Abstract: As an antiferromagnetic layer achieving exchange anisotropic coupling with a ferromagnetic layer, any Mn alloy of Ru-Mn, Rh-Mn, Ir-Mn, Pd-Mn, and Pt-Mn alloys is used. The content of each element is 10 to 45 atomic % for Ru, 10 to 40 atomic % for Rh, 10 to 40 atomic % for Ir, 10 to 25 atomic % for Pd, and 10 to 25 atomic % for Pt, respectively. Since the alloy exhibits excellent corrosion resistance and exchange anisotropic magnetic field in spite of its irregular crystal structure, no high temperature treatment is required in order to achieve a change in the crystal structure. The alloy is durable to high temperature due to a decreased change in the exchange anisotropic magnetic field.
Abstract: An optical disk unit wherein a disk rotating speed is automatically adjusted for reading optical information from various optical disk types, each optical disk type requiring a different rotating speed. The optical disk unit moves an optical head to a track corresponding to a program start position, then moves the optical head to a second track which is a predetermined distance from the first track. The program time information is then read from the second track and compared with preset values. When the program time information is less than a first preset value, the optical disk unit rotates the disk at a slow speed (for example, such that a linear speed of the optical head is 1.2 m/s relative to the disk). When the program time information is less than the first preset value and greater than a second preset value, the optical disk unit rotates the disk at an intermediate speed (for example, 1.3 m/s).
Abstract: A giant magnetoresistive material film includes at least two ferromagnetic layers of a NiFe alloy or NiFeCo alloy, which are formed on a substrate through a nonmagnetic layer of Au, Ag, Cu or Cr, wherein magnetization of at lest one of the ferromagnetic layers is pinned by a coercive force increasing layer of .alpha.-Fe.sub.2 O.sub.3 provided adjacent thereto and having a thickness of 200 to 1000 .ANG. so as to increase coercive force of the ferromagnetic layer, and the other ferromagnetic layer has free magnetization so as to produce a change in resistance at a low magnetic field. The present invention also provides a method of producing the giant magnetoresistive material film and a magnetic head provided with the giant magnetoresistive material film.
Abstract: An antitheft security tag is used in combination with an article surveillance security system. The antitheft security tag comprises a tagging part to be tagged to an article, formed by looping a two-core cable having two insulated copper wires or the like, a connecting part formed out of a cable, to be connected to the article surveillance security system, a joining part for joining the tagging part to the connecting part, and a resistor contained in the joining part and connected in series to the wires of the two-core cable forming the tagging loop. One end of the connecting part to be connected to the article surveillance security system is provided with a connector to be connected to the article surveillance security system. The article surveillance security system monitors the resistance of the antitheft security tag for article surveillance and detects unauthorized tampering with the antitheft security tag through the detection of a change in the resistance of the antitheft security tag.
Abstract: A thermal transfer printer in which when a printing head is soiled, the debris on the printing head can be removed automatically. The printing head movable to and from a platen is mounted on a carriage capable of being reciprocated along the platen, and a cleaning pad is disposed on an extension line of the platen downsteam or upstream in the printing column direction of the platen.
Abstract: A method of transferring recording data to a recording device for preventing the slowdown of effective recording speed by determining beforehand the available memory capacity of an input device and by transferring the recording data in an optimum manner to the recording device. The available memory capacity of an input device 1 is determined. When the available memory capacity of the input device 1 is sufficient enough to store the recording data of one cycle by the recording head, the recording data of one cycle is transferred to the recording device 2 on a recording cycle basis. When the available memory capacity of the input device 1 is not sufficient enough to store the recording data of one cycle by the recording head, the recording data is transferred to the recording device 2 on an element-by-element basis.
Abstract: An MR head includes a soft magnetic (SAL) layer, a nonmagnetic (SHUNT) layer, and a magnetoresistive (MR) layer, which are formed on top of each other, with shielding layers being formed on the upper and lower sides of these layers. The shielding layers, which are formed, for example, of an Fe-based fine crystalline material, are heated in a magnetic field, so that the magnetic permeability in the direction of the normal of the recording medium (the y-direction) of the shielding layers is higher than the magnetic permeability in the track-width direction (the x-direction) of the same, whereby it is possible to enhance the shielding effect of the shielding layers with respect to a leakage magnetic field from the recording medium. Further, due to the relatively low magnetic permeability in the x-direction of the shielding layers, a bias magnetic field imparted to the magnetoresistive layer from the hard bias layer is not easily drawn in the shielding layers.
Abstract: A rotary connector including a structure for connecting a flat cable to a lead block. The lead block includes a plurality of parallel joint conductors extending through a resin member. A pair of holding arms extend perpendicularly from the resin member. A window is formed in the resin member through which portions of the joint conductors are exposed, and a pair of projections are provided adjacent the window. The flat cable includes parallel conductors sandwiched by insulating films. A connecting portion of the insulating films is provided at a leading end of the flat cable, and alignment holes are formed in the connecting portion. Portions of the conductors are exposed between the flat cable and the connecting portion, and grooves are formed in sides of the flat cable adjacent the exposed conductor portions.
