MAGNETKOPF UND MAGNETKOPFVORRICHTUNG

Schwebende Magnetkopf-Anordnung

Recorder using magneto-optical disc

The recorder contains a rotating plate (1) and a head unit (5) with a magnetic head (6) whose head play is at a distance (d) from the surface of the plate. The head unit has electrodes (S1,S2) opposite the plate surface and connected to an arrangement (7) for measuring the capacitance (C).A control parameter (Uc) derived from the measured capacitance is used to control the separation distance of the head mirror and plate surface via a controller (8). The control parameter can regulate the position of the head unit w.r.t. the recorder's chassis.

KATADIOPTRISCHES OPTISCHES SYSTEM, OPTISCHER KOPF, OPTISCHES PLATTENLAUFWERK MIT DEM SYSTEM SOWIE OPTISCHE PLATTE

Galvano mirror unit with biassing member

A galvano mirror unit comprises a galvano mirror (26), a rotor (70) to which said galvano mirror is mounted, a stator (80) that rotatably supports said rotor about a rotation axis, first and second center pins (71, 72) provided to said stator, first and second receive meters (73, 74) provided to said rotor, which respectively receive said first and second center pins, and a biassing meter (82) provided to said stator which biases said first center pin to said first receive member thereby to eliminate backlash between said first center pin and said first receive member and between said second center pin and said second receive member.

Slider for optical disc data storage system

An optical disc data storage system (10) includes an optical disc (12) having a data surface. An actuator arm (24) having a distal end is selectively radially positionable adjacent the data surface. A transducing element (30) is carried on a slider (20) which is coupled to the distal end of the actuator arm (24). The slider (20) includes an air bearing surface (56) and the transducing element (30) includes an optical mesa (54) adjacent the air bearing surface (56). The optical mesa (54) is spaced apart from the data surface whereby contact between the data surface and the mesa structure (54) is prevented.

Optical system for optical disk drive

An optical system for an optical disk drive for reading/writing data from/in an optical disk includes a light source (7) emitting a parallel laser beam (P) to be incident on a deflector (26) having a mirror surface rotatable about an axis (01). The parallel laser beam is deflected towards an objective lens system (10) which faces an optical disk (2). A relay lens system (29, 30) is provided between the deflector and the objective lens system such that the mirror surface and a mirror side principal plane (S'1) of the objective lens system have a substantially conjugate relationship.

Galvano mirror unit with offset magnet on stator

A galvano mirror unit comprises a galvano mirror (26), a rotor (250) which said galvano mirror is mounted, a stator (260) that rotatably supports said rotor about a rotation axis, first and second center pins (251,252) provided to said stator, said first center pin (251) being made of a magnetized member, said first center pin being provided in a hole of said stator so that said first center pin is movable in the direction of said rotation axis, first and second receive members (253,254) provided to said rotor, said first and second receive members respectively receiving said first and second center pins, and an offset magnet (256) provided to said stator, said offset magnet attracting said first center pin in a predetermined direction thereby to prevent deviation of the inclination of said first center pin in said hole.

Galvano mirror unit

GLIDER SOLENOID ACTUATOR FUR MAGNETOOPTIC RECORDING

MANUFACTURING PROCESS OF A SOLENOID ACTUATOR WITH PLANAR COIL

GLIDER SOLENOID ACTUATOR FOR MAGNETOOPTIC RECORDING

MAGNETO-OPTICAL DEVICE

OPTICAL RECORDING MEDIUM, MAGNETOOPTIC RECORDING MEDIUM AND INFORMATION RECORDER/REPRODUCER

INTEGRATED MICRO-OPTICAL SYSTEMS

An integrated micro-optical system (61) includes at least two wafers with at least two optical elements (71, 73, 75, 77) provided on respective surfaces (50, 52, 54, 56, 58) of the at least two wafers. An active element (63) having a characteristic which changes in response to an applied field may be integrated on a bottom surface (67) of the wafers. The resulting optical system may present a high numerical aperture. Preferably, one of the optical elements is a refractive element formed in a material having a high index of refraction.

MAGNETIC HEAD APPARATUS AND METHOD OF MANUFACTURING THE SAME

A magnetic head apparatus for a magneto-optical recording medium recording and/or reproducing apparatus includes a head body and an arm-shaped support mechanism. The head body includes a magnetic head unit for generating perpendicular magnetic field, and a contact-slide portion to which the magnetic head unit is secured and which is slid along the magneto-optical recording medium in contact with the surface of the magneto-optical recording medium. The arm support mechanism to which the head body is secured is movable in such a direction that the magnetic head unit is contacted with or away from the magneto-optical recording medium.The arm-shaped support mechanism has an arm portion, a fixed portion and first and second elastic displacing portions. The head body is secured to one end side of the arm portion through the first elastic displacing portion. The fixed portion has one end secured to the fixed member and the other end which is linked to the other end of the arm portion through the ...

MAGNETO-OPTICAL RECORDING MEDIUM AND METHOD FOR PROCESSING THE SURFACE

MAGNETO-OPTICAL RECORDING DEVICE

RECORDING METHOD FOR MAGNETO-OPTIC MEMORY MEDIUM

A recording method for a magneto-optic memory medium of an exchange-coupled type having a recording layer with a low Curie point and a high coercive force and a reading layer with a high Curie point and a low coercive force, which comprises the steps of applying a magnetic field to the magneto-optic memory medium to develop predetermined data in the reading layer, and then applying both an optical beam and a magnetic field to the magneto-optic memory medium for writing the predetermined data in the recording layer. The data is simultaneously verified on the basis of a Kerr effect of the optical beam caused by the reading layer.

Magnetic head device and magneto-optical recording device

Cataldioptric lens, optical head and optical recording/reproducing apparatus

Magnetic head of writing for magneto-optical recording

La tête comprend un substrat en silicium (21) dans lequel est enterré un bobinage conducteur (22). Le bobinage (22) est en retrait par rapport au plan de vol (28) de la tête. Un circuit magnétique (24) peut compléter la tête. Application à l'enregistrement magnéto-optique.

Systeme de memorisation a lecture/ecriture optique et appareil pour lire et/ou ecrire sur un support souple des donnees pouvant etre detectees optiquement

L'invention concerne un systeme de memorisation par lecture/ecriture, destine a lire et ecrire des donnees, pouvant etre detectees optiquement, sur un support optique ou magneto-optique souple. Il comprend une tete de lecture/ecriture optique pouvant etre amenee par un bras 30 au-dessus d'un support souple sur lequel elle applique une lumiere focalisee et de laquelle elle recoit la lumiere reflechie. Les moyens de stabilisation fine sont places a proximite du support souple pour stabiliser ce dernier dans une position souhaitee afin qu'il ne soit pas necessaire a la tete optique de se rapprocher ou s'eloigner sensiblement du support pour maintenir la lumiere focalisee sur ce dernier. Domaine d'application : systemes de memorisation optiques d'informations, etc.

Optical reader/writer for optical, magnetic or magneto-optical data storage medium

L'invention concerne un dispositif d'inscriptionllecture optique d'un support d'informations. Ce dispositif comporte : - un substrat (2) transparent possédant une face sensiblement plane (20) portant au moins une paire d'électrodes (E1-E2) délimitant une aire d'entrefer (3) dont la dimension correspond sensiblement à la dimension de l'information à inscrire ou à lire. Une paire d'électrodes (E1-E2 ou E3-E4) constitue un résonateur pour une onde électromagnétique incidente ayant une composante de son champ électrique parallèle à la direction d'alignement des électrodes; - une source optique (1) éclaire lesdites électrodes à l'aide d'un faisceau optique (F1) dont une composante du champ électrique est parallèle à la direction d'alignement de la paire d'électrodes. Dans ces conditions, sous excitation du faisceau FI, lesélectrodes réémettront un faisceau qui présente une concentration de champ au niveau de l'entrefer (3). Ce faisceau réémis permet d'inscrire/ lire un support d'informations ...

HEAD ARRANGEMENT WITH IMPROVED FIELD CHARACTERISTIC FOR DOMAIN EXPANSION TECHNOLOGY

The present invention relates to a head arrangement for reading a magneto-optical recording medium (10) comprising a storage layer and a read-out layer. The head arrangement comprises an improved field generating means for generating a magnetic field used for copying a written mark from said storage layer to said read-out layer upon laser heating, the field generating means being arranged to generate a predetermined field gradient and/or a predetermined local maximum in a field component perpendicular to the surface of the recording medium (10). The width of the spatial overlap can thus be reduced such that an improved resolution and/or power marginis obtained.

POSITIVE PRESSURE OPTICAL SLIDER HAVING TRAILING END SIDE PADS

A disc head slider (250, 320) includes a slider body having a leading slider edge (40), a trailing slider edge (42) and a center line (48) extending from the leading slider edge (40) to the trailing slider edge (42). The slider body carries a recording head (56) along the center line (48). First and second longitudinal side rails (60, 62) are positioned on the slider body and terminate prior to the trailing slider edge (42). A third longitudinal rail (63) is positioned between the first and second longitudinal side rails (60, 62) and terminates prior to the head (56). A first raised side pad (252) is positioned between the first longitudinal side rail (60) and the trailing edge (42) and rearward of the head (56), relative to the leading slider edge (40). A second raised side pad (254) is positioned between the second longitudinal side rail (62) and the trailing edge (42) and rearward of the head (56), relative to the leading slider edge (40).

OPTICAL HEAD USING MICRO-MACHINED ELEMENTS

An optical head utilizes a micro-machined element in combination with a light source and a lens to write and read data onto a storage disk (107). The micro-machined element may include a steerable micro-machined mirror (400) or a micro-actuator (433). A beam of laser light (191) transmitted from the light source (231) to the optical head and a reflected light from the storage disk (107) is altered by a movement of the micro-machined element. A focused optical spot (448) is scanned back and forth in a direction (450) which is approximately parallel to the radial direction of the storage disk (107).

