Fuji Photo Film Company, Limited

Fujifilm Corporation

Katsuhisa Ohzeki

Takanori Hioki

Hiroyuki Suzuki

Masahiro Asami

Tetsuo Nakamura

Toshihiro Kariya

Hideaki Naruse

Shinya Hakuta

Naoharu Kiyoto

Takuya Yokokawa

Haruyasu Nakatsugawa

Tetsuro Kojima

Hiroyuki Yoneyama

Tetsuro Mitsui

Shigeharu Urabe

Mitsuo Saitou

Yasunori Ichikawa

Naoyuki Hanaki

Sumito Yamada

Takeharu Tani

Shoji Ishiguro

Takashi Katoh

Katsuyuki Takada

Kenji Naoi

Yasuaki Deguchi

Akito Yokozawa

Munehisa Fujita

Masaaki Miki

Shigeru Shibayama

Fumiko Shiraishi

Yasuhiro Mitamura

Katsumi Hirano

Hiroyuki Asanuma

Ryou Matsuno

Kenichi Harashima

Yuji Yoshida, Deceased

Tetsurou Mitsui

Nobuo Nishida

A multilayer structure including a metal particles-containing layer, a layer A having a refractive index, n1, and a layer B having a refractive index, n2, and satisfying one of the conditions (1-1) and (2-1) is capable of suppressing reflection of light at a wavelength &#x3bb; intended to prevent reflection.1&#x3c;2 and&#x3bb;/4+&#x3bb;/2&#x3c;1&#xd7;1&#x3c;&#x3bb;/2+&#x3bb;/2&#x2003;&#x2003;Condition (1-1)1&#x3e;2 and0+&#x3bb;/2&#x3c;1&#xd7;1&#x3c;&#x3bb;/4+&#x3bb;/2&#x2003;&#x2003;Condition (2-1)wherein m represents an integer of 0 or greater; &#x3bb; represents a wavelength with a unit of nm intended to prevent reflection; n1 represents a refractive index of the layer A; and d1 represents a thickness with a unit of nm of the layer A.

Multilayer structure and laminate structure

An infrared ray shielding film having a metal particle-containing layer in which hexagonal to circular tabular metal particles are contained in 60% by number or more relative to total number of the metal particles contained in the metal particle-containing layer exhibits excellent infrared ray reflection at a wide range of from 800 nm to 2000 nm and shows little heat ray absorption.

Infrared ray shielding film

A silver halide color photographic light-sensitive material having, on a support, at least one red-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer and at least one blue-sensitive silver halide emulsion layer, characterized in that at least one of the silver halide emulsion layers contains a silver halide emulsion having a silver chloride content of 90 mole % or above, the silver halide emulsion contains at least one kind of selenium compound, and the silver halide emulsion layer containing the silver halide emulsion has a characteristic curve satisfying the following relation (1);2.0&#x2267;&#x3b3;/&#x3b3;&#x2267;0.5&#x2003;&#x2003;Relation (1)wherein &#x3b3; represents a gradient of the characteristic curve, &#x3b3;represents a gradient in the case of 1&#xd7;10-second exposure and &#x3b3;represents a gradient in the case of 100-second exposure.

Silver halide color photographic light-sensitive material

A silver halide emulsion containing silver halide grains with a silver chloride content of at least 95 mole %, being sensitized with selenium and gold, and further containing at least two compounds each having a function of oxidizing metallic silver clusters; a silver halide photographic material containing the same; and a silver halide photographic material having red-, green, and blue-sensitive silver halide emulsion layers, wherein one of the emulsion layers contains a silver halide emulsion with a silver chloride content of at least 95 mole %, and the silver halide emulsion contains a selenium compound and a metal complex of formula (D1);[MXL]&#x2003;&#x2003;formula (D1)wherein Mrepresents Cr, Mo, Re, Fe, Ru, Os, Co, Rh, Pd, or Pt; Xrepresents a halogen ion; Lrepresents a ligand other than X; n represents 3, 4, 5, or 6; and m represents 4-, 3-, 2-, 1-, 0 or 1+.

