Canon Kabushiki Kaisha

Fujitsu Corporation

Mitsubishi Jidosha Kogyo Kabushiki Kaisha

Seiji Okada

Toshiaki Narusawa

Hirofumi Okuyama

Teruo Yagishita

Kiyohide Muramatsu

Takashi Takahashi

Ryo Ogawa

Norio Sawatari

Shintetsu Go

Isao Watanabe

Kazumasa Saito

Kyohei Wada

Hirohumi Okuyama

Provided is a photo-curable composition capable of creating a three-dimensional object excellent in both of: stiffness and strength; and toughness. Specifically, provided is a photo-curable composition including: a blocked isocyanate represented by the general formula (1); a chain extender; and a photo-radical generator: wherein, in the general formula (1), Ato Aeach independently represent a structure represented by the following general formula (2), and B represents a structure represented by the following general formula (3) 

Blocked isocyanate, photo-curable composition, resin, and method of manufacturing three-dimensional object

A three-dimensional-forming photo-curable composition includes a (meth)acrylic compound having a (meth)acryloyl group; a photo-radical generator; and a polyrotaxane having a plurality of cyclic molecules having at least one of a (meth)acryloyl group and a hydroxyl group.

Three-dimensional-forming photo-curable composition, method for producing three-dimensional article from the photo-curable composition, and resin

Conventional cross-linked cyclic olefin polymers do not have a sufficiently low linear expansion coefficient. A compound having a structure represented by the following formula (a). 

Compound, polymer, cross-linked compound of polymer, and optical element including cross-linked compound

There is provided a benzocyclobutene compound represented by Formula (1)  where n is an integer from 0 to 2, Rand Rare each independently selected from a hydrogen atom and a saturated hydrocarbon group having 1 to 5 carbon atoms, and A is selected from a direct bond and a substituted or unsubstituted chain saturated divalent hydrocarbon group having 1 to 20 carbon atoms.

Benzocyclobutene compound, organic-inorganic composite particle, cross-linked organic-inorganic composite particle, organic-inorganic composite composition, cross-linked organic-inorganic composite composition, and optical device utilizing the same

A method for producing organic-inorganic composite particles includes preparing a cyclic olefin monomer expressed by general formula (1) and inorganic particles coated with a compound having a carbon-carbon double bond, and binding at least one of the cyclic olefin monomer and a cyclic olefin polymer derived from the cyclic olefin monomer to the carbon-carbon double cong by bringing the cyclic olefin monomer into contact with the inorganic particles in the presence of a catalyst for ring opening metathesis polymerization of the cyclic olefin monomer: 

Methods for manufacturing organic-inorganic composite particles, optical material, optical element and lens, and organic-inorganic composite particles

An optical component and an electrical board that have a low coefficient of linear expansion and small mold shrinkage, a method for producing the optical component, and a method for producing the electronic board are provided. An optical component includes a polymer having a repeating structural unit represented by general formula (1) where Rand Reach independently represent &#x2014;H or &#x2014;CH; m and n each independently represent an integer in the range of 0 to 3; asterisk denotes a dangling bond that bonds to one of Xa and Xb; and &#x2014;H bonds to the other one of Xa and Xb.

Optical component, electronic board, method for producing the optical component, and method for producing the electronic board

A composition contains a cycloolefin polymer and a cross-linked structure of a cross-linkable polymer having a specific structure.

Composition, method for manufacturing the same, optical element, lens

Provided are fine particle dispersion liquid containing tantalum oxide fine particles each having a small crystallite size and uniformly dispersed in an organic solvent, a tantalum oxide fine particle-resin composite, and a method of producing the dispersion liquid. The method of producing a fine particle dispersion liquid containing tantalum oxide fine particles includes: preparing a mixture of the tantalum oxide fine particles, a basic compound, a surface modifier, and an organic solvent; and subjecting the mixture to a dispersion treatment.

Fine particle dispersion liquid containing tantalum oxide fine particles, tantalum oxide fine particle-resin composite, and method of producing fine particle dispersion liquid

A turbocharger control apparatus has an exhaust turbine including an exhaust gas introducing port having a variable nozzle which can vary a passage area of the port by adjusting its opening degree, an engine load detection device which detects a load of an internal combustion engine, an idling state detection device which detects an idling state of the engine, and a control device which adjusts the opening degree of the nozzle in a region equal to or greater than a predetermined opening degree when the load detection device detects the engine load, and which adjusts the opening degree of the nozzle in a region smaller than the predetermined opening degree when the load detection device detects the non-engine load and detects that the internal engine is in the idling state. A control method of a turbocharger with a variable nozzle, has a step which detects an idling state and a load state of an internal combustion engine, and a step which adjusts an opening degree of the nozzle in a region equal to or greater than a predetermined opening degree when the load state of the engine is detected, and which adjust the opening degree of the nozzle in a region smaller than the predetermined opening degree when the idling state and the non-load state of the engine is detected.