Optical pickup head of optical recording reproducing apparatus, fabrication method thereof, lubricant-coated optical pickup head of optical recording reproducing apparatus and lubricant coating method thereof

In an optical pickup head of an optical recording reproducing apparatus, a fabrication method thereof, a lubricant-coated optical pickup head of an optical recording reproducing apparatus and a method for coating lubricant onto an optical pickup head, by using a MEMS (micro electro mechanical system) technique used for designing, fabricating and application of a microstructure, it is possible to miniaturize an optical pickup head of an optical recording reproducing apparatus and reduce a fabrication cost thereof.

Offset optics for use with optical heads

An optical head is provided for transmission of light between a source of light and a storage location along an optical path that includes at least one offset optical element.

Magnetic head apparatus with resin portions sandwiching an elastic member to form elastic displacing portions and method of making the same

A magnetic head apparatus for a magneto-optical recording medium recording and/or reproducing apparatus includes a head body and an arm-shaped support mechanism. The head body includes a magnetic head unit for generating a perpendicular magnetic field, and a contact-slide portion to which the magnetic head unit is secured and which is slid along the magneto-optical recording medium in contact with the surface of the magneto-optical recording medium. The arm support mechanism to which the head body is secured is movable in such a direction that the magnetic head unit is contacted with or away from the magneto-optical recording medium. The arm-shaped support mechanism has an arm portion, a fixed portion and first and second elastic displacing portions. The head body is secured to one end side of the arm portion through the first elastic displacing portion. The fixed portion has one end secured to the fixed member and the other end portion has one end secured to the fixed member and the other ...

Optically assisted magnetic recording device, optically assisted magnetic recording head and magnetic disk device

The present invention provides a magnetooptic device, a magnetooptic head, and a magnetic disk drive each capable of performing optically assisted magnetic recording and each having a small size, improved recording density, and a higher transfer rate. In a magnetooptic device, a magnetic circuit including a magnetic gap and a thin film magnetic transducer having a coil portion are stacked on the surface of a semiconductor laser. By the arrangement, optically assisted magnetic recording can be performed, small size and light weight are achieved, and higher transfer rate can be implemented.

Objective lens system and optical disk apparatus using the same

An objective lens system includes a first lens and a second lens. The first lens has a first surface for allowing entry of light and a second surface opposite to the first surface. The second lens has a spherical third surface and a flat fourth surface opposite to the third surface. The third surface faces the second surface and has a radius of curvature r0. The second lens has a thickness d0 and a refractive index n0. The thickness n0, the radius of curvature r0 and the refractive index n0 satisfy a relation: d0>r0>n0d0.

Flying optical head with dynamic mirror

A magneto-optical flying head utilizes a steerable mirror in combination with a light source and a lens to write and read data onto a magneto-optical storage disk. A beam of laser light transmitted from the light source to the optical head is reflected onto a steerable micro-machined folding mirror. The reflected light from the folding mirror is directed through an embedded micro-objective GRIN lens. Fine tracking and short seeks to adjacent tracks are performed by rotating the mirror about an axis of rotation. In this way a focus spot is scanned back and forth in a direction which is approximately parallel to the radial direction of the storage disk.

Rotation amount detecting system of deflection mirror for optical disc drive

Disclosed is a rotation amount detecting system for detecting a rotation amount of a deflection mirror, which is rotatable about an rotation axis, employed in an optical disc drive. The rotation amount detecting system is provided with a light emitting system that emits a light beam to the deflection mirror. The light beam has a line-like cross section extending in a direction perpendicular to the rotation axis. Further, a detecting system is provided to receive the beam reflected by the deflection mirror and determines the rotation amount of the deflection mirror in accordance with the received beam.

Level flying burnishing head

A level flying burnishing head includes a plurality of burnishing pads, e.g., thirteen, that are symmetrically arranged about orthogonal axes on the bottom surface of the burnishing head. The burnishing pads may have a polygonal geometry having at least four sides. The corners between the sides of the burnishing pads may be rounded. The separation between the burnishing head is configured to fly substantially parallel to the surface of the disk that it is burnishing. The burnishing head may have no taper on the leading edge to achieve the level flying condition.

Information recording disc having an anti-reflection layer and information recording/reproducing apparatus

An anti-reflection coating layer is formed on the surface portion of a recording medium. This enables to obtain a margin for the air gap thickness change when recording/reproducing an information signal using the "near-field technique" as well as minimize a data loss caused by a collision. Furthermore, the present invention provides a film configuration which can easily be produced.

Flying recording head having semiconductor laser formed by growing semiconductor crystal, and method of manufacturing same

A small, high-precision, and cheap flying recording head having high mass-productivity, high recording density, and high transfer rate, a disk drive, and a method of manufacturing the flying recording head are disclosed. The flying recording head is manufactured by forming a semiconductor laser oscillation region by growing a semiconductor crystal on a rear end surface of a substrate made of a single crystal such as sapphire, and forming a air bearing surface in an output surface of the semiconductor laser and the substrate.

Protective coating for a magneto-optical disc

A magneto-optical disc includes protective overcoats that significantly improve the durability of the disc. In particular, the protective overcoat involves a carbon layer over the magnetic, optical data storage layer. The magnetic, optical data storage layer includes a magnetic metal or alloy with a Curie temperature accessible by optical heating. In preferred embodiments, the carbon coating has a small absorption coefficient for selected optical frequencies.

Magnetic head lifting and lowering device

It is an object of the present invention to provide a magnetic head lifting and lowering device that allows a thin magneto-optical disk recording and reproducing device to be provided. A magnetic head lifting and lowering device is provided with a fastening plate, a magnetic head having a first position at which information is recorded and which is near or in contact with the information recording medium and a second position that is away from the information recording medium, a support member including an attachment portion to which the magnetic head element is attached, a fastened portion fastened to the fastening plate, and a leaf spring portion oblique to the fastening plate between the attachment portion and the fastened portion position, and a lifter. The lifter includes a connected sliding member that is connected to the fastening plate in such a manner that it is capable of sliding in a direction linking the attachment portion and the fastened portion of the support member. The ...

SCANNING INTERFEROMETRIC NEAR-FIELD CONFOCAL MICROSCOPY

Magneto-optical recording apparatus

METHOD OF MANUFACTURING A MAGNETIC HEAD HAVING A PLANAR COIL

A simple method of manufacturing a magnetic head having a head face and including a planar magnetic coil (7) which extends parallel to the head face. According to the method, the magnetic coil is formed at a first side of a first substrate (1). Thereafter, the first substrate provided with the magnetic coil is adhered with its first side to a side of a second substrate (9), whereafter material of the first substrate is removed from a second side of the first substrate, the second side being turned away from the first side, in order to form the head face, in such a manner that the magnetic coil is situated near to the head face.

Optical disc drive for double-sided discs

The optical disc drive has two sliders (3a,3b) which are movable over the disc surface, and each of which carries a lens. An optical unit (4) which is separate from the lenses has a laser source module (7) for transmitting a light beam. A beam path selector selectively deflects the beam from the laser module to one of the lenses. The second lens may be hemispherical and arranged between the optical disc and the first lens, such that its flat surface is facing the disc. The mid-point of the curve of the spherical surface of the hemispherical lens is arranged between the first lens and its focus. An Independent claim is included for an optical disc drive.

Understützungs- und Verbindungsgerät für einen Magnetfeldmodulationskopf, der in einer photomagnetischen Aufzeichnung benutzt wird

Gleiter-Magnetkopf für magneto-optische Aufzeichnung

Magnetooptischer Kopf und magnetooptische Speicheranordnung

Magnetooptischer Kopf, welcher ein transparentes Substrat, eine Spule, die auf einer ersten Fläche des transparenten Substrats gebildet ist, ein Paar von ersten Elektroden, die auf einer Seitenfläche des transparenten Substrats so gebildet sind, dass sie mit einem ersten bzw. einem zweiten Ende der Spule verbunden sind, und eine Objektivlinseneinheit einschließt, die an eine zweite Fläche des transparenten Substrats gebunden ist. Der magnetooptische Kopf schließt ferner ein: eine flexible Leiterplattenlage, die an die zweite Fläche des transparenten Substrats gebunden ist, wobei die flexible Leiterplattenlage eine Öffnung zum Einführen einer Objektivlinseneinheit, ein Paar von Leitermustern und ein Paar von zweiten Elektroden aufweist, die jeweils an ersten Enden der Leitermuster gebildet sind. Der magnetooptische Kopf schließt ferner ein Paar leitfähiger Drähte zum Verbinden der ersten Elektroden bzw. der zweiten Elektroden ein.

Galvano mirror unit

A galvano mirror unit includes a galvano mirror 26, a rotor 50 to which the galvano mirror is mounted, a stator 60 that rotatably supports the rotor about a rotation axis Z, a pair of center pins 51, 52 provided to the stator or rotor, and a pair of receive members 53, 54 provided to the rotor or stator. The receive members respectively receive the center pins. The rotor is pivoted by the engagement of the center pins and the receive members. The receive member may be made of ruby or sapphire. A biassing member eg a plate spring (82, Fig 13) may bias the pin to the receive member. Alternatively, biassing may be effected using a magnet (206, Fig 36) and a magnetic chip (207, Fig 36). An offset magnet (256, Fig 48) may be on stator (260, Fig 48). Positioning magnets (271, 272, Fig 55) may be on the rotor and stator.

Magnetic head coated with low surface energy material

To select suitable materials for highly corrosion resistant coating, and to form magnetic head coating in thin films of suitable thickness, in order to improve corrosion resistance of magnetic heads in HDDs and secure reliability of HDDs. At least parts of surfaces of write element or read element of the surface of the magnetic head are coated with low surface energy materials. Therefore, these coated surfaces do not easily attract water due to their humidity resistance, wetting resistance and hydrophobicity, resulting in improvement of corrosion resistance of these coated surfaces. As particular evaluation, surface energy values of water and low surface energy materials are determined. Then, as low surface energy materials FCOC (fluorocarbon compounds), and especially materials containing perfluoroalkylpolyoxyethyleneethanol are selected. Particular surface energy values of selected materials are also determined. Further, in forming thin films of low surface energy materials on magnetic ...

