Hitachi, Ltd.

Hitachi Chemical Company, Ltd.

Research Institute of Industrial Science & Technology

Pohang Iron & Steel Co. Ltd.

Fuminori Ishikawa

Takao Funamoto

Yutaka Ito

Masatoshi Wakagi

Tadashi Nishino

Takayuki Nakakawaji

Masanobu Hanazono

Kunihiro Tamahashi

Shigeki Komatsuzaki

Mitsuyoshi Shoji

Takashi Mashiko

Takeshi Sakai

Toshiyuki Kajiwara

Yoshio Takakura

Yoshimi Mori

Mitsuo Nihei

Kenichi Yasuda

Yasuhiko Kimura

Masahiko Honma

Hironori Shimogama

Shigeharu Onuma

Gen Nagakubo

Yusutsugu Yoshimura

Hideaki Tanaka

Yasutsugu Yoshimura

Kenji Horii

Akira Sato

Shin Onose

Katsumi Tamura

Motoo Akagi

Kenjiro Narita

Katsuyoshi Terakado

Youichi Inomata

Hiroshi Yashiki

Toshimi Matsumoto

Kenichi Gomi

Yasumasa Tamai

Akira Onuma

Tsutomu Onuma

Masaaki Imamura

Mitsuo Nakamura

Chiaki Yamagishi

Yoshihiro Moriguchi

Takashi Kamoshita

Jung-Sik Lee

Jong-Sub Lee

Masaki Okamura

Jong-Keun Kim

Yasuo Shimamura

Masayuki Kurihara

Hiroo Koide

Masamichi Kase

Choichi Asano

Takayoshi Tomino

Chiaki Yamabishi

Ki-Chol Kim

Hwang-Kyu Hwang

Jin-Hee Kim

Hiroko Saito

Toshinori Hirano

When electric wires (joint conductors) are disposed adjacent each other in a peeled state of coatings, a gap corresponding to the total thickness of both conductors' insulating films as skin layers is formed between end joined face portions of the conductors. The gap becomes larger because the conductors are tapered. Therefore, the adhesion between both conductors is impaired, with a consequent fear of occurrence of joining imperfection. In opposed joined face portions of electric wires (joint conductors), the conductors are deformed from the tips of their axes to the joined face side in such a manner that exposed portions at the tips of the conductors and insulating film faces located in the vicinity thereof are flush with each other or the exposed portions are projected. The gap formed between the electric wires (joint conductors) can be diminished, whereby the reliability of connection is improved and it becomes easier to perform the work of joint conductors, with the result that the productivity of a stator of a rotary electric machine such as an AC generator for a vehicle could be improved.

Joint structure of electric wire, stator of rotary electric machine, method for manufacturing the same

A connecting structure in which the electric cable having an insulated coating and the electrically conductive member with non-insulated coating are connected through a connecting terminal having a junction support member by applying an electric current, heating and applying a pressure; and the electric cables having an insulated coating and are connected mutually to one another through a connecting terminal having an electrically conductive member with non-insulated coating and a junction support member by applying an electric current, heating and applying a pressure, and a connecting method in which those connections are established by applying an electric current, applying a heat and applying a pressure, and a rotating electric machinery having that connecting structure and an alternating current generator using this machinery.

Connecting structure and its connecting method, and rotating machinery and alternating current

An upper shearing blade equipped with a protrusion of a triangle-columnar shape and a lower shearing blade equipped with a protrusion of the same shape are applied onto the overlapped portion of metal plates to be bonded, and then pressed into the metal plates in an oblique direction inclined with respect to the thickness direction by a stroke in such a range that the metal plates are not completely cut off. The operating loci of the upper, shearing blade and the lower shearing blade are overlapped each other so that one falls inside the other, and the sheared surfaces of the metal plates are formed into a bonded portion by plastic flow deformation. Therein, since a compressive force is applied onto the portions to be bonded, the portion being defined by the amount of overlap, and the portions are compressed to form a compressed portion after completion of bonding, the bonding strength enhances. Besides, since the protrusions on the shearing blades generate a pressing force pressing the sheared surfaces onto each other, by an effect of their inclined surfaces, a compression force applied onto the bonded portion further increases.

Method of bonding metal plates, apparatus therefor and hot strip mill

A bonding apparatus for bonding metal plates, includes an overlapping mechanism for overlapping end portions of the metal plates, at least two supports for supporting the overlapped portion of the metal plates at one side of the metal plates, and a shearing blade disposed opposite the supports so as to sandwich the overlapped portion of the metal plates therebetween, wherein a moving mechanism is provided for relatively moving at least one of the shearing blade and the supports so as to press the shearing blade into the overlapped portion of the metal plates disposed between the supports and the shearing glade. A method for bonding is characterized by bonding metal plates by using the above apparatus.

