Fuji Photo Film Company, Limited

Shinkawa Ltd.

Misato Industries Co., Ltd.

Jfe Steel Corporation

Yasuo Nagashima

Mikihiko Kato

Yasushi Endo

Naoki Sekine

Motoki Nakazawa

Yasuyuki Yamada

Hiroshi Hashimoto

Masamichi Sato

Takashi Kubo

Haruo Soeda

Hitoshi Saito

Koichi Takahashi

Takashi Matsumoto

Ryuji Shirahata

Akira Kasuga

Toshio Kawamata

Katsuhiro Iwasaki

Yoshihito Hagiwara

Masaya Kojima

Toshihiko Matsuo

Nobuyuki Oyama

Katsushi Oseki

Shinji Kumamoto

Yasuhi Endo

Takahiro Tsuzuki

Hiroshi Tako

Hideki Kadoya

A wire bonding apparatus connecting a lead of a mounted member with an electrode of a semiconductor die through a wire comprises a capillary through which the wire is inserted, a shape acquisition part which acquires the shape of the lead to which the wire is connected, a calculating part which calculates an extending direction of a wire tail extending from the end of the capillary based on the shape of a lead to which the wire is connected next, and a cutting part which moves the capillary in the extending direction and cuts the wire to form the wire tail after the lead is connected with the electrode through the wire. Thus, in the wire bonding using wedge bonding, joining part tails () formed in continuation to a first bonding point can be prevented from coming into contact with each other.

Wire bonding apparatus

A vehicle outer mirror device includes a housing, a mirror main body, a mirror drive unit, and an imaging unit. The housing is attached to a door of a vehicle and includes an opening facing rear of the vehicle. The mirror main body is disposed in the opening of the housing and has a light reflection region reflecting light entering from outside of the housing and a light transmission region capable of transmitting the light to inside of the housing. The mirror drive unit is disposed inside the housing and adjusts an orientation of the mirror main body. The imaging unit is fixed inside the housing, images the rear of the vehicle through the light transmission region, and is disposed in a state in which an imaging optical axis is inclined toward the outside of the vehicle with respect to a reflection optical axis of the light reflection region.

Vehicle outer mirror device, vehicle outer mirror system, and method for controlling vehicle outer mirror device

Provided is a wire-bonding apparatus () including: a capillary () through which a wire () inserted; and a controller (). The controller () is configured to execute operations including: a disconnection operation, after the second bonding operation, of moving the capillary through which the wire is inserted within a horizontal plane vertical to an axial direction of the capillary while the wire is held in the clamped state, and thereby disconnecting the wire from the second bonding point; a preliminary bonding operation of feeding the wire from the second bonding point to a predetermined preliminary bonding point, and performing preliminary bonding at the preliminary bonding point; and a shaping operation, after the preliminary bonding operation, of shaping the wire projecting from a tip of the capillary into a predetermined flexed shape.

Wire-bonding apparatus and method of manufacturing semiconductor device

A semiconductor device includes a common wire that sequentially connects three or more pads; bonding portions at which a side surface of the wire is bonded to the pads; and looping portions looped from the bonding portions onto the other pads adjacent to the pads, the bonding portions and the looping portions are formed alternately. When the pads are recessed from the surface of semiconductor chips, the common wire is crushed to a thickness greater than the recess depth of the pads to be made into a flat shape. Thus, on the semiconductor device, wire connection is performed with a smaller bonding count while reducing damage to the semiconductor chips, and at the same time bonding is performed efficiently to the electrodes recessed from the surface of the semiconductor chips.

Method of manufacturing semiconductor device

Provided is a wire bonding apparatus capable of performing high-speed wedge wire bonding, the apparatus including: a bonding tool having a through hole and a pressing surface for pressing a wire; a clamper for holding the wire; and a control unit. The control unit includes: wire tail extension unit that moves the bonding tool, after wedge bonding of the wire to a first lead, upward and along a second straight line connecting a second pad and a second lead, and causes the wire to extend from the through hole in a direction along the second straight line from the second pad to the second lead; and tail cut unit that, after causing the wire tail to extend, cuts the wire tail by moving the bonding tool in the direction along the second straight line connecting the second pad and the second lead while the clamper is closed.

Wire bonding apparatus and bonding method

A flexible magnetic disk has a first magnetic layer formed on a first surface of a circular polymeric substrate by coating and drying a magnetic coating material. After the first magnetic layer is formed and dried, a second magnetic layer is formed on a second surface of the polymeric substrate by coating and drying the magnetic coating material. The second magnetic layer formed on the second surface is then calendered to form a magnetic recording surface. The resulting magnetic disk provides for an improved surface vibration during high-speed rotation of the disk, and provides very good head touch.