Read/write system for flexible optical/magneto-optical media

A read/write storage system for reading/writing data to and from a flexible optical or magneto-optical media (disc or tape eg helically scanned by rotating drum) includes an optical read/write head and a fine movement stabilizer 64 positioned proximate the flexible media for stabilizing the flexible media in a desired position so that the optical head providing focussed light need not be moved substantially toward or away from the media in order to maintain the light focussed on the media. A record disc may be additionally stabilised by Bernouilli plate 66 as part of cartridge (12) (eg Fig 1) or attached to drive 10. Magnetic head (170) below the media and plate (166) may provide stabilisation (Fig 11); coupler (164) surrounding lens (156) may also be shaped for stabilisation. Geometrics of stabilizer (64) and magnetic head (170) are detailed W.r.t. (Figs 5 and 12). The magneto-optical assembly of (Fig 13) includes U-shaped magnetic element (180) and the optical head on the same side of ...

Optical system for optical disc drive

The present invention concerns an optical system for an optical disc drive. A head (6) is provided with a laser source (7), an objective optical system, and a deflection mirror provided between the laser source and the objective optical system. As the deflection mirror (26) is rotated, the angle of incidence of the beam incident of the objective optical system changes so that a fine tracking is performed. When the deflection mirror is rotated, based on the rotation amount and a distance between the deflection mirror and the objective optical system, the deflection mirror is moved in a direction along which the laser bean is incident so that the laser beam deflected by the deflection mirror is incident on the objective optical system substantially at the same position regardless of rotation amount of the deflection mirror.

Slider for optical disc data storage system

INTERFEROMETRIC CONFOCAL NEAR FIELD SCANNING MICROSCOPY

OPTICAL AUFZEICHNUNGSUND READ SYSTEM AND USE OPTICAL DATA MEMORY MEDIUM IN SUCH A SYSTEM

INTEGRATED MICRO-OPTICAL SYSTEMS

Head arrangement with improved field characteristic for domain expansion technology

Magneto-optical data storage system

INTEGRATED MICRO-OPTICAL SYSTEMS

An integrated micro-optical system includes at least two wafers with at least two optical elements provided on respective surfaces of the at least two wafers. An active element having a characteristic which changes in response to an applied field may be integrated on a bottom surface of the wafers. The resulting optical system may present a high numerical aperture. Preferably, one of the optical elements is a refractive element formed in a material having a high index of refraction.

INFORMATION PROCESSING APPARATUS HAVING A FLOATING-TYPE HEAD WITH A BEVELLED SLIDER

An information processing, i.e. reproducing and recording, apparatus which has a rotative driving means for rotating a disk-shaped recording medium, a floating-type head for reproducing information recorded in the recording medium while floating above the disk-shaped recording medium that is being rotated by the rotative driving means, and a suspension, made of an elastic member, for supporting the floating-type head. The floating-type head has a slider which is floated by an air flow that is directed near the surface of the rotating disk-shaped recording medium. The slider has a bevelled portion at one side that faces the outer edge of the disk-shaped recording medium, such that any contact between the slider and the ridge that exists along the outer edge area of the disk-shaped recording medium is virtually eliminated. Since the slider virtually avoids contact with the ridge that exists along the outer edge area of the disk-shaped recording medium, the storage capacity of the disk-shaped ...

MEMORY SYSTEM READ/WRITE APPARATUS AND APPARATUS FOR READING AND/OR WRITING OF A FLEXIBLE SUPPORT DATA OPTICALLY DETECTABLE

Coil for magnetic head, magnetic head, and magneto-optical recorder

The present invention is a flat magnetic head coil constituted by spiral coil patterns made of a conductive material film and two terminals connected to the coil patterns, the coil patterns have a substantially rectangular sectional shape. The coil pattern has a minimum pitch P m of the coil pattern, a width W m of the sectional shape at the minimum pitch P, and a height H m satisfy 15 m P 70 m and 1.85-0.012P H/W 7.5-0.06P. When an impedance ZO between the two terminals of the coil while a magnetic core made of a magnetic material is not attached is equivalently constituted by an inductance LO, an RF resistance RpO parallel to the inductance LO, and a DC resistance Rs which is series-connected to the inductance LO and is independent of a frequency, the inductance LO H at 10 MHz satisfies LO 0.85 H.

RECORDING HEAD AND RECORDING DEVICE

A recording device is provided with a recording head which uses light for recording information on a recording medium. The recording head is provided with a slider and an optical waveguide. The slider floats and relatively shifts above the recording medium. The optical waveguide is arranged on the slider, and a difference between the refractive index of a core and that of a clad is 20% or more.

MONOLITHIC OPTICAL HEAD

La présente invention concerne une tête optique monolithique qui facilite la lecture et l'écriture de données optiques sur un support d'enregistrement optique. Cette tête optique comprend un substrat monolithique formé sur un matériau optiquement transparent. Le substrat présente un premier côté et second côté plat opposé au premier côté. Le premier côté présente une région centrale incurvée produisant un effet de lentille, et une région périphérique. Le second côté plat comporte une région centrale opposée à la surface incurvée qui assure le couplage des rayonnements avec ladite surface incurvée au travers du substrat. Ce second côté plat comporte également une région périphérique opposée à la région périphérique du premier côté.

Magneto-optical data storage system having an optical-processing flying head

A magneto-optical (MO) data storage system has a flying optical head supported over a MO storage medium, the flying head having channels or grooves formed therein and optical elements disposed within the grooves for directing an incident light beam to the storage medium and for receiving a reflected light beam from the storage medium. The flying head may comprise a two-piece assembly comprising a slider body which flies over the surface of the storage medium, and a separate optics mounting block formed to receive the optical elements and to be supported on the flying head. Preferably, the slider body is L-shaped and provides an angled surface for receiving a micro-machined mirror aligned with optical elements on the optics mounting block and controllable for deflecting the light beam to and from the storage medium.

Magneto-optical head capable of operation under inclination of the disc

A head unit is provided which is able to satisfactorily record/reproduce an information signal to and from a disk even if the disk can considerably be inclined (deflected) by a load applied by the head. The load applied from the magnetic head to the disk is set to be not larger than an upper limit which is calculated in accordance with a permissible range for incident angles of laser beams emitted from the optical head to the disc-shape recording medium, the thickness of the disc-shape recording medium and the radius of the disc-shape recording medium. As an alternative to this, the load is set to be not larger than an upper limit calculated in accordance with a permissible range of the amount of deviation between the point to which laser beams emitted from the optical head to the disc-shape recording medium and a point to which laser beams are converged, the thickness of the disc-shape recording medium and the radius of the disc-shape recording medium.

Method and apparatus for dynamically controlling the flying behaviour and height of a read/write head in a storage device

A suspension arm (300) of a disk storage device has an elastic portion (310) with thickness d1and a rigid portion (320) with thickness d2. At the free end of the suspension arm, a slider (325) is mounted on the suspension arm. The bottom surface of the slider has a distance FH to a top surface of a hard disk (329). The suspension arm particularly comprises a heating element (330) disposed on the suspension arm. An electric current Icflowing through electrical supply wires (350) causes the temperature of the suspension arm locally to rise and therefore its spring constant to decrease. Together with the force Faresulting from the air cushion effect of the slider a new equilibrium flying height FH is stabilized.

Magneto-optical disk unit compatible with different two types of magneto-optical disks and a magnetic-field generator suitable thereof

A magneto-optical disk unit has a first magnetic-field generator for generating a magnetic field corresponding to a frequency in a recording signal frequency band and a second magnetic-field generator for generating DC magnetic fields of both north-seeking and south-seeking poles in a non-contact manner with a loaded magneto-optical disk. The first magnetic-field generator has a slider part for sliding over a loaded magneto-optical disk in a floating manner using an aerodynamic effect. The unit further has a transfer driver for moving the first and second magnetic-field generators in a direction parallel to the loaded magneto-optical disk and a rotary plate for vertically moving the first magnetic-field generator. The unit also has a disk judging circuit for judging whether the loaded magneto-optical disk is of a magnetic-field-modulation overwritable type (first type) or an erase-operation-required type (second type), and a controller for controlling the rotary plate to bring the first ...

Transducer apparatus including transducer with recording medium contact line perpendicular to transducer pivot axis

A transducer supporting apparatus (K1-K7) comprises: a transducer (11, 12) which confronts a recording medium (1) and is moved relative to the recording medium (1) in a direction (R) so as to record and reproduce information on the recording medium (1); a slider (21-27) which is coupled with the transducer (11, 12) and includes a projecting member (21a-25a; 26a, 26b; 27a, 27b) protruding towards the recording medium (1); a pivot member (31-33; 35-37) for pivotally supporting the slider (21-27) so as to pivot the slider (21-27) about a pivot axis (x-axis) substantially parallel to the recording medium (1) and at least not parallel to a contact line (C) between the projecting member (21a-25a; 26a, 26b; 27a, 27b) and the recording medium (1); and a loading member (31-33; 35-37) for depressing the projecting member (21a-25a; 26a, 26b; 27a, 27b) against the recording medium (1); wherein the contact line (C) is oriented in a direction other than the direction (R) of relative movement between ...

Magneto-optical head device having a lubricated member

A magneto-optical recording device has a flying head that floats over a magneto-optical disk according to the rotation of the magneto-optical disk. The flying head includes a head slider. A solid lubricant is applied to the bottom surface of the head slider facing the magneto-optical disk. Since the solid lubricant makes the flying head contact with the magneto-optical disk smoothly, the scratching and wear of the magneto-optical disk and the flying head decrease. Therefore, the reliability and the durability of the magneto-optical recording device can improve. Physical protrusions and recessions or holes containing fluorocarbon oil therein may be formed instead of the solid lubricant. In this case, the contact area between the flying head and the magneto-optical disk is also smaller than the case where physical protrusions and recessions are not formed. In addition, with a configuration such that thin-film layers made of a fluorocarbon resin having an excellent lubricity are formed on ...

Floating head slider with improved suspension for use in magnetic/optical disk recording apparatuses

A slider connected to a floating head assembly having a magnetic head at a tail or air flow-out end is controlled by a load beam at a position of air flow-in end via a gimbal. When the slider is brought close to a disk-shaped revolving recording medium, its posture is such that the gap at the flow-in end is wider than that at the flow-out end. An air film is rapidly formed starting from the flow-out end to provide stability and cushioning effects between the slider and the disk-shaped revolving recording medium. As a result, a soft landing due to the laminar air flow is automatically achieved.

