Bridgestone Corporation

Kazuya Murata

Gaku Yakushiji

Yoshitomo Masuda

Hajime Kitano

Takahiro Kawagoe

Koji Takagi

Norio Nihei

Norihiko Kaga

Toshiaki Arai

Takao Ohuchi

Taichi Kobayashi

Hiroyuki Anzai

Hirotaka Yamazaki

Hajime Tamura

Yoneji Kobayashi

Itsuo Tanuma

Kunio Machida

Yoshio Takizawa

Takayuki Maruyama

Seiichi Kato

Ryo Sakurai

Yoshinori Iwabuchi

Yoichi Nishimuro

Reiji Hattori

Ryou Sakurai

Maki Masutani

Kazuyoshi Akuzawa

Shohei Morikawa

Tomokatsu Ikuta

Masahiro Homma

Hare Tazawa

Kouji Takagi

The present invention relates to provision of a tire in which both high mechanical strength and excellent ozone crack resistance are made compatible with each other and a rubber composition capable of producing the tire. The rubber composition contains a rubber component including a diene-based rubber, a hydroquinone compound having one alkyl group having 4 to 6 carbon atoms, and an amine-based anti-aging agent.

Rubber composition and tire

As a rubber composition excellent in fatigue resistance and a method for producing the same, this disclosure provides a rubber composition containing a zinc oxide, wherein: a total volume of aggregates of the zinc oxide with a diameter of 20 &#x3bc;m or more is 0.008 or less in the rubber composition by volume fraction; and a method for producing the rubber composition, comprising: preparing a wet masterbatch by using a carbon black with a surface average acidic functional group amount (&#x3bc;eq/m) of 0.15 or more and less than 3.00, preferably 0.40 or more and less than 1.50; and compounding a zinc oxide with the wet masterbatch.

Rubber composition and method for producing same, crosslinked rubber composition, and tire

There are provided particles for display media capable of properly controlling change in an amount of charge by heating and an information display panel, by using the particles for display media capable of eliminating a display failure and reduction in contrast ratio. The present invention are particles for display media used for an information display panel, in which at least one kind of display media constituted as a group of particles including chargeable particles are sealed between two opposed substrates, at least one of two substrates being transparent, and in which the display media are made to move so as to display information, wherein two or more kinds of charge control agents (CCA) are contained in at least one kind of particles for display media, at least one kind of charge control agent is positively chargeable and at least one kind of charge control agent is negatively chargeable, the positively chargeable charge control agent is a salt comprising a compound containing a quaternary ammonium cation group and an anion and the negatively chargeable charge control agent is a salt comprising a complex anion comprising a salicylic acid derivative and a metal atom, and a cation.

Particles for display media and information display panel using same

Particles for display media are constructed as spherical resin fine particles, in which functional groups indicating positively-charging properties are existent on their surfaces, which are obtained by polymerizing monomer by utilizing initiator having functional groups indicating positively-charging properties produced by reacting organic alkyl sulfonates and both terminal ends of azo initiator having cationic functional group including nitrogen-containing heterocycle or nitrogen-containing fatty series, or, are constructed as spherical resin fine particles, in which functional group indicating charging properties or ionic properties are existent on their surfaces, which are obtained by polymerizing monomer by utilizing initiator having functional groups indicating charging properties or ionic properties at its both terminal ends.

Particles for display media and information display panel

The present invention provides particles for display media constituting the display media used for an information display panel, in which the display media are sealed between two substrates, at least one of two substrates being transparent, and, in which the display media, to which an electrostatic field is applied, are made to move so as to display information, comprising: the particles having a substantially spherical shape, which are made by polymerizing raw materials including monomers, which include (acrylic or methacrylic) resin-hydrocarbon resin copolymer in the particles, in which a part of or all of the monomers are a multifunctional monomer having a plurality of polymerization reactive groups in one molecule, and which have minute irregularities on their surface evenly. By such a construction, the particles for display media can obtain irregularities firmly fixed on their surface. Poor display can be solved by using the same.

Particle for display medium and information display panel utilizing the same

Each embodiment relates to an image display device which comprises an image display panel, in which two or more groups of particles having different colors and different charge characteristics are sealed between two substrates, at least one of two substrates being transparent, and, in which the particles, to which an electrostatic field produced by a pair of electrodes provided on one or both substrates is applied, are made to fly and move so as to display an image. Among them, in the first aspect of the invention, an image forming process for forming the image by applying an electric field pattern between the electrodes, the electric field pattern serving to fly particles A to the substrate at an image display side; and an image forming process for forming the image by applying an inversion (negative) electric field pattern with respect to the electric field pattern, the inversion electric field pattern serving to fly particles B having different colors and different charge characteristics with respect to those of the particles A to the substrate at an image display side; so that an image deleting process prior to forming the image to be displayed is eliminated.

Image display unit

In particles for image displaying used in an image display device, in which one or more kind of particles are sealed between opposed substrates, at least one substrate being transparent, and, in which the particles are made to fly and move so as to display an image, each particle has a micro-irregularity at its surface. Moreover, in an image display device, in which one or more kind of particles are sealed between opposed substrates, at least one substrate being transparent, and, in which the particles, to which an electrostatic field produced by two kinds of electrodes having different potentials is applied, are made to fly and move so as to display an image, use is made of each particle having a micro-irregularity at its surface.