Abstract: A PC card connector has an injection mechanism which is improved so as to make it possible to push a PC card in a substantially straightforward direction, in which the PC card is withdrawn, without converting rotary motion into linear motion. The PC card connector is further improved so as to be able to assure the constant smooth withdrawal of the PC card without the need of a complicated or large-sized structure. The PC card connector is provided with a push rod which is pressed to remove the PC card, an eject lever which is supported by a first fulcrum in a pivotal manner, and which has one end engaged with the push rod and has a first claw at the other end to eject the PC card, and a rotary arm which is supported by a second fulcrum in a pivotal manner and has at one end a second claw to eject the PC card, and which has the other end connected to a predetermined location in the eject lever.
Abstract: A rotary connector including a first housing rotatably connected to a second housing and forming an annular space therebetween, and a flexible cable wound within the annular spacing. According to a first aspect, the conductors of the flexible cable associated with an airbag circuit are spaced further apart than conductors for other circuits mounted on a steering wheel. A direct connector includes first terminals connected to the airbag conductors and second terminals connected to the other conductors. The first and second terminals are spaced apart and/or divided by a divider to prevent interference during assembly. In accordance with the second aspect, a locking member for preventing relative rotation of the first and second housings prior to assembly on a vehicle includes a cover portion for covering an open end of the direct connector.
April 12, 1996
Date of Patent:
November 4, 1997
Alps Electric Co., Ltd.
Hironori Kato, Masanori Nakao, Yuichi Ida
Abstract: This invention provides a dot printer which reads a manuscript and prints on a recording medium automatically only by placing a manuscript and a recording medium. A thermal head and an image scanner are provided facing to a platen, a feeding mechanism for feeding a desired manuscript or recording medium between the platen, and the thermal head and the image scanner is provided, an identification marker is formed on the upstream side of feeding of the manuscript, and a controller for controlling the operation is provided so that the identification marker is read using the image scanner to recognize that the medium is a manuscript fed from the feeding mechanism, then, the image scanner starts to read the manuscript.
Abstract: A head feeding device includes a screw shaft having a thread groove formed with a predetermined pitch, a driver for turning the screw shaft, a head guided in the axial direction of the screw shaft by a shaft bearing sliding on a surface of the screw shaft, and an engagement member that engages in the thread groove of the screw shaft and converts the turning force of the screw shaft into the axial head moving force. A second groove for containing a lubricant is formed on the screw shaft having the same pitch as that of the thread groove. The second groove retains lubricant scraped out of the thread groove by the engagement member. Therefore, lubricant is reliably supplied to the sliding surfaces between the screw shaft and the shaft bearing, thereby eliminating problems caused by increased friction or seizure, and thereby improving the head feeding accuracy.
Abstract: The present invention provides a method of removing a photoresist film, which exhibits the high ability to remove photoresist and excellent safety and handling properties such as workability, In the removing method, the photoresist film is removed by chemical decomposition in an inorganic aqueous solution under ultraviolet-light irradiation. The inorganic aqueous solution is an aqueous solution of peroxomonosulfate or an aqueous solution containing 4.5 to 36 wt % of sulfuric acid and 0.05 to 0.8 wt % of hydrogen peroxide.
Abstract: An electronic device includes a disk selection and drive apparatus to select and drive a plurality of disks or other recording media. Cartridges, each housing a recording medium therein, are held in holding areas in a disk container. Support rods of a drive unit are supported by elongated support holes to be movable in the vertical direction. A first drive member and a second drive member, each having inclined guide portions and releasing portions for guiding the support rods, are provided. A rotary member has cams to drive the first and second drive members, respectively. The cams are grooves with arched portions. When a protrusion of the first or second drive members is confined and moved by the cams, the drive unit is positioned opposite a selected one of any of the holding areas. When the first drive member is moved through a predetermined distance in the horizontal direction, the drive unit is moved vertically to access some of the holding areas.
Abstract: A chucking device for receiving and rotating a magnetic disk, the magnetic disk having a centrally-located drive spindle receiving hole and an off-center alignment hole. The chucking device includes a turntable, a drive spindle centrally-located on the turntable, and a support plate including a drive pin and a contact wall. The contact wall is formed adjacent the drive pin and is used to rotate the magnetic disk by pressing against an inner wall of the alignment hole. The drive pin is made of a low friction material, such as synthetic resin, and extends above the contact wall such that when the magnetic disk is mounted on the disk chucking device, the drive pin slides easily against the hub until the drive pin and contact wall are received in the alignment hole.
Abstract: An operation inputting apparatus is disclosed by which, even if a load detection output remains after an operation of a stick type operation member is stopped by an operator, a load detection output which coincides with stopping of the operation of the stick type operation member can be obtained. A pressure detection sensor detects a load force applied to the stick type operation member upon operation of the stick type operation member, and a comparison circuit compares a load detection value obtained from the pressure detection sensor with a preset load value. A timer circuit adjusts a count value in response to a result of the comparison and detects the count value equal to zero to produce a zero detection output. A judgment level production section sets two judgment levels for presence or absence of an output in response to the zero detection output.