Flying type optical head integrally formed with light source and photodetector and optical disk apparatus with the same

An optical head including a semiconductor laser source, a condenser lens, a photodiode for detecting a laser light emitter from said semiconductor laser source, and an optical coupler unit for collecting the laser light to the photodiode. A chromatic aberration W of condenser lens is satisfied by an expression W(h, NA)={(NA)3DELTAlambd/4lambd}h, where h is a height of incident light from an optical axis on a hologram, NA is a numerical aperture, DELTAlambd is a wavelength fluctuation, and a lambd is a wavelength at recording. The height h is determined so that the chromatic aberration W becomes equal to or less than lambd/4.

Disc drive suspension and head

A magneto-optical (MO) disc drive including a novel suspension, slider body, airbearing surface, and magnetic head. The MO disc drive includes a fine-focus actuator block including an objective lens, wherein the coarse carriage block moves radially above a surface of an MO disc to position the objective lens. The MO disc drive also includes a flat suspension having a first end and a second end, wherein the first end is fixedly attached to the fine-focus actuator block and the second end is attached to the coarse carriage block. A gimbal is moveably attached to an opening in a surface of the suspension and a magnetic head assembly is attached to the gimbal. The magnetic head assembly is loaded and unloaded by the load/unload mechanism independent of the objective lens and attached to the coarse actuator.

Magnetic head device supported by a bent load beam

A magnet head device capable of minimizing the sway of a head body in a direction parallel to a front surface of a recording medium, and which allows easy application of a pressing force to press the head body into contact with the front surface of the recording medium. In one embodiment of the invention, the magnetic head comprises a carriage having a main body extending over a recording medium, an elastically deformable support member connected to the bent portion of the carriage, and a head body installed to the support member. The support member may be fixed in surface-contact with the bent portion of the carriage and bent at a surface where the support member is fixed to the bent portion and extends along the recording medium. In one embodiment, the corner of the bend of the support member provides the support point of connection.

Microelectro mechanical system for magneto-optic data storage apparatus

The present invention relates to a Microelectro mechanical system structure. More specifically the invention relates to utilize a sacrificial layer to fabricate an air bearing structure, followed by forming an aperture, and reducing the aperture to nano-scale by electroplating. And then, by using of two thick film photoresist films for twice electroplating fabrication, for fabricate metal microcoils having high aspect ratio structure and interconnection metal line, to achieve efficiencies of utilizing area and reducing resistance. Moreover, proceed lithography depends on different portions and exposure dose. Then form a single photoresist film to have a specific dimension and thickness structure, finally, by using reflow process, forming a magneto-optic (MO) pickup head comprises of Supersphere Solid Immersion Lens (SSIL), nano-aperture, microcoils and air bearing by using an integrated fabrication, with advantages such as no high cost device and precise apparatus are required in the process ...

Optical head and apparatus provided therewith

An optical head comprises a laser light source, detectors, a reflecting mirror, a magnetic coil, and a driving circuit which are formed in a monolithic manner on a surface of a substrate. A diffraction grating is formed on the reflecting mirror. A reflected light beam can be divided into those directed to the detectors. Optical paths from the reflecting mirror to the respective detectors are disposed in directions along the substrate. Accordingly, the thickness of the optical head can be made thin. The substrate can be also processed into a slider. The optical head is capable of high speed access and high speed data transfer, in which a miniaturized size and a light weight are realized.

Magnetooptical recording magnetic head and magnetooptical recording apparatus

A magnetooptical recording magnetic head is provided with a base (s), a core (c), a coil (w) wound on the core, and a driving device for the coil. The core provided on the base is formed by laminating a plurality of magnetic thin films (i,m) with a high permeability and a high saturation magnetic flux density so as to sandwich insulating films therebetween. ...

Magnetkopf für magneto-optische Aufzeichnung und Verfahren zu seiner Herstellung

Optical recording and reproduction method enables a small dia. light spot to be projected onto an optical medium such as an optical disk

The method involves projecting a light beam (P1) from a light source onto a signal recording layer (2) of the optical recording medium, which has an optical coupling layer (1) on the light incidence side of the signal recording layer. An objective lens structure (4) with a light converging function is arranged close to the recording medium at a distance less than one wavelength of the light from the source. The light beam is projected onto the recording layer whereby a beam converged by the objective lens structure is allowed to couple into the optical coupling layer. Independent claims are also included for an optical recording and reproduction arrangement and an optical recording medium.

INTERFEROMETRISCHE KONFOKALE NAHFELD-ABTASTMIKROSKOPIE

Laufwerk für eine optische Speicherplatte

Laufwerk für eine optische Speicherplatte (2), mit zwei Schlitten (3a, 3b), die jeweils eine Objektivoptik (1a, 1b) tragen und über die Flächen einer optischen Speicherplatte (2) bewegbar sind, mit einer von den Schlitten (3a, 3b) separaten optischen Einheit (4), die ein Laserquellenmodul (7) zum Aussenden eines Lichtstrahls hat, und mit einem Strahlengangauswahlsystem (50 bis 54), das den von dem Laserquellenmodul (7) ausgesendeten Lichtstrahl wahlweise einer der beiden Objektivoptiken (1a, 1b) zuführt, dadurch gekennzeichnet, daß das Strahlengangauswahlsystem (50 bis 54) einen zwischen einer ersten und einer zweiten Stellung bewegbaren Spiegel (50) hat, der den Lichtstrahl in der ersten Stellung auf die eine Objektivoptik (1a) und in der zweiten Stellung auf die andere Objektivoptik (1b) reflektiert, daß die optische Einheit (4) einen Galvanospiegel (26) hat, der zum Ändern der Einfallsrichtung des auf die beiden Objektivoptiken (1a, 1b) einfallenden Lichtstrahls geschwenkt wird, und ...

Magneto-optische Wiedergabeköpfe.

INTEGRIERTE MIKROOPTISCHE SYSTEME

Photomagnetischer Komposit-Kopf.

MAGNETOOPTISCHES AUFZEICHNUNGSSYSTEM MIT NAHFELDOPTIK

Schwebende Magnetkopf-Anordnung

Galvano mirror unit with positioning magnet

A galvano mirror unit comprises a galvano mirror (26), a rotor (250) to which said galvano mirror is mounted, a stator (260) that rotatably supports said rotor about a rotation axis, first and second center pins (251,252) provided to said stator, first and second receive members (253,254) provided to said rotor, said first and second receive members respectively receiving said first and second center pins, and a first positioning magnet (271) provided to said rotor, a second positioning magnet (272) provided to said stator, each of said first and second positioning magnets including a portion of N-pole and a portion of S-pole, wherein a neutral position of said rotor is obtained by the attraction of said first and second positioning magnets. Alternatively, centre pins (301, 302, Fig 57) may be on the rotor, pin (302, Fig 57) having an N-pole and an S-pole and positioning magnet (305, Fig 57) may be on the stator.

Galvano mirror unit with plate spring on stator

Optical system for optical disc drive

PROCEDURE FOR THE INCREASE OF THE LINEAR DENSITY OF WRITING IN MAGNETOOPTIC STORAGE MEDIA.

SLIDING SOLENOID ACTUATOR FOR MAGNETOOPTIC RECORDING

Disk cartridge with dual housing structure

Method and apparatus for dynamically controlling the flying behaviour and heightof a read/write head in a storage device

Magnetooptic recording medium and magnetooptic recorder

Magneto-optic recording system employing near field optics

PHOTOMAGNETIC COMPOSITE HEAD

MAGNETO-OPTICAL RECORDING DEVICE

A magneto-optical recording device has a flying head that floats over a magneto-optical disk according to the rotation of the magneto-optical disk. The flying head includes a head slider. A solid lubricant is applied to the bottom surface of the head slider facing the magneto-optical disk. Since the solid lubricant makes the flying head contact with the magneto-optical disk smoothly, the scratching and wear of the magneto-optical disk and the flying head decrease. Therefore, the reliability and the durability of the magneto-optical recording device can improve. Physical protrusions and recessions or holes containing fluorocarbon oil therein may be formed instead of the solid lubricant. In this case, the contact area between the flying head and the magneto-optical disk is also smaller than the case where physical protrusions and recessions are not formed. In addition, with a configuration such that thin-film layers made of a fluorocarbon resin having an excellent lubricity are formed on ...

Method and accessories for manufacturing slider

Device and Method for Recording Information on a Magnetic Data Storage Medium

Disclosed is a device for recording information on a magnetic data storage medium which comprises a magnetic field source designed to be capable of generating a magnetic field in the region where the magnetic data storage medium is arranged; a source of electromagnetic radiation at a matrix of controllable mirrors; and a matrix of controllable mirrors mounted in a housing so as to be capable of reflecting electromagnetic radiation by means of the controllable mirrors into the region where the magnetic data storage medium is arranged and/or in another direction. The present invention makes it possible to record information on a fixed magnetic data storage medium. 1. A device for recording information on a magnetic data storage medium comprising:a magnetic field source configured to generate magnetic field in an area of the magnetic storage medium;a source of electromagnetic radiation configured to generate electromagnetic radiation and direct generated electromagnetic radiation to a matrix of controlled mirrors; andthe matrix of controlled mirrors installed in a housing with an ability to reflect electromagnetic radiation by controlled mirrors to the area of the magnetic storage medium and/or to the other side.2. The device according to claim 1 , wherein the electromagnetic radiation is optical one.3. A device according to claim 1 , wherein the source of electromagnetic radiation is a laser.4. The device according to claim 1 , wherein the matrix of controlled mirrors contains rotatable micromirrors.5. The device according to claim 1 , further comprising a control unit comprising:a magnetic field source control module, an electromagnetic radiation source control module, a control module for a matrix of controlled mirrors, a memory configured to store sequences of commands and/or recorded information, and a processor configured to receive data from the memory and control the magnetic field source control module, the electromagnetic radiation source control module, and ...

