defined heterocyclic ring and R is as defined in the specification, or a compound of the general formula ##STR2## wherein W is a sulfur, selenium or oxygen atom or a group &gt;N--R.sub.3, R.sub.1, R.sub.2, and R.sub.3 each is an optionally substituted, defined alkyl group and Z represents the atoms required to form an optionally substituted, defined heterocyclic ring.

Developing a silver ha1ide emulsion in contact with a heterocyclic

An incorporated-coupler multi-layered color photographic light-sensitive material which comprises a support having thereon at least two light-sensitive emulsion layer units which provide, upon color development, images having substantially different hues, at least one of the light-sensitive emulsion layer units comprising two or more unit layers in which at least one of which unit layers contain an ICC uncolored coupler alone or in combination with another coupler.

Growing community of inventors

Minami-ashigara, Japan

Jun Hayashi