Konishiroku Photo Industry Co., Ltd.

Konica Corporation

Konica Minolta Medical and Graphic, Inc.

Konica-minolta Holdings, Inc.

Konica Technosearch Corp.

Wataru Ishikawa

Toyoaki Masukawa

Shigeto Hirabayashi

Kiyoshi Yamashita

Tawara Komamura

Masaru Iwagaki

Takaya Endo

Kenichiro Okaniwa

Katsunori Kato

Tetsuya Harada

Takashi Sasaki

Atsushi Nakajima

Toshiyuki Takabayashi

Mitsuto Fujiwhara

Takeshi Sampei

Kazuo Asano

Shoji Nishio

Satoru Ikeuchi

Shoji Kikuchi

Tamotsu Kojima

Tadashi Sekiguchi

Hajime Wada

Seiji Hidaka

Ryosuke Satoh

Tugumoto Usui

Hidetaka Deguchi

Takeshi Sanpei

Hirohide Ito

Toshiki Komaita

Mariko Kato

Takehiro Kobayashi

Kimie Hoshino

Disclosed is an organic electroluminescence device which can be stably produced by a wet process and exhibits enhanced external quantum efficiency and reduced coating unevenness and a production method thereof. Specifically, disclosed is a method of producing the organic electroluminescence device comprising at least a layer, which is formed by a wet process comprising of coating a solution of an organic material dissolved in a solvent to form a liquid layer, followed by removal of the solvent by blowing air to form the layer, wherein the relative drying rate of the solvent to butyl acetate is from 1 to 1000, (based on the drying rate of butyl acetate being 100), the thickness of the formed liquid layer is from 1 to 100 &#x3bc;m, a air-blowing rate is from 0.1 to 5 m/s and the time between completion of coating and start of blowing is from 0 to 60 sec.

Organic electroluminescence device and production method thereof

Disclosed is an inkjet recording method wherein an image is formed on a recording medium by spraying an ink containing at least a photopolymerizable compound onto the recording medium through a nozzle of an inkjet head. This inkjet recording method enables to perform a stable image recording by suppressing formation of a precipitate in the head. This inkjet recording method is characterized in that in an inkjet head, which is used for forming an image on a recording medium by spraying an inkjet ink containing at least a photopolymerizable compound through a nozzle, the surface of at least a part of metals constituting the internal member of the inkjet head which is in contact with the inkjet ink is subjected to a passivation treatment or an insulation coating treatment.

Ink-jet head, ink-jet printer, and ink-jet recording method

An ink-jet recording device which is equipped with a recording head to eject one type or plural types of inks containing a photo-curable component onto a recording medium and a light irradiation device to cure the ink by irradiating light onto the ink having deposited on the recording medium, wherein ink quantity cured by one time light irradiation is not less than 5 g/m, and an amount of a photo-polymerization initiator in the ink is not more than 5 weight % based on the total weight of the ink.

Image forming method and ink-jet recording device utilizing photo-curable ink, and inkset, ink-jet recording method and ink-jet recording device utilizing photo-curable ink

Disclosed are and actinic ray curable composition comprising, as a photopolymerizable compound, both an oxetane compound with an oxetane ring and an epoxy compound, and a non-reactive compound having a viscosity at 25&#xb0; C. of from 0.1 to 20 mPa&#xb7;s and a boiling point of not less than 150&#xb0; C.

Actinic ray curable composition, actinic ray curable ink, image formation method employing it, and ink-jet recording apparatus

An actinic ray curable composition is disclosed, comprising and oxetane ring-containing compound and an epoxy compound, in which the oxetane ring-containing compound comprises a compound containing a single oxetane ring and a compound containing at least two oxetane rings, and the compound containing a single oxetane ring accounting for 1% to 20% by weight if the composition. There are also disclosed an ink for use in ink jet printing and an image forming method by use thereof.