MAGNETIC RECORDING MEDIUM AND MAGNETIC STORAGE APPARATUS

A magnetic recording medium includes a substrate, an underlayer, and a magnetic layer including an alloy having a L1type crystal structure with a (001) orientation, wherein the substrate, the underlayer, and the magnetic layer are stacked in this order, the underlayer includes a first underlayer, the first underlayer is a crystalline layer that includes a material containing W as a main component and a nitride whose content ranges from 1 mol % to 80 mol %, and the nitride includes one or more elements selected from a group consisting of Al, B, Si, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, and W. 1. A magnetic recording medium comprising:a substrate;an underlayer; and{'sub': '0', 'a magnetic layer including an alloy having a L1type crystal structure with a (001) orientation,'}wherein the substrate, the underlayer, and the magnetic layer are stacked in this order, the first underlayer is a crystalline layer that includes a material containing W as a main component and a nitride whose content ranges from 1 mol % to 80 mol %, and', 'the nitride includes one or more elements selected from a group consisting of Al, B, Si, Ti,, 'the underlayer includes a first underlayer,'}Zr, Hf, V, Nb, Ta, Cr, Mo, and W.2. The magnetic recording medium according to claim 1 , whereinthe content of the nitride in the first underlayer ranges from 20 mol % to 30 mol %, andthe nitride includes Ti, Zr, or Ta.3. The magnetic recording medium according to claim 1 , whereinthe underlayer further includes a second underlayer, andthe second underlayer is a crystalline layer provided between the substrate and the first underlayer and containing W as a main component thereof.4. The magnetic recording medium according to claim 1 , further comprising:an orientation control layer between the substrate and the underlayer,wherein the orientation control layer is a Cr layer having a BCC structure, an alloy layer containing Cr as a main component and having a BCC structure, or an alloy layer having a B2 structure.5. ...

HEAD GIMBAL ASSEMBLY AND MAGNETIC DISK DEVICE WITH THE SAME

According to one embodiment, a head gimbal assembly includes a suspension and a magnetic head supported by the suspension via a gimbal portion. The magnetic head includes a slider and a head portion in the slider. The slider includes an air bearing surface, a pair of side surfaces, a leading-side end surface, and a trailing-side end surface. The slider includes a deep groove which is formed between a leading-side step portion and a trailing-side step portion and is open to the air bearing surface and the pair of side surfaces, and at least a pair of capturing grooves which is formed on a bottom surface of the deep groove. The capturing grooves are provided along the pair of side surface and are placed with a gap from the pair of side surfaces. 1. A head gimbal assembly comprising:a suspension;a gimbal portion provided at the suspension; anda magnetic head supported on the gimbal portion,wherein the magnetic head comprisesa slider which comprises an air bearing surface including a pair of side edges, a pair of side surfaces along the pair of side edges of the air bearing surface, a leading-side end surface, and a trailing-side end surface, anda head portion provided in the slider and configured to write and read data, andwherein the slider comprises a leading-side step portion on a leading-side end portion of the air bearing surface, a trailing-side step portion on a trailing-side end portion of the air bearing surface and including the head portion, a deep groove which is formed between the leading-side step portion and the trailing-side step portion and is open to the air bearing surface and the pair of side surfaces, and at least a pair of capturing grooves which is formed on a bottom surface of the deep groove, and the pair of capturing grooves is provided along the pair of side surfaces and is disposed with a gap from the pair of side surfaces, each of the capturing grooves intermittently extends from the trailing-side step portion to the leading-side step ...

HEAD GIMBAL ASSEMBLY AND MAGNETIC DISK DEVICE HAVING THE SAME

According to one embodiment, a head gimbal assembly includes a suspension and a magnetic head supported by the suspension via a gimbal portion. The magnetic head includes a slider and a head portion provided in the slider. The slider includes an air bearing surface, a pair of side surfaces, a leading-side end surface, and a trailing-side end surface. The slider includes a deep groove which is formed between the leading-side step portion and the trailing-side step portion and is open to the air bearing surface and the pair of side surfaces, and a pair of partition walls which extends from the trailing-side step portion toward the leading-side step portion along the pair of side surfaces to close at least a portion of a side surface opening of the deep groove. 1. A head gimbal assembly comprising:a suspension;a gimbal portion provided in the suspension; anda magnetic head supported by the gimbal portion,wherein the magnetic head comprisesa slider which comprises an air bearing surface including a pair of side edges, a pair of side surfaces along the pair of side edges, a leading-side end surface, and a trailing-side end surface, anda head portion provided in the slider and configured to record and read data, andwherein the slider comprises a leading-side step portion provided on a leading-side end portion of the air bearing surface, a trailing-side step portion which is provided on a trailing-side end portion of the air bearing surface and in which the head portion is imbedded, a deep groove which is formed between the leading-side step portion and the trailing-side step portion and is open to the air bearing surface and the pair of side surfaces, and a pair of partition walls which extends from the trailing-side step portion toward the leading-side step portion along the pair of side surfaces to close at least a part of a side surface opening of the deep groove.2. The head gimbal assembly of claim 1 , whereineach of the partition walls is formed to be flush with the ...

SYSTEMS AND METHODS FOR INCREASING DATA RATE AND STORAGE DENSITY IN MULTILAYER OPTICAL DISCS

Systems and methods, e.g., optical apparatuses, for digital optical information storage systems that improve the speed, signal to noise, controllability, and data storage density for fluorescent and reflective multilayer optical data storage media. The systems and methods include an optical system for a reading beam of a data channel from a moving single or multi-layer or otherwise 3-dimensional optical information storage medium that comprises at least one optical element characterized by restricting the field of view (FOV) of the reading beam on an associated image plane to 0.3 to 2 Airy disk diameters in a first direction. 1. An optical system for a reading beam of a data channel from a moving single or multi-layer , 3-dimensional optical information storage medium , comprising:at least one optical element characterized by restricting the field of view (FOV) of the reading beam on an associated image plane to 0.3 to 2 Airy disk diameters in a first direction.2. The optical system of claim 1 , wherein the at least one optical element restricts the FOV of the reading beam by limiting FOV on a reading optical detector to 0.3 to 2 Airy disk diameters in the first direction.3. The optical system of claim 1 , wherein the at least one optical element restricts the FOV of the reading beam by limiting a data spot size focused on a core of an optical fiber to 0.3 to 2 Airy disk diameters in the first direction claim 1 , the optical fiber coupling the reading beam to an associated reading optical detector.4. The optical system of claim 1 , wherein the at least one optical element restricts the FOV of the reading beam to 0.3 to 1 Airy disk diameters in the first direction.5. The optical system of claim 3 , wherein the at least one optical element limits at least one of:the FOV on the reading optical detector to 0.3 to 2 Airy disk diameters in the first direction; anda data spot size focused on the end of the optical fiber to 0.3 to 2 Airy disk diameters in the first ...

Artificial finger print liquid, testing method for optical information medium using it and optical information medium

저장 매체, 기판 제조 방법, 데이터 검색 방법, 엠보싱 방법 및 데이터 저장 매체 형성 방법

바람직한 실시예에서, 데이터 저장 매체는 기판의 한쪽면이나 양쪽면에 배치되는 원하는 표면 형태들과, 또한 기판의 한쪽면이나 양쪽면에 배치되는 자기-광학 물질과 같은 데이터 저장층과 임의의 보호, 절연 및/혹은 반사층들로 그 자리(in situ) 형성될 수 있는, 동질이거나 이질의 플라스틱 기판을 포함한다. 기판은, 표면의 무결성과 매끄러움에 역효과 없이 강성을 증가하기 위해 사용되는 다양한 형태와 기하학의 보강제로, 동질의, 테이퍼 형상, 오목 형상 혹은 볼록 형상의 기하 구조를 실질적으로 가질 수 있다.

Magneto-optical switching device and method for switching a magnetizable medium

본 발명은, 자화가능한 매질을 포함하는, 매질 내의 자화를 스위칭하는 자기-광학 스위칭 장치에 관한 것이다. 본 발명에 따르면, 상기 매질의 자화를 선택적으로 배향시키기 위해, 상기 자화가능한 매질의 자기 스핀 시스템으로 각 운동량으로 전달하는데 적합한 방사 시스템이 제공된다. 더욱이, 본 발명은, 자화가능한 매질을 제공하는 단계; 선택적으로 선택된 각 운동량의 방사 빔을 제공하는 단계; 및 상기 각 운동량을 상기 자화가능한 매질의 자기 스핀 시스템으로 이송시키기 위해 상기 매질로 상기 방사 빔을 향하게하는 단계를 포함하는, 자화가능한 매질을 스위칭하는 방법에 관한 것이다. 따라서, 자기 재료들 내의 스핀 상태들은 적절한 각 운동량의 방사를 이용하여 조절될 수 있다. 도메인들의 자화를 배향하기 위한 효율적인 자계가 생성되고, 상기 재료를 국부적으로 가열시키기 위해 동시에 이용될 수 있다. The present invention relates to a magneto-optical switching device for switching magnetization in a medium, comprising a magnetizable medium. According to the present invention, there is provided a spinning system suitable for angular momentum transfer to the magnetic spin system of the magnetizable medium to selectively orient the magnetization of the medium. Moreover, the present invention provides a method for producing a magnetizable medium, the method comprising: providing a magnetizable medium; Optionally providing a radiation beam of angular momentum selected; And directing the radiation beam to the medium to transfer the angular momentum to the magnetic spin system of the magnetizable medium. Thus, the spin states in the magnetic materials can be adjusted using radiation of the appropriate angular momentum. An efficient magnetic field for orienting the magnetization of the domains is created and can be used simultaneously to locally heat the material.

Magneto-optical switching device and method for switching a magnetizable medium

The invention relates to a magneto-optical switching device for switching magnetization in a medium, comprising a magnetizable medium. According to the invention, a radiation system suited for imparting angular momentum to the magnetic spin system of said magnetizable medium, so as to selectively orient the magnetization of said medium. In addition, the invention relates to a method of switching a magnetizable medium, comprising providing a magnetizable medium; providing a radiation beam of a selectively chosen angular momentum; and targeting said radiation beam to said medium so as to transfer said angular momentum to a magnetic spin system of said magnetizable medium. Accordingly, spin states in magnetic materials can be manipulated using radiation of a suitable angular momentum. An effective magnetic field is generated for orienting the magnetization of the domains and can simultaneously be used to locally heat the material.