Method for producing a magnetic disk

In a magnetic disk pack comprising a protective casing rotatably accommodating a flexible magnetic disk thereinside and having a pair of aligned windows formed at corresponding positions respectively so that a magnetic head can be inserted into one of the windows to be brought into sliding contact with the magnetic disk under rotation thereby recording and reproducing picture information on and from the magnetic disk, an inclined surface making an angle with the free rotation plane of the magnetic disk is provided on an inner part of the marginal edge of at least one of the windows or on a member resiliently supported at that position thereby inducing a positive pressure or a negative pressure between the rotating magnetic disk and the inclined surface depending on the direction of rotation of the magnetic disk. Such a positive pressure or negative pressure is utilized to urge or attract the magnetic disk toward and onto the magnetic head so as to ensure satisfactory head touch. In a mangetic disk recording/reproducing apparatus in which magnetic heads are inserted into such a magnetic disk pack, and a magnetic disk is rotated in one direction and the other by a reversible spindle motor, an inclined surface making an angle with the free rotation plane of the magnetic disk is provided on each of control members inserted into the windows of the magnetic disk pack together with the magnetic heads so as to similarly ensure satisfactory head touch.

Magnetic disk pack and magnetic disk recording/reproducing apparatus

A magnetic disc having excellent running durability is disclosed, which comprises a non-magnetic support and a magnetic layer on the non-magnetic support, the layer being composed mainly of a ferromagnetic metal powder and a binder resin, wherein the ferromagnetic metal powder has a pH value of less than 7.0 and a specific surface area as determined by the BET method of at least 40 m.sup.2 /g, and the glass transition temperature of the magnetic layer is at least 75.degree. C.

Magnetic disc having a magnetic layer with a glass transition

A magnetic recording medium is disclosed, comprising a nonmagnetic support having thereon a magnetic layer comprising ferromagnetic metal particles and binder resins, in which 35 to 55% by weight of said binder resins are a polar group-containing vinyl chloride copolymer and 10 to 25% by weight of said binder resins are a polyurethane resin obtained by the reaction of a polyisocyanate with a polyester polyol that is a product of the reaction of at least one of an alicyclic dihydric alcohol and an aromatic dihydric alcohol with at least one of an alicyclic dicarboxylic acid and an aromatic dicarboxylic acid, said polyurethane resin containing a polar group selected from the group consisting of --SO.sub.3 M, --COOM, --PO.sub.3 M wherein M is an H, Na, or K atom, and --NH.sub.2 in an amount of from 0.03 to 2% by weight, the amount of said binder resin in the magnetic layer being from 15 to 30 parts by weight per 100 parts by weight of said ferromagnetic metal particles.

Magnetic recording medium comprising a vinyl chloride copolymer

A magnetic recording medium is disclosed, comprising a nonmagnetic support having thereon a magnetic layer comprising mainly ferromagnetic metal particles of a specific surface area and binder resins, wherein at least part of said binder resins is a cellulosic resin having in side chains of the molecules thereof a polar group which is a sulfonic acid group, a metal sulfonate group, a phosphoric acid group, or a metal phosphate group.

Floppy disk comprising a cellulosic resin with a polar group in a side

A magnetic disk comprising a nonmagnetic support having provided thereon a magnetic layer comprising a ferromagnetic metal powder and a binder resin, wherein the magnetic layer has a mechanical loss tangent, tan .delta., of from 8.times.10.sup.-3 to 6.times.10.sup.-2, measured at a frequency of 110 Hz and in a temperature range of from 20.degree. to 50.degree. C. with a temperature increase rate of 2 deg/min.

Magnetic disk having a magnetic layer comprising a binder and

A magnetic recording medium having on a non-magnetic support a magnetic layer mainly composed of a ferromagnetic metal powder and a binder resin is disclosed, wherein the specific surface area S (m.sup.2 /g) of the ferromagnetic metal powder is from 30 to 65 and the magnetic layer further contains a fatty acid ester in a content Y (% by weight) to the ferromagnetic metal powder of the range of 0.05S+5.5.ltoreq.Y.ltoreq.-0.2S+24 when the specific surface area S is from 30 to less than 50 and the range of 0.06S+4.7.ltoreq.Y.ltoreq.-0.13S+21 when the specific surface area S is from 50 to 65. The magnetic recording medium is suitable for high density recording and exhibits excellent running durability.

Magnetic recording medium containing ferromagnetic metal powder and a

A magnetic sheet polishing device including a scraper having a sliding surface and a downstream side surface that is nearly perpendicular or at an acute angle to the sliding surface to ensure that magnetic material powder spontaneously falls away from and does not adhere again to the magnetic material surface of the magnetic sheet after being scraped off by the scraper. Additionally, the scraper has a diagonal groove or a diagonal step formed in a side surface to check for wear of the sliding surface.

Magnetic sheet polishing device

A magnetic recording/reproduction apparatus using a magnetic head in sliding contact with a flexible magnetic disk for recording and reproduction, which has a negative pressure generating member disposed at the upstream side of the magnetic head and at the same side of the magnetic head with respect to the flexible magnetic disk, having an inclined surface inclined to be farther from the flexible magnetic disk towards the downstream side, and a positive pressure generating member disposed at the downstream side of the magnetic head and at the opposite side of the magnetic head with respect to the flexible magnetic disk, having an inclined surface inclined to be closer to the flexible magnetic disk towards the downstream side, the rotating flexible magnetic disk being attracted by the negative pressure and urged by the possible pressure to achieve stable sliding contact with the magnetic head.

Growing community of inventors

Tokyo, Japan

Yasuo Nagashima