A submerged laser beam irradiation equipment provides a high quality submerged laser beam processing of a submerged workpiece using only a small amount of a gas. The submerged laser beam irradiation equipment has: a focus lens for focusing a laser beam; a mirror tube which houses the lens; a first nozzle operating to cover the front end of the mirror tube in an irradiating direction of the laser beam; a skirt portion provided at the front end of the first nozzle for preventing water intrusion thereinto; and a shutter mechanism operable to open and close and provided between said skirt portion and said mirror tube for preventing water intrusion into said mirror tube.

Submerged laser beam irradiation equipment

A bonding apparatus for bonding metal plates, includes an overlapping mechanism for overlapping end portions of the metal plates, at least two supports for supporting the overlapped portion of the metal plates at one side of the metal plates, and a shearing blade disposed opposite the supports so as to sandwich the overlapped portion of the metal plates therebetween, wherein a mechanism is provided for moving relatively moving at least one of the shearing blade and the supports so as to press the shearing blade into the overlapped portion of the metal plates disposed between the supports and the shearing blade. A method for bonding is characterized by bonding metal plates by using the above apparatus.

This invention relates to the magnetic recording medium, its manufacturing method and the magnetic disk apparatus, in which the ferromagnetic thin film is formed on the substrate board, and the protective layer is provided on that. A Magnetic recording medium of the has at least one layer of the protective layer on the magnetic surface, which is characterized in that the surface of the protective layer is provided with the high noncontinuous large resistance layer, and the density of the surface of the protective layer is higher than other regions other than the said surface. The magnetic recording medium has the surface of the protective layer which contains at least one kind or more of the element of the inert gas element, the halogen element and hydrogen. Therefore, when making a lower flying height of the magnetic head is achieved, the slide durability over the long term is improved, particularly, the slide durability of the magnetic disk apparatus using the MR head can be improved.

Magnetic recording medium comprising a protective layer having specified

An electrophotographic photoreceptor comprising a photoconductive layer comprising a photoconductor, a support for the photoconductive layer and a surface layer formed on the photoconductive layer and comprising a curable resin film and an inorganic insulator pieces having a size larger than the film thickness of the curable resin film. In order to prevent the image blurring of an a-Si:H photoreceptor, on the outermost surface of the photoreceptor was formed a surface layer having a structure in which inorganic insulator pieces have protruded from the curable resin film. Since the curable resin is of high resistance and shows no quality change by corona irradiation, and besides the protruding inorganic insulator pieces prevent the abrasion of the resin, the surface layer having a long life and excellent humidity resistance, durability for corona irradiation and abrasion resistance can be realized. Further, by covering the surface layer with a fluorine-containing lubricant, the surface layer having a low friction coefficient and excellent cleaning characteristics is obtained, and besides the resin constituting the surface layer absorbs little moisture. As a result, it becomes possible to use the a-Si:H photoreceptors without a heater. Also, the surface layer of the present invention can be removed and then re-formed.

Electrophotographic photoreceptor with protruding inorganic insulator

An electrophotographic photosensitive element, e.g. for a photocopier or laser printer, comprises a substrate and a plurality of layers on the substrate including a photoconductive layer of a-Si:H and a protective and lubricating layer which is outermost from said substrate. To provide wear resistance and long life-time of the protective and lubricating layer, this layer comprises a microporous solid material having a pore structure which extends substantially over the whole thickness of the material and a hydrophobic lubricant carried by said solid material. The lubricant includes a liquid film and often times a non-particulate solid film, and provides at least part of the outer surface of the element and is present also in the pores of said microporous solid material.

Electrophotographic photosensitive element comprising a protective layer

An electrophotographic member comprising a support, a photoconductive layer formed thereon, and a surface layer formed thereon, said surface layer including or attaching a lubricating agent having a perfluoropolyoxyalkyl or perfluoropolyoxyalkylene group to form an organic surface protective lubricating layer, and a fixing group to be fixed to the surface layer, is excellent in moisture resistance, wear resistance and cleaning properties and thus useful in an electrophotographic apparatus with a long life and high reliability.

Electrophotographic member containing a fluorine-containing lubricating

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Hitachiota, Japan

Fuminori Ishikawa