Hybrid recording device (HRD) with magneto-resistance head on optically assisted media

A storage system comprising a magneto resistance sensor for reading and writing information to a storage disk is provided. The storage disk is comprised of multi-layer media or optically assisted media. The storage disk includes an overcoat and lubricant disposed on a top surface of the media.

Magneto-optical recording medium

A magneto-optical recording medium comprises a transparent substrate, a magneto-optical recording layer formed on the transparent substrate and containing a rare earth metal-transition metal alloy, and a thin film containing at least either one of platinum and palladium and formed at least on one surface of the magneto-optical recording layer. Or, the magneto-optical recording medium comprises the transparent substrate, and a magneto-optical recording layer formed on the transparent substrate by alternately overlaying a plurality of thin layers containing a rare earth metal-transition metal alloy, and a plurality of thin layers containing at least either one of platinum and palladium.

Platinum/cobalt multilayer film for magneto-optical recording

An improved sputtering process for making a platinum/cobalt (Pt/Co) multilayer film comprised of alternating layers of platinum and cobalt, said improvement comprising using as the sputter gas krypton, xenon or a mixture thereof.

Optical recording medium having two separate recording layers

In an optical information recording medium having at least two information layer, guide grooves for tracking or sample pits or information pits corresponding to information signals are formed on a surface of a first substrate. A first information layer formed by a thin film for reflecting a portion of a light beam made incident on the first substrate and permitting penetration of a portion of the light beam is formed on a surface of the first substrate. Guide grooves for tracking or information pits corresponding to information signals are formed on a surface of a second substrate. A second information layer having a reflectance higher than that of the first information layer is formed on a surface of the second substrate. Between the first information layer and the second information layer, there is formed a transparent separation layer for positioning the first information layer and the second information layer to be spaced a predetermined distance apart from each other.

Optical information recording medium and reproducing apparatus with layer identification

In an optical information recording medium having at least two information layer, guide grooves for tracking or sample pits or information pits corresponding to information signals are formed on a surface of a first substrate. A first information layer formed by a thin film for reflecting a portion of a light beam made incident on the first substrate and permitting penetration of a portion of the light beam is formed on a surface of the first substrate. Guide grooves for tracking or information pits corresponding to information signals are formed on a surface of a second substrate. A second information layer having a reflectance higher than that of the first information layer is formed on a surface of the second substrate. Between the first information layer and the second information layer, there is formed a transparent separation layer for positioning the first information layer and the second information layer to be spaced a predetermined distance apart from each other.

Multilayered structures and their use as optical storage media

A multilayer structure that includes a substrate layer containing a mixture containing one or more copolymers that include polymerized residues from one or more styrenic monomers and one or more C 1 -C 32 linear, branched, or cyclic alkyl(meth)acrylate monomers and/or maleic-type monomers and one or more elastomeric materials; and a reflective film layer coated on a surface of the substrate layer. The multilayer structure can be used as an optical storage medium.

光磁気記録媒体

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Recording medium, recording / reproducing method, and recording / reproducing apparatus

光磁気デイスク

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

ミニディスクプレーヤのクリーニングカートリッジ

(57)【要約】 （修正有） 【課題】録音再生用プレーヤにおける磁気ヘッド及びピ ックアップレンズのクリーニングをクリーニングディス クによって信号読み取りエラーがなく一遍に能率よく行 う。 【解決手段】ディスクプレーヤのピックアップレンズ及 び磁気ヘッドに対向する面にクリーニング部材を有する ディスク１をケース内に回転可能に収納したディスクク リーナであって、前記ディスクは記録再生可能なディス クであり、内周よりリードインエリア１２、ユートック エリア１３、およびレコーダブルユーザーエリア１１の 順で構成され、ピックアップレンズ清掃用のレンズクリ ーニング部材のブラシ３をレコーダブルユーザーエリア より内周側に備え、録音再生用プレーヤでは、クリニー ング中にエラー発生することなく記録（録音）操作でピ ックアツプレンズと磁気ヘッドの両方をクリーニングで き、また、再生専用プレーヤでは、再生操作でピックア ップレンズをクリーニングできる。

基于交换偏置的多状态磁存储器和逻辑器件以及磁稳定的磁存储器

用于使用铁磁和反铁磁耦合和交换偏置的磁材料和方法，所述材料和方法用于二元和多状态磁存储器件。

磁気光学記憶素子

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

光熱磁気記録媒体

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Optical devices

An optical device is made of a polymer material comprising (i) polymer portions constituted mainly of aromatic vinyl monomer units and (ii) polyphenylene ether portions; the average molecular weight of the polyphenylene ether portions being from 0.3 to 0.7, expressed in terms of the intrinsic viscosity measured in chloroform at 25°C.

Vinylcyclohexane-based block copolymers

The present invention relates to block copolymers which are predominantly based on vinylcyclohexane and to a process for producing them. The block copolymers can be processed to form mouldings by extrusion or injection moulding. The mouldings which result therefrom are distinguished by their high resistance to thermal deformation, good mechanical properties, high transparency in the visible and near UV range, and by their particularly low birefringence and water absorption.

光学式記録再生装置

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Two-beam magneto-optical recording method and apparatus

光磁気記録媒体

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

How to record vertical tracks on information carriers and information storage media with multiple vertical tracks

본 발명은 정보 매체 상의 길이방향 트랙군들(longitudinal track bundles)을 기록하는 방법에 관한 것이다. 이 방법은 상기 트랙군들의 특수 트랙들에 트랙 정보를 기록하는 것을 포함한다. 특수 트랙들은 서로 인접한다. 새로운 트랙군을 기록할 때, 기록 및/또는 판독 헤드는 이전에 기록된 트랙군의 특수 트랙들에 포함된 트랙 정보를 사용하여 위치 결정될 수 있다. 특수 트랙들 내의 트랙 정보를 코딩하는데 사용되는 패턴들의 여러 예가 설명되어 있다. The present invention relates to a method of recording longitudinal track bundles on an information carrier. The method includes recording track information on special tracks of the track groups. Special tracks are adjacent to each other. When recording a new track group, the recording and / or reading head can be positioned using the track information contained in the special tracks of the previously recorded track group. Several examples of patterns used to code track information in special tracks are described.

光学的記録媒体

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

magneto-optical disk and method for fabricating the same

낮은 레이저 기록 파워로도 효율적인 데이터 기록을 수행할 수 있는 광자기 디스크 및 그 제조방법에 관한 것으로, 기판상에 제 1 유전체층을 형성하고, N 가스와 Ar 가스를 함께 사용하는 반응성 스퍼터링 방법이나 또는 N, P, S, Se, Br, Te, I 중 어느 한 물질이 소량 첨가된 재생층용 합금 타겟을 사용하는 스퍼터링 방법으로 제 1 유전체층상에 재생층을 형성한 다음, 재생층상에 제 2 유전체층, 기록층, 보호층을 순차적으로 형성함으로써, 낮은 레이저 기록 파워로도 효율적으로 정보를 기록할 수 있으므로 경제적으로 잇점이 있다. The present invention relates to a magneto-optical disk capable of performing efficient data recording even with low laser recording power, and to a method of manufacturing the same, which comprises forming a first dielectric layer on a substrate and using N gas and Ar gas together, or N A regeneration layer was formed on the first dielectric layer by a sputtering method using an alloy target for the regeneration layer to which any one of P, S, Se, Br, Te, and I was added, and then the second dielectric layer, recording on the regeneration layer. By sequentially forming the layers and the protective layers, information can be efficiently recorded even at a low laser recording power, which is economically advantageous.

Magneto-optical recording/reproducing

Sputtering target and method for producing same

질량 %로, 순도가 99.99% 이상이며, 상대 밀도가 98% 이상이고, 또한 평균 결정 입경이 5㎛ 미만인 알루미나 소결체, 또는, 질량 %로, 순도가 99.999% 이상이며, 또한 상대 밀도가 98% 이상인 알루미나 소결체를 이용한 스퍼터링 타겟. 이 스퍼터링 타겟을 이용하면, 뛰어난 절연 내성과 균질성을 가지는 스퍼터막을 얻을 수 있다, An alumina sintered body having a purity of 99.99% or more, a relative density of 98% or more, and an average crystal grain size of less than 5 占 퐉 or a purity of 99.999% or more and a relative density of 98% Sputtering target using alumina sintered body. By using this sputtering target, a sputter film having excellent insulation resistance and homogeneity can be obtained.

Optical recording medium

An optical recording medium having two adhered substrates one of which has a magneto-optic recording layer thereon and the other of which has at least one dielectric layer thereon so as to improve stability and weatherability. The dielectric layer is a transparent oxide, a nitride or a mixture of an oxide and a nitride and has a thickness between about 30Å and 10 μm. In an especially preferred embodiment, neither substrate is provided with any layers in either the internal area or the circumferential area of a disk and the substrates themselves are exposed and adhered together with adhesive.

라벨층이 증착된 광 디스크 제조법

내용 없음.

Multi-layer structure photo information media

광디스크, 광테이프, 광카드 등의 광정보매체에 관한 것으로서, 평면적으로 고기록밀도이고 또한 3차원적인 기록재생이 가능하고, 저렴하게 제작가능한 다층구조 광정보매체를 제공하기 위해, 평면정보영역을 각각 2면∼4면 마련한 제1 및 제2 기판을 제1 및 제2 기판이 각각 바깥쪽으로 위치하도록 배치된 구조를 갖고, 제1 및 제2 기판의 두께를 각각 0.52mm이상, 0.65mm이하로 한 다층구조 광정보매체는 예를 들면 각각의 기판 또는 투명한 물질층의 표면에 마련된 오목볼록과 그 위에 마련된 반사층으로 이루어지고, 기판에서 가장 떨어진 위치의 평면정보영역은 반투명막으로 바꾸어서 반사층을 갖고, 기판에서 가장 떨어진 위치의 평면정보영역은 기록층과 기록층상에 마련된 반사층으로 이루어지는 것이어도 좋다. In order to provide a multi-layered optical information medium such as an optical disc, an optical tape, and an optical card, which has a high recording density and can be recorded and reproduced in three dimensions in a planar manner, Wherein the first and second substrates are respectively arranged so that the first and second substrates are respectively positioned outwardly and the thicknesses of the first and second substrates are respectively set to 0.52 mm or more and 0.65 mm or less For example, a multi-layered optical information medium comprises concave convexities formed on the surface of each substrate or a transparent material layer and a reflective layer provided thereon, and a planar information region at the farthest position from the substrate is changed to a translucent film, The planar information region at the farthest position from the substrate may be a recording layer and a reflective layer provided on the recording layer. 이러한 것에 의해 에러 없이 정보를 재생할 수 있는 효과가 있다. Thereby, there is an effect that information can be reproduced without error.