Actinic ray curable composition, and actinic ray curable ink and image forming method by use thereof

An image recording method includes: jetting light curable ink on a recording medium by a recording head of an inkjet type; irradiating light from a light source toward the recording medium; and curing the light curable ink to form an image, wherein at least one of light intensity of the light source and light curability of the light curable ink is adjusted so as to make viscosity increase rate of the light curable ink not less than 20% after the light source irradiates the light directly toward the light curable ink for a first predetermined time period; and light intensity at a jetted surface of the recording head is adjusted so as to make the viscosity increase rate of the light curable ink from 5% to 30% after light having the light intensity at the jetted surface is irradiated toward the light curable ink for a second predetermined time period.

Image recording method and image recording device

A method for forming an ink-jet image, comprising the steps of:

Image forming method, printed matter and image recording apparatus

There is described inkjet recording method and apparatus capable of printing very fine images stably on every type of printing material. The apparatus includes an ink-heating section to heat ink; an ink-jetting head having an ink channel, a volume of which is expanded and shrunken by applying a first electronic pulse and by successively applying a second electronic pulse, to emit an ink particle from a nozzle of the ink channel onto a recording medium so as to form the image on the recording medium; and an ultraviolet light irradiating section to irradiate ultraviolet light onto the recording medium for fixing the image; wherein, at a time after the ink particle is emitted by applying a first driving pulse to the ink channel and before an ink meniscus, formed at the nozzle, grows to an original stable state, a next ink particle is emitted by applying a second driving pulse.

Inkjet recording method and apparatus

An inkjet recording method having a step of ejecting an ink containing at least photo-polymerizing compound and a colorant from a nozzle of a recording head, which has a piezoelectric member, to form an image on a recording member. The inkjet recording method utilizes a piezoelectric function of the piezoelectric member, a diameter of the nozzle (R) is from 20 to 50 &#x3bc;m, and a length of the piezoelectric member in an ink ejecting direction (L) is from 2.0 to 5.0 mm.

Inkjet recording method

An ink-jet ink comprising a photopolymerizable compound, a photopolymerization initiator and a colorant, wherein the ink has a viscosity of 500 to 50,000 mPa&middot;s at 25&deg; C. and a viscosity of 3 to 30 mPa&middot;s at 80&deg; C.

Ink-jet ink, ink-jet cartridge, ink-jet recording unit and ink-jet recording apparatus

A silver halide photographic material is disclosed, comprising a support having on one side the support photographic component layers, wherein at least one of the component layers contains a composite polymeric material comprising inorganic particles and a hydrophobic polymer, a silver halide emulsion layer comprising a silver halide emulsion containing silver halide grains having an average chloride content of not less than 60 mol % and containing a metal dopant.

Silver halide photographic light sensitive material

A method of processing a silver halide photographic light-sensitive material by use of an automatic processor is disclosed, comprising the steps of developing an exposed photographic material with a developer, fixing with a fixer, washing and drying, wherein a swell ration of overall hydrophilic colloid layers including a silver halide emulsion layer and a protective layer provided on one side of a support is not more than 150%; and the developer, which contains substantially no dihydroxybenzene compound comprises a compound represented by the following formulas in combination with a 3-pyrazolidone compound or an aminophenol compound, and a carbonate salt in an amount of 0.35 mol/l or more.

Method of processing a silver halide photographic material

A silver halide photographic light-sensitive material is disclosed. The light-sensitive material comprises a support, and a silver halide emulsion layer and optionally a hydrophilic colloid layer provided on the support, in which the silver halide layer comprises a silver halide emulsion chemically sensitized in the presence of fine particles of a water-insoluble sulfur sensitizer which are added to the silver halide emulsion in a form of dispersion of solid particles.

Silver halide photographic light-sensitive material

A method for processing an imagewise exposed black-and-white negative silver halide photographic light-sensitive material comprising a support having provided thereon photographic layers including at least one silver halide emulsion layer, one of said photographic layers containing a hydrazine derivative, said method comprising;

Composition for developing a black-and-white silver halide photographic

A method of developing with developer an exposed black and white silver halide photographic light-sensitive material is disclosed, the developer containing a compound represented by the following Formula (1a) , (1b) , (2) or (3) and a compound represented by the following Formula (4) or (5): ##STR1##

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Hachioji, Japan

Wataru Ishikawa