Patents by Inventor Norimoto Nouchi
Norimoto Nouchi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6076932Abstract: This invention provides a light absorber which can be used for optical equipment like optical-disk equipment and a liquid crystal display. The light absorber has a layered structure including a light absorbing layer and a transparent layer. The light absorbing layer absorbs a reflected light from the inside of the absorber as well as incident light into the absorber while the transparent layer helps attenuate the reflected light by interference of light. One of the light absorbing layers which is thicker than others may work as a shading layer for the incident light.Type: GrantFiled: September 22, 1997Date of Patent: June 20, 2000Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Shinji Uchida, Tsuguhiro Korenaga, Hiroyasu Tsuji, Shougo Nasu, Norimoto Nouchi, Toshio Fukazawa, Toshihiro Kuriyama, Yuji Matsuda
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Patent number: 6069776Abstract: A head cleaner for a magnetic recording and/or reproducing apparatus for cleaning rotary magnetic heads. The head cleaner includes a rotary spindle rotatably mounted on a support arm movable between an operative position, in which the head cleaner is in position to clean the magnetic heads, and an inoperative position separated from the magnetic heads. The head cleaner also includes a plurality of oblong webs of non-woven fabric with or without an abrasive material coated on one surface thereof. The oblong webs of non-woven fabric are fixedly secured to the rotary spindle so as to extend radially outwardly therefrom while being spaced an equal distance from each other in a direction circumferentially thereof.Type: GrantFiled: May 11, 1999Date of Patent: May 30, 2000Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kenji Hasegawa, Yoshiaki Mizoh, Norimoto Nouchi, Masaya Sakaguchi, Keizou Miyata, Tetsuo Fuchi
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Patent number: 5973892Abstract: A head cleaner for a magnetic recording and/or reproducing apparatus for cleaning rotary magnetic heads. The head cleaner includes a rotary spindle rotatably mounted on a support arm movable between an operative position, in which the head cleaner is in position to clean the magnetic heads, and an inoperative position separated from the magnetic heads. The head cleaner also includes a plurality of oblong webs of non-woven fabric with or without an abrasive material coated on one surface thereof. The oblong webs of non-woven fabric are fixedly secured to the rotary spindle so as to extend radially outwardly therefrom while being spaced an equal distance from each other in a direction circumferentially thereof.Type: GrantFiled: April 19, 1996Date of Patent: October 26, 1999Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kenji Hasegawa, Yoshiaki Mizoh, Norimoto Nouchi, Masaya Sakaguchi, Keizou Miyata, Tetsuo Fuchi
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Patent number: 5943195Abstract: A metal-in-gap type magnetic head apparatus in which a pair of magnetic core half bodies, comprising a metallic magnetic film containing Fe as a main component on at least one magnetic core half body, are joined. In the above mentioned structure, at least a part of the surface of a supporting base of the magnetic head comprises a material having a lower standard electrode potential than the metallic magnetic film and thereby the metallic magnetic film has a high saturation flux density. Moreover, a magnetic head apparatus and magnetic recording apparatus of the present invention can have a high reliability even in the strong corrosive environment.Type: GrantFiled: March 27, 1997Date of Patent: August 24, 1999Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Akinaga Natsui, Norimoto Nouchi
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Patent number: 5729398Abstract: A head cleaning device for use in a magnetic recording and reproducing apparatus comprises a cleaning roller in which a lubricant with an excellent lubricating action under low humidity conditions impregnates the soft material. This lubricant compensates for the drop in the natural lubricating action resulting from a moisture deficiency, and therefore prevents the production of seized deposits. Furthermore, the head cleaning device comprises a first cleaning portion impregnated with polymer resin and abrasive particles, and a second cleaning portion comprising only a soft material, the second cleaning portion can remove by wiping any abrasive particles or deposits left on the magnetic head surface immediately after the abrasive cleaning action of the first cleaning member.Type: GrantFiled: December 12, 1996Date of Patent: March 17, 1998Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Norimoto Nouchi, Masaya Sakaguchi, Hiroshi Yoda, Yoshiaki Mizoh
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Patent number: 5602705Abstract: A head cleaning device for use in a magnetic recording and reproducing apparatus comprises a cleaning roller in which a lubricant with an excellent lubricating action under low humidity conditions impregnates the soft material. This lubricant compensates for the drop in the natural lubricating action resulting from a moisture deficiency, and therefore prevents the production of seized deposits. Furthermore, the head cleaning device comprises a first cleaning portion impregnated with polymer resin and abrasive particles, and a second cleaning portion comprising only a soft material, the second cleaning portion can remove by wiping any abrasive particles or deposits left on the magnetic head surface immediately after the abrasive cleaning action of the first cleaning member.Type: GrantFiled: April 5, 1995Date of Patent: February 11, 1997Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Norimoto Nouchi, Masaya Sakaguchi, Hiroshi Yoda, Yoshiaki Mizoh