Small-sized optical memory device and information processing apparatus utilizing cylindrically shaped information recording medium

An optical memory device includes a cylindrically-shaped optical information recording medium and at least one optical head disposed around the information recording medium for irradiating the information recording medium with a light spot for recording or reproduction of information. The optical head has light spot moving means incorporated therein for the irradiation position of the light spot. The recording or reproduction of information is achieved by causing the light spot moving means to perform tracking control so that the light spot follows a desired track in an area within a range of movement of the light spot by the light spot moving means (or an infromation recording zone) in a state in which the relative positional relationship between the optical head and the cylindrically-shaped information recording medium in the direction parallel to the direction of the rotation axis of the information recording medium is fixed, with the optical head being not moved. The device can be constructed so that the position of either the optical head or the cylindrically-shaped information recording medium relative to the other in the direction parallel to the direction of the rotation axis of the information recording medium is mechanically moved, thereby making it possible to cahnge the information recording zone in the range of movement of the light spot by the light spot moving means to another information recording zone.

Method of producing an optical disk having an integrated label layer

An inventive method for producing an optical tape comprises the steps of sequentially depositing a label layer and a reflection layer on a substrate. The label layer and the reflection layer has a same reflexibility in a predetermined wavelength range of a laser beam, thereby providing a label image to a user as well as capability of information recording.

Multilayer optical information medium

A multilayer optical information medium provided with structure in which first and second substrates respectively provided with two to four layers of planar information areas are respectively arranged outside wherein the thickness of the above-described first and second substrates is set in the range of 0.52 to 0.65 mm. The above-described planar information area consists of embossed pits provided, for example on the surface of respective substrates or on the surface of a layer formed by transparent material and a semi-reflective layer provided on the embossed pits. A planar information area arranged in the farthest position from respective substrates is provided with a reflective layer in place of the above-described semi-reflective layer. The planar information area arranged in the farthest position from respective substrates may be constituted by a recording layer and a reflective layer provided on the recording layer.

Recording medium, recording and reproducing method and recording and reproducing apparatus

一种记录方法，随着折射率、消光系数、透射系数或反射系数的一次变化，信息被记录到例如象光透射基片(1)或光透射防护膜这样的光透射材料上。

Optical head for near field recording/reading and method for manufacturing thereof

슬라이더 상에 표면광 레이저 및 광검출기를 형성하고, 그 위에 렌즈층과 광로제어층 및/또는 코일부재를 박막적층 기술을 응용하여 직접적으로 성형한 구조를 갖는 근접장 기록재생용 광헤드 및 그 제조방법이 개시되어 있다. An optical head for near field recording and reproduction having a structure in which a surface light laser and a photodetector are formed on a slider, and a lens layer, an optical path control layer, and / or a coil member are directly formed by applying a thin film lamination technique, and a manufacturing method thereof. Is disclosed. 이러한 근접장 기록재생용 광헤드는 기록재생을 위한 광학계가 슬라이더에 일체화되어 있으므로, 광헤드의 크기가 작을 뿐만 아니라, 종래의 슬라이더와 별도로 된 큰 부피의 광학계를 제거되어, 광헤드의 동적 특성이 개선되고 시크타임(seek time)을 줄일 수 있어서, 마이크로 기록재생장치에 적합하다. Since the optical system for recording and reproducing is integrated with the slider, the optical head for recording and reproducing the near field is not only small in size, but also eliminates a large volume of optical system separate from the conventional slider, thereby improving the dynamic characteristics of the optical head. In addition, the seek time can be reduced, which is suitable for the micro recording and reproducing apparatus.

光磁気記録体

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Optical recording medium, disc system and apparatus

투광성 커버(41)를 구비하고 있는 광자기 디스크(40)와, 기록 및/또는 재생을 위해 레이저빔을 광자기 디스크(40)의 기록 자성층(43)에 집속하는 대물렌즈(2)와 광학유리(8)에 코일패턴(7)을 형성하여 이루어지는 자계 발생장치(9)를 구비하는 광자기 디스크 시스템이 개시되어 있다. 이 광자기 디스크 시스템에 의하면, 상기 투광성 커버(41)의 두께 t 2 를 0.6∼0.1mm, 상기 대물렌즈(2)의 개구수(NA)를 0.55∼0.70으로 함으로써, 보다 고밀도의 기록 및/또는 재생을 할 수 있다. The magneto-optical disk 40 having a translucent cover 41, the objective lens 2 and the optical glass for focusing the laser beam on the recording magnetic layer 43 of the magneto-optical disk 40 for recording and / or reproduction. Disclosed is a magneto-optical disk system including a magnetic field generator (9) formed by forming a coil pattern (7) at (8). According to this magneto-optical disk system, recording density and / or higher density are achieved by setting the thickness t 2 of the transparent cover 41 to 0.6 to 0.1 mm and the numerical aperture NA of the objective lens 2 to 0.55 to 0.70. You can play.

Reproducing method for magneto-optical recording medium and magneto-optical recording medium

(57)【要約】 【課題】面内磁化状態にある部分の記録磁区情報がマス クされ、集光された光ビームのビーム径内に隣接する記 録ビットが入る場合においても、高い信号品質で個々の 記録ビットを分離して再生することを可能とする。 【解決手段】本来垂直磁化状態である再生層１と、記録 層４とが静磁結合してなる光磁気記録媒体であって、再 生層１に隣接して面内磁化膜２が形成され、再生層１と 面内磁化膜２とが交換結合することにより、再生層１に 面内磁化マスクを形成する。小さい記録ビット径、及び 小さい記録ビット間隔で記録再生を行った場合において も、十分な信号品質を得ることが可能な超解像光磁気記 録媒体を実現する。

High numerical aperture optical focusing device for use in data storage systems

A near-field optical or MO data storage system uses an optical focusing device for focusing an incident optical beam to a small size focal spot. The optical focusing device includes an optically transmissive body which is defined by a generally flat incident surface, a flat, bottom surface disposed opposite and parallel to the incident surface, and a reflective side coated with a reflective layer for reflecting the optical beam through the body toward the bottom surface. The bottom surface defines a focal plane on which the focal spot is formed, for generating a localized evanescent field. The focal spot is located along a central axis P, in very close proximity to the data storage disk, such that the localized evanescent field interacts with the disk, for enabling data to be transduced to and from the disk by effecting near field coupling. An electro-magnetic coil or coil assembly, can optionally be formed on the bottom surface, co-axially with the focal spot, for generating a desired write magnetic field. The reflective side of the optical focusing device preferably has a parabola shaped curvature, but other shapes can alternatively be selected. For example, the side curvature can have a tilted parabola shape.

Optical magnetic recording device

내용 없음. No content.

Super-resolution Parabolic Lens

본 발명은, 광의 파장, 입사빔의 직경이 일정할 때, 광의 수렴각을 크게하고, 스팟이 형성되는 매질의 굴절률을 증기시킬 수 있도록 하는 초고분해능 포물선형 렌즈를 제공하는데 그 목적이 있다. SUMMARY OF THE INVENTION An object of the present invention is to provide an ultra-high resolution parabolic lens for increasing the convergence angle of light when the wavelength of light and the diameter of the incident beam are constant, and allowing the refractive index of the medium on which the spot is formed to be vaporized. 본 발명에 의하면, 외부로부터 입사되는 광을 집광 시키기 위한 집광 렌즈에 있어서, 상기 렌즈의 한면은 평면이고, 다른 한 면은 포물선 형태의 곡선면을 형성하고 있으며, 상기 렌즈의 곡선면은 정점을 제외한 다른 부분이 반사 코팅되어 있으며, 상기 렌즈의 평면에 평행광이 입사될 경우에, 상기 렌즈의 내부에서 몇번의 반사를 거친 후에, 코팅이 없는 상기 렌즈의 정점을 통하여 외부의 물체에 전달되는 것을 특징으로 하는 초고분해능 포물선형 렌즈가 제공된다. According to the present invention, in a condensing lens for condensing light incident from the outside, one side of the lens is a plane, the other side forms a parabolic curved surface, the curved surface of the lens except the vertex The other part is reflective-coated, and when parallel light enters the plane of the lens, after several reflections inside the lens, it is transmitted to an external object through the vertex of the uncoated lens. An ultra high resolution parabolic lens is provided.

Opto-magnetic recording/reproducing apparatus

PURPOSE: A device for recording/reproducing an optical magnet is provided to reduce the number of optical aperture by enhancing one end portion of an optic fiber by using an adjacent window explorer structure and to reduce an access time by making a portion of one end of the optic fiber be contacted and slid to a recording medium. CONSTITUTION: A movable unit(300) is rotatably arranged at a recording medium(40), and makes a light provided from a fixing optical system(100) be focused on a predetermined position of the recording medium(40). An optic fiber(200) both ends thereof are connected to the fixing optical system(100) and the movable unit(300), respectively, and transmits a light. The fixing optical system(100) is fixed to a main body, and creates and irradiates a light being demanded for recording/reproducing information in the recording medium(40). The optic fiber(200) comprises a core and a clad having a different refraction rate to that of the core. The clad surrounds the core, and inputted light is guided through the core. The movable unit(300) makes the light guided through the optic fiber(200) which was irradiated in the fixing optical system(100) be focused on a predetermined position of the recording medium(40).