Silver halide emulsion and silver halide color photographic light-sensitive material

A photothermographic material having, on at least one side of a support, an image forming layer including at least a photosensitive silver halide, a non-photosensitive silver salt of a fatty acid, a reducing agent, and a binder, wherein 1) the photosensitive silver halide has an average silver iodide content of 40 mol % or higher, and 2) the photothermographic material includes a compound represented by the following formula (I) or a salt thereof:R&#x2014;C&#x2261;C&#x2014;R'&#x2003;&#x2003;Formula (I)wherein Rand R&#x2032; each independently represent a hydrogen atom, or a substituted or unsubstituted alkyl group, aryl group, or heterocyclic group, and Rand R&#x2032; are not simultaneously a hydrogen atom. The invention provides a photothermographic material which exhibits high sensitivity and excellent image storability, and an image forming method.

Photothermographic material and image forming method

A method of producing (1) metal particles or (2) metal fine-particles, which contains: jetting out two solutions of (1) a metal salt solution and a reducing agent solution, or (2) a metal ion-containing solution and a hydroxide ion-containing solution, from respective nozzles to a mixing chamber, to give a mixed reaction solution; and discharging the mixed reaction solution from a discharging port having a diameter smaller than a diameter of the mixing chamber, wherein one of the two solutions is made into straightly-going flow, which is jetted from a nozzle having a diameter smaller than the diameter of the mixing chamber to the mixing chamber, and the other solution is jetted out, as flow substantially orthogonal to the straightly-going flow, to a position before a position where eddy viscosity generated by the straightly-going flow would be maximum.

Method of producing metal particles, and metal oxide obtained from the particles

Disclosed is a silver halide photographic material which comprises at least one methine dye represented by the following formula (I): wherein Y represents a furan ring or a pyrrole ring, and Y may further be condensed with other 5- or 6-membered carbocyclic ring or heterocyclic ring, or may have a substituent; the bond between two carbon atoms in which Y is condensed may be a single bond or a double bond; Z represents an atomic group necessary to form a 5- or 6-membered nitrogen-containing heterocyclic ring, and Z may further be condensed with other 5- or 6-membered carbocyclic ring or heterocyclic ring; R represents a substituted or unsubstituted alkyl group, aryl group, or heterocyclic group; D represents a group necessary to form a methine dye; Land Leach represents a methine group; p represents 0 or 1; M represents a counter ion; and m represents a number of 0 or higher necessary to neutralize the charge in the molecule.

Silver halide photographic material and methine dye

A silver halide emulsion containing silver halide grains with a silver chloride content of at least 95 mole %, being sensitized with selenium and gold, and further containing at least two compounds each having a function of oxidizing metallic silver clusters; a silver halide photographic material containing the same; and a silver halide photographic material having red-, green, and blue-sensitive silver halide emulsion layers, wherein one of the emulsion layers contains a silver halide emulsion with a silver chloride content of at least 95 mole %, and the silver halide emulsion contains a selenium compound and a metal complex of formula (D1);[MXL]&#x2003;&#x2003;formula (D1) wherein Mrepresents Cr, Mo, Re, Fe, Ru, Os, Co, Rh, Pd, or Pt; Xrepresents a halogen ion; Lrepresents a ligand other than X; n represents 3, 4, 5, or 6; and m represents 4&#x2212;, 3&#x2212;, 2&#x2212;, 1&#x2212;, 0, or 1+.

A process of producing a silver halide photographic emulsion containing tabular silver halide grains having an aspect ratio of 5 or more, which comprises using silver halide fine grains as prepared by the following method in at least one of a nucleation step and a growth step of the production of silver halide emulsion, the method comprising mixing at least a silver salt aqueous solution and a halide aqueous solution to prepare silver halide fine grains, wherein one of the silver salt aqueous solution and the halide aqueous solution is introduced as a jet flow into a mixer; a region where the jet flow slows down is provided within the mixer; and the other solution is introduced into the jet flow before the velocity of the jet flow has become {fraction (1/10)} of the velocity at the time when the jet flow comes into the slowing-down region.