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Patent number: 5543179Abstract: A head cleaning device for use in a magnetic recording and reproducing apparatus comprises a cleaning roller in which a lubricant with an excellent lubricating action under low humidity conditions impregnates the soft material. This lubricant compensates for the drop in the natural lubricating action resulting from a moisture deficiency, and therefore prevents the production of seized deposits. Furthermore, the head cleaning device comprises a first cleaning portion impregnated with polymer resin and abrasive particles, and a second cleaning portion comprising only a soft material, the second cleaning portion can remove by wiping any abrasive particles or deposits left on the magnetic head surface immediately after the abrasive action of the first cleaning member.Type: GrantFiled: June 7, 1995Date of Patent: August 6, 1996Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Norimoto Nouchi, Masaya Sakaguchi, Hiroshi Yoda, Yoshiaki Mizoh
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Patent number: 5453893Abstract: A head cleaning device for use in a magnetic recording and reproducing apparatus comprises a cleaning roller in which a lubricant with an excellent lubricating action under low humidity conditions impregnates the soft material. This lubricant compensates for the drop in the natural lubricating action resulting from a moisture deficiency, and therefore prevents the production of seized deposits. Furthermore, the head cleaning device comprises a first cleaning portion impregnated with polymer resin and abrasive particles, and a second cleaning portion comprising only a soft material, the second cleaning portion can remove by wiping any abrasive particles or deposits left on the magnetic head surface immediately after the abrasive cleaning action of the first cleaning member.Type: GrantFiled: June 14, 1993Date of Patent: September 26, 1995Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Norimoto Nouchi, Masaya Sakaguchi, Hiroshi Yoda, Yoshiaki Mizoh
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Patent number: 5327315Abstract: In order to prevent the staining of magnetic heads of a magnetic recorder in a low humidity environment, a refrigeration device which refrigerates a magnetic tape is positioned so as to engage the magnetic tape prior to the tape engaging the magnetic heads. The refrigeration device comprises either a refrigeration post or a refrigerated semi-closed space and functions to transfer water to the magnetic tape.Type: GrantFiled: September 1, 1992Date of Patent: July 5, 1994Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Norimoto Nouchi, Yoshiaki Mizoh, Hiroshi Yoda, Masaya Sakaguchi
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Patent number: 5186977Abstract: In a method for manufacturing a functional thin film by a vacuum evaporation method, during a thin film containing a material is evaporation-deposited on a substrate, a gas flow controls orientation of the material in a manner that the gas flow substantially intersects direction of flow of vapor of said material onto the substrate.Type: GrantFiled: April 22, 1991Date of Patent: February 16, 1993Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yoshiharu Maezawa, Norimoto Nouchi
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Patent number: 4645703Abstract: A magnetic recording medium comprises steep mountain-shaped protrusions having heights ranging 50-600 .ANG. and distributed at a rate of 1.times.50.sup.5 -1.times.10.sup.8 protrusions/mm.sup.2 on a surface of ferromagnetic metal layer and further thereon a lubricant layer; the magnetic recording medium is suitable for VTR tape which has a satisfactory durability for repeated use and eliminates head clogging and squealing.Type: GrantFiled: October 10, 1985Date of Patent: February 24, 1987Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Takashi Suzuki, Kunio Hibino, Mikio Murai, Shigeki Kawase, Koichi Shinohara, Norimoto Nouchi
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Patent number: 4422117Abstract: A thin film magnetic head has a substrate with thin film layers deposited thereon and a protector layer bonded by a bonding layer to the substrate, with the thin film layers interposed therebetween. The thin film layers includes components of an electromagnetic transducing means. The bonding layer is a glass having a working temperature at which a magnetic layer included in the thin film layers does not have the magnetic characteristics deteriorated to any substantial degree.The fusing of the glass for making the bonding layer is performed at a temperature below 450.degree. C.Type: GrantFiled: April 16, 1981Date of Patent: December 20, 1983Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Noboru Nomura, Kenji Kanai, Nobuyuki Kaminaka, Norimoto Nouchi
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Patent number: 4409632Abstract: A magnetic head arrangement includes a spiral coil made of a thin layer and having a central opening. The spiral coil is deposited on a first layer of magnetic material in an electrically insulated manner. The arrangement further includes a second layer of magnetic material having a width wider than that of the central opening of the spiral coil and deposited on the spiral coil in an electrically insulated manner. A portion of the second layer located in the central opening of the spiral coil is magnetically connected with the first layer and another portion of the second layer located outside the spiral coil is held above the first layer to form a predetermined gap.Type: GrantFiled: November 19, 1980Date of Patent: October 11, 1983Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kenji Kanai, Nobuyuki Kaminaka, Norimoto Nouchi, Noboru Nomura
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Patent number: 4394699Abstract: A thin-film magnetic head employing a magneto-resistive element (MR element), which comprises a substrate, a layer of MR element deposited on said substrate and a conductor layer for supplying said MR element with an electric current in the longitudinal direction thereof. The substrate has at least two crystal axes in the plane parallel to the surface on which said magnetoresistive element is disposed. The respective coefficients of thermal expansion in the directions of said two crystal axes are different from each other.Type: GrantFiled: February 20, 1981Date of Patent: July 19, 1983Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Nobuyuki Kaminaka, Kenji Kanai, Norimoto Nouchi, Noboru Nomura