Particle and device for image display

In the particles for display media constituting the display media used for an information display panel, in which the display media having optical reflectance and charge characteristics are sealed between two substrates, at least one substrate being transparent, and, in which the display media, to which an electrostatic field is applied, are made to move so as to display information such as an image, the particles for display media having a substantially circular shape produced by a suspension polymerization of particle materials including monomer, wherein a part of the monomer is a cross-linking monomer and an amount of the cross-linking monomer is not less than 10 parts by weight and less than 50 parts by weight. By using the particles mentioned above, it is possible to obtain high heat resistance and low drive voltage (drive electric field).

Particles for display media and information display panel using the particles

The present invention intends to provide particles for displaying images used in an image display device capable of displaying and eliminating repeatedly accompanied by flight and movement of particles utilizing Coulomb force, being superior in stability, particularly in repetition durability, memory characteristic stability, adaptability for temperature change, having capability of regulating charge amount, and accordingly, favorable images with sufficient contrast should be stably obtained. The present invention provides particles coated with a resin; specifying Span of particle diameter distribution, charge attenuation property, thermal change of the surface hardness, tensile break strength, Izod impact strength (with a notch), abrasion loss (Taber), tensile elastic modulus, flexural elastic modulus, or tear strength. The present invention also proposes about the structure of the particles.

Particles and device for displaying image

In the case of filling and setting the liquid powders or the particles in a plurality of cells formed by the partition walls on the substrate, the method includes the steps of: setting a nozzle at an upper portion of a container; setting the substrate, on which the partition walls are arranged, at a lower portion of the container; scattering the liquid powders or the particles dispersed in a gas from the nozzle arranged at the upper portion in the container; and filling the liquid powders or the particles in the cells on the substrate arranged at the lower portion in the container. After this filling, the method further includes: a filling step for filling a predetermined amount of the liquid powders or the particles in spaces constituting the image display cells isolated by the partition walls; a removing step for removing unnecessary liquid powders or unnecessary particles remaining on the partition walls in the filling step; a substrate stacking step for stacking the transparent substrate and the opposed substrate via the partition walls and applying a sealing agent at a peripheral portion of the substrate so as to make an atmosphere between the transparent substrate and the opposed substrate uniform; and an electrode adhering step for connecting a circuit for displaying the image to the electrode so as to form a module.

Method of manufacturing image display panel, method of manufacturing image display device, and image display device

In the particles for display media constituting the display media used for an information display panel, in which the display media are sealed between two substrates, at least one substrate being transparent, and, in which the display media, to which an electrostatic field is applied, are made to move so as to display information such as an image, the particles for display media, which are produced by crushing resin blocks and classifying them, are that Izot impact strength of the resin constituting the particles for display media (based on ASTM D256) is less than 4 kgf&#xb7;cm/cm and a deflection temperature under load of the resin constituting the particles for display media (base on ASTM D648) exceeds 100&#xb0; C.

In the image display device according to the first aspect of the invention, a liquid powder composed of a solid material stably floating as a dispersant in a gas and exhibiting a high fluidity in an aerosol state is sealed between opposed substrates, at least one substrate being transparent, and the liquid powder is moved. Moreover, in the image display device according to the second aspect of the invention, a porous spacer is arranged between opposed substrates, at least one substrate being transparent, a liquid powder composed of a solid material stably floating as a dispersant in gas and exhibiting a high fluidity in an aerosol state is sealed, and the liquid powder is moved.

Image display device and method

An image display device, in which image display media are sealed between opposed substrates, at least one of two substrates being transparent, and in which the image display media, to which an electrostatic field is applied, are made to move so as to display an image. A construction of particles used as the image display media is improved (the first, second, fourth, fifth, sixth, eighth and ninth aspects of the invention), and a material of the particles used as the image display media is improved (the third, seventh and tenth aspects of the invention). Whiteness of the particles and a liquid powder using the particles is improved, particle agglutination is prevented, and the charge property is controlled. Moreover, durability is improved such that a contrast of the image display during a repetition display is not decreased. As a result, an excellent image display can be achieved.

Particle use for image display media, image display panel using the particles, and image display device

A reversible image display panel which comprises a pair of substrates one of which is transparent and a group of particles charged with single polarity, a group of particles with single color charged with single polarity, a group of particles having portions with different colors and different charge characteristics, or two groups of particles with different charge characteristics each enclosed between the substrates, characterized in applying an electric field across the substrates, and displaying images by flying and moving the particles. The reversible image display panel and the image display device in accordance with the invention have fast response speed and simple structure, being superior in stability and vividity. In an occasion of driving, generation of the strong electric field is unnecessary for them and accordingly, electric circuits can be assembled employing general purpose electronic materials.

Reversible image display sheet and image display

There is disclosed a rubber composition comprising (A) butadiene rubber and/or (B) isoprene rubber in the form of liquid and (C) silicone rubber at a &lcub;(A)&plus;(B)&rcub;/(C) ratio by weight in the range of 97/3 to 5/95. The composition is capable of affording an elastic member which has a low hardness and excellent wear resistance, and which is well suited for use in a variety of part items that are installed in an image formation apparatus such as an electrophotographic apparatus and an electrostatic recording apparatus, including copying machinery, printers, facsimile apparatus and the like, in particular a developing roller. There are also disclosed a developing roller which comprises the above rubber composition, is improved in wear resistance for a developer without causing high hardness thereof, and is capable of affording a steadily favorable image without fail for a long period of time; and further a developing apparatus which comprises the above developing roller.

Growing community of inventors

Hino, Japan

Kazuya Murata