Process of producing silver halide photographic emulsions

The mixing state of static mixing is optimized, so that it is possible to form silver halide emulsion particles in small sizes with an excellent mono-dispersion characteristic. An aqueous solution of haloid salt is blown out from a first nozzle into a mixing chamber as a rectilinear flow of turbulent flow, and before eddy viscosity formed when the rectilinear flow is blown out from the first nozzle of a small diameter to the mixing chamber of a greater diameter reaches a maximum, or before a maximum flow speed of the rectilinear flow is reduced to {fraction (1/10)} or below, an aqueous solution of silver nitrate is blown out from a second nozzle as a crossflow of turbulent flow which crosses the rectilinear flow at a substantially right angle and is entrained by the rectilinear flow, so that the two solutions are allowed to mix and react with each other instantaneously, and a liquid resulting from the mixing and reaction is discharged from a discharge duct.

Method and apparatus for forming silver halide emulsion particles and method for forming fine particles

A producing method of a silver halide emulsion comprising the steps of adding silver halide fine grains AgX having an to a silver halide seed crystal emulsion containing at least water, dispersion medium 1 and silver halide crystal, and growing the seed crystal by dissolving the added AgX , wherein AgX are formed in dispersion medium solution 2 containing dispersion medium 2, the pH of dispersion medium solution 2 of the time when AgX are formed is from 7.3 to 12.2, the average equivalent-circle projected area diameter of AgX is from 0.001 to 0.2 &mgr;m, and AgX are non-twin crystal grains not substantially having twin planes.

Photographic silver halide emulsion

A silver halide photographic light-sensitive material is disclosed, including at least one silver halide emulsion layer, wherein the silver halide grain contained in the emulsion layer is silver chloroiodide or silver chloroiodobromide having a silver chloride content of 90 mol % or more and a silver iodide content of 0.01 to 1.0 mol %, at least one hexacyano complex is doped in an amount of at least 1&times;10 mol % based on the total silver amount, and the emulsion layer contains a methine dye represented by the formula (I) as defined.

Silver halide photographic light-sensitive material

The present invention provides a silver halide photographic material that is excellent in photographic speed as well as image graininess and exhibits low residual color even after rapid processing. The silver halide photographic material contains a compound represented by formula (I) and a compound represented by formula (II), as defined.

Silver halide photographic material

There is disclosed a silver halide photographic light-sensitive material comprising at least a silver halide emulsion layer containing a yellow dye-forming coupler, a silver halide emulsion layer containing a magenta dye-forming coupler and a silver halide emulsion layer containing a cyan dye-forming coupler, on a support, wherein: the silver halide emulsion layer containing a yellow dye-forming coupler is located more apart from the support than at least one of the silver halide emulsion layer containing a magenta dye-forming coupler and the silver halide emulsion layer containing a cyan dye-forming coupler, and silver halide grains contained in the silver halide emulsion layer containing a yellow dye-forming coupler comprises a high silver chloride emulsion in which the content of silver halide is 80 mol % or more. There is also disclosed a method of forming an image using the light-sensitive material.

Silver halide photographic light-sensitive material and image forming method

Disclosed is a silver halide color photographic photosensitive material in which the photosensitive layer of the photosensitive material comprising a silver halide emulsion, a developing agent and a coupler is put together with the processing layer of a processing material so that these layers are heated to form a color image in the photosensitive material, said silver halide grains in the photosensitive layer having a silver chloride content of 50 mol% or more, wherein (1) the silver halide grains, in which 50% or more of the exterior faces of the grain is made up of a (111) plane, account for 50% or more of the total projected area of the silver halide grains of the emulsion, and the developing agent has a specific molecular structure, or (2) the tabular silver halide grains having an aspect ratio of 2 or more, which have the exterior faces of the grain made up of a (100) plane and a plane of projection of the grain in a shape of a rectangle with a length to width ratio ranging from 1:1 to 1:2, or which have the exterior faces of the grain made up of a (111) plane and a plane of projection in the shape of a hexagon with the ratio of the lengths of the neighboring sides ranging from 1:1 to 1:10, account for 50% or more of the total projected area of the silver halide grains of the emulsion, and the coupler is a pyrazolotriazole coupler having a specific molecular structure.

Growing community of inventors

Kanagawa, Japan

Katsuhisa Ohzeki