Turbocharger control apparatus and a control method of turbocharger with

An auxiliary brake system includes a turbocharger, including an exhaust turbine driven by exhaust gas supplied from an internal combustion engine, nozzle vanes disposed therearound at intervals for a vane-opening-degree adjustment, and an actuator for adjusting the vane opening degree; a compression-releasing engine brake unit for generating an engine brake force by discharging suction air compressed in a combustion chamber of the engine at the timing in the vicinity of compression top dead center; and an electronic control unit. This control unit actuates the engine brake unit when the engine is in a fuel-cut region, and rotates the nozzle vanes through an actuator so that the opening degree of each nozzle vane is smaller than that attained when the engine brake unit is disabled and meets an engine rotation speed. As a result, when the engine brake unit is in operation, the rotation speed of the turbine of the turbocharger increases within a range where the turbine rotation speed does not exceed a rotation speed limit, so that the supercharging degree in the turbocharger increases, whereby an engine brake action of the engine brake unit is enhanced to produce a required engine brake force, while improving the durability of the turbocharger.

Auxiliary brake system

In an engine-brake assisting system comprising a hydraulic pressure producing unit, an exhaust valve driving unit and a hydraulic circuit member which are constructed as discrete elements, the hydraulic pressure producing unit produces a desired hydraulic pressure by rotating a camshaft disposed on a cylinder head to drive an engine-brake assisting cam. The generated hydraulic pressure is then supplied to an exhaust cam of the exhaust valve driving unit, which causes exhaust valves to open and close at a timing different from a valve opening and closing timing during a normal operation, thereby giving the engine a large brake force. With this arrangement, the reduction of overall size of the system and consequent reduction of overall height of an engine can be achieved.

Engine-brake assisting system

A developing material for electrostatic images comprising (a) carrier particles comprising iron beads coated with a layer of butadiene polymer resin in which Fe.sub.3 O.sub.4 powder is dispersed, the volume ratio of the polymer resin to Fe.sub.3 O.sub.4 is from 1:2 to 4:1, and the butadiene polymer is cured by heating with an organic peroxide of from 0.5 to 5.0 parts by weight, based on the weight of the butadiene polymer, which comprises a homopolymer containing 1,2-polybutadiene units, or a homopolymer or copolymer of cyclized 1,4-cis-polybutadiene and (b) from 1% to 6% by weight, based on the weight of the carrier particles, of toner particles which comprise a bis-phenol A-epichlorohydrin type resin, carbon powder, a nigrosine dye, and either a styrene-n-butyl acrylate copolymer or a montan wax.

Developer comprising a carrier coated with Fe.sub.3 O.sub.4 dispersed in

A process for preparing a developer for electrostatic images comprising: (1) immersing carrier beads in an organic solution of a resin material comprising a 1,2-butadiene or cyclized cis-1,4-butadiene homopolymer, or a mixture of at least one of the homopolymers and a styrene butadiene copolymer; evaporating the organic solvent of the solution, drying the immersed beads, and curing the resin material by a rotary drying method, to form a resin coating on the carrier beads; (2) blending toner materials at a temperature sufficient to form a toner mass, the toner materials comprising: (a) a binder resin, (b) a colorant, and (c) a charge controlling agent; and (3) pulverizing the blended toner mass to form toner particles and mixing the obtained toner particles with the coated carrier in a predetermined ratio of the total surface area of the carrier to the total projection area of the toner particles.

Process for preparing electrostatic developer

A developer material for electrostatic images comprising a mixture of (1) a coated carrier and (2) a toner. (1) The carrier consists of core beads coated with a coating resin comprising a butadiene homopolymer of a molecular weight of from 10,000 to 100,000, for the butadiene homopolymer is 1,2-polybutadiene and/or cyclized cis-1,4-polybutadiene or a mixture of at least one of these homopolymers and a styrene/butadiene copolymer of a molecular weight of from 10,000 to 100,000, the mixture containing from 7.5 to 100% by weight, based on the weight of the mixture, of butadiene in polymerized form. (2) The toner comprises, based on the weight of the toner, (A) from 85 to 95% by weight of a binder resin comprising, based on the weight of the binder resin, from 50 to 100% by weight of an epoxy resin of a molecular weight of from 900 to 8,000 and from 0 to 50% by weight of a styrene/alkyl methacrylate copolymer, the alkyl group having from 1 to 4 carbon atoms, of a molecular weight of from 10,000 to 100,000; (B) a colorant comprising, based on the weight of the toner, from 0 to 10% by weight of fine carbon and from 0.5 to 8% by weight of a nigrosine dye, and; (C) from 0 to 8% by weight of a charge controlling agent, based on the weight of the toner, comprising a quaternary ammonium alkyl sulfonate, the alkyl group having from 4 to 20 carbon atoms, or di-(polyhydroxyethoxy ethyl) octadecyl amine, or a polyamine. The ratio of the total surface area of the coated carrier to the total projection area of the toner particles is in the range of from 1:0.5 to 1:2.0.

Developer materials for electrostatic images

A process for preparing a developer material for electrostatic images comprising a mixture of (1) a coated carrier and (2) a toner by a rotary drying method.

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Kawasaki, Japan

Seiji Okada