Fuji Photo Film Company, Limited

Fujifilm Corporation

Udc Ireland Limited

Atsushi Matsunaga

Ryuji Shinohara

Hideki Kaneiwa

Kiyoshi Morimoto

Tadashi Inaba

Shinichi Ichikawa

Yoshio Ishii

Hirotomo Sasaki

Hiroyuki Suzuki

Takanori Hioki

Hiroyuki Mifune

Makoto Kikuchi

Masaru Yoshikawa

Naoyuki Hanaki

Mamoru Sakurazawa

Masaru Takasaki

Masahiko Taniguchi

Munehisa Fujita

Takefumi Hara

Yoshitaka Kitamura

Masafumi Mizuno

Tomoki Tasaka

An organic electroluminescent element having a small reduction rate in the luminance immediately after the start of light emission is provided. The organic electroluminescent element includes a substrate, a pair of electrodes including an anode and a cathode, disposed on the substrate, a light emitting layer disposed between the electrodes, and at least one organic layer disposed between the light emitting layer and the anode, in which at least one kind of a specific compound including a fluorene structure is contained in at least one organic layer between the light emitting layer and the anode, and at least one kind of a specific compound including a carbazole structure or a fluorene structure is contained as a light emitting material in the light emitting layer.

Organic electroluminescence element

The present invention relates to a silver halide color photographic light-sensitive material wherein at least one of light-sensitive silver halide emulsion layers includes a silver halide emulsion having a silver chloride content of at least 95 mol % and a silver iodide content of 0.05 mol % to 0.75 mol % and/or a silver bromide content of 0.05 mol % to 4.00 mol % and further at least one compound represented by the following formula (I):X-(L)-Y&#x2003;&#x2003;Formula (I) wherein X represents a group adsorptive to a silver halide, L represents a divalent connecting group comprising one of an atom and an atomic group including at least one of a carbon atom, a nitrogen atom, a sulfur atom and an oxygen atom, Y denotes a reducible group and n denotes an integer of 0 or 1.

Silver halide color photographic light-sensitive material and image formation method using the same, silver halide emulsion, reducing compound having group adsorptive to silver halide and method for producing the same

A silver halide color photosensitive material, wherein the total coating amount of silver of the photosensitive silver halide is 6.0 g/mor less in terms of metal silver, and the photosensitivity is the ISO speed of 400 or more, the silver halide color photosensitive material further comprising at least one compound selected from a group consisting of the following type 1 and type 2:

Silver halide color photosensitive material

A control apparatus for an optical density changing element comprising: an electromotive force generating element comprising an electromagnetic wave sensor (example: phototransistor) and a voltage source (example: battery), wherein the electromotive force generating element generates an electromotive force; an optical density changing element (light regulating filter) including an electrochromic material driven by the electromotive force; and a resistor connected in parallel to the optical density changing element.

Control apparatus for optical density changing element

An optical density changing element comprising: an anode; and a cathode, wherein at least one of the anode and the cathode comprises a first compound that changes a spectral absorption spectrum of the first compound in a wavelength of 400 to 700 nm by providing an electron to or receiving an electron from the at least one of the anode and the cathode, and wherein at least one of the anode and the cathode comprises a second compound that does not change a spectral absorption spectrum of the second compound in a wavelength of 400 to 700 nm by providing an electron to or receiving an electron from the at least one of the anode and the cathode.

Optical density changing element, optical element and photographing unit

An electrochromic element wherein, in a colored state of the electrochromic element, a first average optical density in a first wavelength range of 450 to 470 nm, a second average optical density in a second wavelength range of 540 to 560 nm and a third average optical density in a third wavelength range of 630 to 650 nm have a fluctuation (difference of a maximum value and a minimum value of the first to third average optical densities) equal to or less than 0.5.

Electrochromic element, optical density changing element, optical element and photographing unit

To provide an optical density-changing element which has excellent properties that it can be brought into a colored state by applying only a low voltage, that it shows a rapid response speed and becomes completely colorless when restored to a bleached state from the colored state, and which can undergo a change in optical density in response to an applied voltage,

Optical density-changing element, optical element and photographic unit

An optical element comprises: an electromotive force-generating element that generates an electromotive force in response to electromagnetic wave; and an optical density-changing element that changes its optical density according to the electromotive force, the optical density-changing element comprising: at least one of metal sulfide and metal nitride; and a material that causes a change of the optical density and adsorbs to said at least one of metal sulfide and metal nitride.