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Patent number: 4362767Abstract: A magnetic thin film is composed of an oxide of Fe.sub.x Co.sub.y Cu.sub.z having spinel structure wherein x, y and z represent respective atomic ratios, x+y+z=1, 0.50.ltoreq.x<0.95, 0.05<y.ltoreq.0.30 and 0.ltoreq.z<0.20. Such film exhibits high coercive force and good squareness.The film is made by vapor depositing a material containing at least one of Fe.sub.x Co.sub.y Cu.sub.z alloys and oxides thereof onto a substrate held at a temperature between 200.degree. and 500.degree. C. under an oxygen atmosphere with the pressure of above 10.sup.-4 Torr but below 10.sup.-3 Torr.Type: GrantFiled: November 21, 1979Date of Patent: December 7, 1982Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Norimoto Nouchi, Kenji Kanai, Nobuyuki Kaminaka, Noboru Nomura
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Patent number: 4354212Abstract: A magnetic head and a production method therefore in which permanent magnet films for applying a DC bias magnetic field Hd h to a magnetoresistive effect element film (MR element film) is arranged on both sides of the thickness dimension of the MR element film through at least a non-magnetic film therebetween. In making the MR element film thicker in order to reduce distortion, the DC bias magnetic field Hd b to be applied to the MR element film is also required to be increased. Unlike the prior art in which the above-mentioned requirement is met by increasing the thickness of the permanent magnet film under the thickness of the MR element film resulting in the problem of breakage of a film member above or under the thickness of the permanent magnet film, the invention further comprises a second permanent magnet film above the thickness of the MR element film without increasing the thickness of the first permanent magnet film.Type: GrantFiled: July 8, 1980Date of Patent: October 12, 1982Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Norimoto Nouchi, Kenji Kanai, Nobuyuki Kaminaka, Noboru Nomura
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Patent number: 4353102Abstract: A thin-film magnetic head constructed in the manner that a magnetic circuit is composed of a base of magnetic material and a thin-film magnetic core layer, which form an operating gap at the front end thereof and a rear junction at the rear end of the magnetic core layer, and a conductor layer forming a winding is provided between the base and the magnetic core layer. The magnetic core layer has a larger width at the portion where it crosses over the conductor layer, than at the operating gap portion, whereby magnetic fluxes generated by electric current flowing through the conductor layer are effectively passed through the magnetic core layer and so recording efficiency is improved.Type: GrantFiled: July 3, 1980Date of Patent: October 5, 1982Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kenji Kanai, Nobuyuki Kaminaka, Noboru Nomura, Norimoto Nouchi
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Patent number: 4318148Abstract: A thin-film magnetic head constructed by depositing a conductor layer formed in a spiral pattern having two or more turns on a magnetic substrate. A non-magnetic insulating layer is then formed to fill the spaces between turns of the conductive layer in such a manner that the thickness of the non-magnetic layer is substantially the same as that of the conductor layer. A further non-magnetic insulating layer and a magnetic layer are formed successively on the non-magnetic layer. A gap is formed on one side of the lamination between the magnetic layer and the magnetic substrate interposing the further non-magnetic insulating layer. A magnetic circuit through the magnetic layer and the magnetic substrate around the conductive layer includes therein the gap.Type: GrantFiled: July 1, 1980Date of Patent: March 2, 1982Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Nobuyuki Kaminaka, Kenji Kanai, Norimoto Nouchi, Noboru Nomura
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Patent number: 4246620Abstract: A thin film magnetic head having a contact surface which, when such magnetic head is in use, slidingly contacts a magnetic information carrier, such as a magnetic tape, drum or disc, for the information recording or reproduction. The magnetic head comprises a support substrate on which a thin magnetic layer and a non-magnetic layer are deposited in side-by-side relation to each other. The non-magnetic insulating layer has a wear resistance equal to or higher than that of the thin magnetic layer. A method for the manufacture of the thin film magnetic head is also disclosed.Type: GrantFiled: January 31, 1979Date of Patent: January 20, 1981Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Nobuyuki Kaminaka, Kenji Kanai, Norimoto Nouchi, Noboru Nomura
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Patent number: 4241367Abstract: This invention provides a thin film magnetic head composed of at least one conductive body layer formed in a magnetic material substrate with grooves therein, each groove being filled with a non-magnetic material, an insulating layer formed on the face of the magnetic material substrate including the conductive body layers, and a magnetic material layer formed on the insulating body layer. To precisely form the groove, an electrolytic etching process of the substrate and an annealing process of the substrate surface layer are combined to provide an straight-line property of the groove and the groove section, circular in arc, with better reproducibility.Type: GrantFiled: March 5, 1979Date of Patent: December 23, 1980Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Noboru Nomura, Kenji Kanai, Nobuyuki Kaminaka, Norimoto Nouchi