Optical element changing optical density in response to electromagnetic wave

A silver halide emulsion having a silver chloride content of 90 mol % or more which has been chemically sensitized with a compound capable of releasing an Au Ch ion is described, wherein grains of the silver halide contain in the shell portion thereof 0.01 to 0.50 mol % of silver iodide per mol of the total silver, with Ch representing S, Se or Te.

Silver halide emulsion and image-forming method using silver halide color photographic light-sensitive material containing the same

The present invention provides a tabular internal latent image type direct positive photographic silver halide emulsion which provides a high sensitivity and a low re-reversal negative sensitivity and a color diffusion transfer photographic light-sensitive material comprising such an emulsion. The present invention also provides an internal latent image type direct positive photographic silver halide emulsion which can be prepared with a good reproducibility and a color diffusion transfer photographic light-sensitive material less susceptible to variation of sensitivity and S/N ratio comprising such an emulsion. An internal latent image type direct positive photographic silver halide emulsion comprising tabular silver halide grains having an average grain diameter of not less than 0.3 &mgr;m and an aspect ratio (diameter of silver halide grain in circle equivalence/thickness of silver halide grain) of from not less than 2 to not more than 100 in an amount of not less than 50% of all silver halide grains as calculated in terms of area is provided, wherein the average grain thickness along the main plane of the external shell thereof is from not less than 0.2 &mgr;m to not more than 1.5 &mgr;m and the average grain thickness perpendicular to the main plane of the external shell thereof is from not less than 0.04 &mgr;m to not more than 0.30 &mgr;m. An internal latent image type direct positive photographic silver halide emulsion is provided, which is prepared from a seed crystal emulsion which has been prepared via desalting process.

Direct positive photographic silver halide emulsion and color photographic light-sensitive material comprising same

Silver halide photosensitive material and isothiazolidine-3-one derivative

SILVER HALIDE COLOR PHOTOGRAPHIC LIGHT-SENSITIVE MATERIAL AND IMAGE FORMATION METHOD USING THE SAME, SILVER HALIDE EMULSION, REDUCING COMPOUND HAVING GROUP ADSORPTIVE TO SILVER HALIDE AND METHOD FOR PRODUCING THE SAME

A silver halide photographic light-sensitive material is disclosed, comprising a support having thereon at least one silver halide emulsion layer, which contains at least one compound represented by formula (1) or (A-1).

Silver halide photographic light-sensitive material

An internal latent image-type direct positive silver halide photographic emulsion is disclosed, comprising a silver halide grain prepared to have a composite structure such that the iodide content of the silver halide in the silver halide phase formed on the surface of a silver halide grain is higher than the iodide content of the silver halide in the phase on the inner side, wherein the average iodide content of all grains is less than 1.0 mol % and the amount of iodide supplied for the silver halide phase formed on the surface of the grain is from 0.005 mol % to less than 0.3 mol % based on all grains. Also disclosed is a color diffusion transfer light-sensitive material using the emulsion.

Internal latent image-type direct positive silver halide photographic emulsion and color diffusion transfer light-sensitive material using the same

Disclosed is a silver halide emulsion, which comprises at least one methine dye represented by the general formula (I): ##STR1## wherein MET represents an atomic group having a methine dye structure; Q represents a divalent linking group containing at least one carbon, nitrogen, sulfur or oxygen atom; l.sub.1 represents an integer 1 or 2; l.sub.2 represents an integer 0 or 1, l.sub.3 represents an integer from 1 to 4; and Ar represents an aromatic polycyclic group formed of 8 or more atoms containing at least one nitrogen atom, with the proviso that said nitrogen atom is in a form such that tautomerism does not produce ##STR2## A silver halide photographic material is also disclosed which comprises on a support a silver halide photographic emulsion layer comprising silver halide grains containing iron ions and having a localized phase with a high iron ion concentration and at least one methine dye represented by general formula (I') and which exhibits a blue sensitivity difference of 0.1 or less between when it is developed after exposure in vacuo under 10.sup.-5 torr and when it is developed after exposure in air under 760 torr: ##STR3## wherein MET, Q, l.sub.1, l.sub.2, and l.sub.3 are as defined for formula I and Ar' represents an aromatic polycyclic group formed of 8 or more atoms.

Growing community of inventors

Kanagawa, Japan

Atsushi Matsunaga