Magnetic recording media and magnetic memory apparatus

一种磁记录介质，依次包括基板、底层、及具有L1 0 型结晶结构的合金进行了(001)配向的磁性层。所述底层包括第1底层。所述第1底层是含有以W为主成分的材料和氮化物并且所述氮化物的含量在1mol％～80mol％的范围内的结晶质层。所述氮化物包括从Al、B、Si、Ti、Zr、Hf、V、Nb、Ta、Cr、Mo及W组成的组中选择的1种以上的元素的氮化物。

Magneto-optical recording medium and reproducing method therefor

본 발명은 기체와, 기체 상에 형성되어 실온으로부터 퀴리 온도까지 수직 자화를 나타내는 독출층과, 독출층 상에 형성되어 실온에서 대부분 면내 자화를 나타내고, 실온 이상의 온도에서 면내 자화에서 수직 자화로 이행하는 전사층과 및 전자층 상에 형성되어 실온으로부터 퀴리 온도까기 수직 자화를 나타내는 기록층을 구비한 광자기 기록 매체 및 그 재생 방법에 관한 것이다. 독출층 상에 광 스폿 지름보다 작은 기록 비트의 재생을 행할 수 있고, 또 잡음이 적게 되어 신호 품질이 향상된다. The present invention provides a gas, a read layer formed on the gas and exhibiting vertical magnetization from room temperature to Curie temperature, and formed on the read layer to exhibit mostly in-plane magnetization at room temperature, and transition from in-plane magnetization to vertical magnetization at a temperature above room temperature. A magneto-optical recording medium having a transfer layer and a recording layer formed on the electron layer and exhibiting vertical magnetization from room temperature to Curie temperature and a reproduction method thereof. It is possible to reproduce recording bits smaller than the optical spot diameter on the read layer, and the noise is reduced, so that the signal quality is improved.

Photomagnetic recording medium

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Photomagnetic recording medium

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Optical information recording medium and optical information recording, reproducing and erasing method

강성 기판, 강성 기판상에 형성되고 레이저광에 의해 광학적으로 검출되는 정보를 기록하는 기록막 혹은 강성 기판상에 형성되고 광학적으로 검출되는 정보를 기록하는 요철 피트, 기록막상에 형성된 투명 박판을 갖는 광정보기록매체가 개시된다. 광정보기록, 재생 및 소거방법에 있어서, 레이저광에 의해 물리적 혹은 화학적으로 변화되는 기록부재가 강성기판상에 형성되어 있는 광정보기록매체를 제공하는 단계를 구비하고, 정보의 기록, 재생 및 소거가 강성 기판상에 형성된 투명 박판을 통해 강성 기판에 입사하는 레이저광에 의해 상기 기록부재를 통해 행해지는 것을 특징으로 하는 광정보기록, 재생 및 소거방법이 또한 개시된다.

Sealing compound utilizing water swelling rubber and its manufacture

(57)【要約】 【課題】 高密度光記録媒体であって、安定なトラッキ ング特性を有し、ピット信号再生特性も良好な高密度記 録媒体を提供する。 【解決手段】 平坦な底面を有する溝部及び平坦な溝間 部を設けた透明基板上に記録層を設け、溝部又は溝間部 のいずれか一方にのみ基板側からレーザー光を照射して 記録又は再生を行う光磁気記録媒体であって、再生光に おける反射光の基板による位相差α及び透明基板上の層 構成による位相差βの合計α＋βを、溝部及び溝間部か らの反射光の干渉による位相差γに対して逆符号とした ことを特徴とする光磁気記録媒体。

Manufacture of heat generating vortex chamber for internal combustion engine

(57)【要約】 【課題】 高密度でデータを記録するために好適な光デ ィスク及びこの光ディスクの為の光ディスク装置を提供 する 【解決手段】 光ディスクＤは、ランド及びグルーブを 記録トラックとしている。各トラックは、１のアドレス セグメントと４５のデータセグメントからなる。アドレ スセグメントは片側にウォブルが施されている。データ セグメントはＤＣグルーブとなっている。アドレスセグ メントには、ＳＹＮＣとフレームアドレスとトラックア ドレスとＣＲＣとからなるアドレス情報と、チルトパタ ーンと、クロックマークとが記録される。クロックマー クは、マークの前後で反射光の光量変化が生じるように なっており、チルトパターンは、他の部分とトラックピ ッチが変えられている。データセグメントには、光磁気 記録でデータが記録される。

Manufacture of rugged substrate

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Magnetic head device for magneto-optical recording

광자기 기록용 자기 헤드 장치는, 코일이 부착된 보빈과 자기 코어를 가진 자기 헤드 소자, 광자기 디스크에 미끄럼 접촉되는 미끄럼 접촉부를 갖고 자기 헤드 소자가 부착된 미끄럼에 접촉 부재, 그 말단부에 회전 변위를 위한 미끄럼 접촉 부재가 부착되고 광자기 디스크의 반경 방향으로 이동 가능하게 지지된 가동 베이스에 의해 회전 변위를 위해 지지된 헤드 지지체를 포함한다. 상기 미끄럼 접촉 부재는 광자기 디스크의 회전 방향에 대향인 그 일단부상에 형성된 미끄럼 접촉부를 갖는다. 제1미끄럼 접촉 간극은 광자기 디스크에 대향인 자기 헤드 소자의 말단부상의 외주부에 형성되고, 제2미끄럼 접촉 간극은 미끄럼 접촉 부재가 광자기 디스크상에 이동될 때 광자기 디스크의 외주부쪽으로 그 측면상에 형성된다.

Amorphous alloy thin film

Magneto-optical recording medium and recording method

A magneto-optical recording medium and recording/reproducing method for the same

본 발명은 투광성 기체, 기체상에 형성되며, 실온에서 면내 자기 이방성이 우위인 면내 자화를 나타내는 한편, 온도 상승에 따라 수직 자기 이방성이 우위인 수직 자화로 이행하는 독출층 및 독출층 위에 형성되며, 정보를 광 자기 기록하는 기록층을 가지고 있는 광 자기 기록 매체, 이 광 자기 기록 매체에 대한 기록 재생 방법 및 이 광 자기 기록 매체에 적합한 광 헤드에 관한 것이다. 이들 구성에 의하면, 고밀도로 정보를 기록할 수 있고, 그 정보를 재생할 수 있다. The present invention is formed on a light-transmitting gas and a gas phase, and is formed on a read layer and a read layer which exhibit in-plane magnetization with superior in-plane magnetic anisotropy at room temperature, and shift to vertical magnetization with superior vertical magnetic anisotropy with increasing temperature, A magneto-optical recording medium having a recording layer for magneto-optical recording information, a recording / reproducing method for the magneto-optical recording medium, and an optical head suitable for the magneto-optical recording medium. According to these configurations, information can be recorded at a high density, and the information can be reproduced.

Optical recording media

기록 및 재생시 재생층의 열화를 감소시킬 수 있는 광 기록 매체에 관한 것으로, 기판상에 형성된 재생층과 기록층 사이에 광투과율 및 내열성이 우수하고 열전도율이 좋은 SiC, DLC(Diamond Like Carbone)등으로 이루어진 열전도층을 형성함으로써, 재생층에 발생하는 열화를 감소시켜 기록 매체의 특성을 향상시킨다. The present invention relates to an optical recording medium capable of reducing the deterioration of a reproduction layer during recording and reproducing, and includes SiC, DLC (Diamond Like Carbone), etc. having excellent light transmittance and heat resistance and good thermal conductivity between a reproducing layer and a recording layer formed on a substrate. By forming the heat conductive layer made of the above, deterioration occurring in the reproduction layer is reduced to improve the characteristics of the recording medium.

Information recording/reproducing device

본 발명의 수직 자기 기록막 상의 반전 자구에 의해 정보를 보유하는 기록 매체를 이용한 정보 기록 재생 장치는 상기 기록 매체에 전자 에너지 또는 광을 상기 기록 매체 상에 조사하는 수단과, 상기 기록 매체에 대해 상기 조사 수단과 동일 측에 위치하고, 상기 기록 매체로부터의 누설 자속을 검출하는 자속 검출 수단을 포함한다. 이로써, 기록 매체의 양면 기록이 가능하다.

Optical recording medium

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Information recording medium, information recording device and recording method

磁気記録媒体１０は基板１上に第１磁性膜２及び第２磁性膜４を備える。第１磁性膜を記録再生に好適な磁性材料から構成し、第２磁性膜を熱安定性に優れるフェリ磁性材料から構成する。磁気ヘッド５３により第２磁性膜に情報を記録する。第２磁性膜への情報記録後、レーザー光照射により第１磁性膜を加熱して保磁力を低下させ、第２磁性膜の情報を第１磁性膜に磁気転写させる。第１磁性膜は熱安定性に優れるので記録情報が安定化される。かかる磁気記録媒体は、熱揺らぎに強く、高い信頼性を有する。特に５０Ｇｂ／ｉｎｃｈ２の超高密度磁気記録により形成される０．１μｍ程度の磁区を安定に存在させることが可能である。 The magnetic recording medium 10 includes a first magnetic film 2 and a second magnetic film 4 on a substrate 1. The first magnetic film is made of a magnetic material suitable for recording and reproduction, and the second magnetic film is made of a ferrimagnetic material having excellent thermal stability. Information is recorded on the second magnetic film by the magnetic head 53. After recording the information on the second magnetic film, the first magnetic film is heated by laser light irradiation to reduce the coercive force, and the information on the second magnetic film is magnetically transferred to the first magnetic film. Since the first magnetic film is excellent in thermal stability, recorded information is stabilized. Such a magnetic recording medium is resistant to thermal fluctuations and has high reliability. In particular, a magnetic domain of about 0.1 μm formed by ultra-high density magnetic recording of 50 Gb / inch 2 can be stably present.

Magneto-optical material and manufacturing method thereof

Magneto-optical recording medium and its manufacturing method

Optical recording material

내용 없음. No content.

Optical storage element

Recording medium capable of recording a first data-type and a second data-type, playback method and playback device for playing back from the recording medium, and recording device for recording......

本发明涉及录有音频数据和一般数据的记录介质，通过特别简单的控制区域对每个控制区提供数据，不必执行复杂控制区域的编辑且不需存储区域作为编辑工作区域；重放设备，其重放能够达到而没有把简单控制区域与用于音频和一般数据的控制区相混，在简单控制区域还记录复制保护信息，从已经非法复制的记录介质上重放操作将是不可能的；记录设备，在记录介质上执行数据更新时，用于更新各控制区域的记录设备。

Photomagnetic recording medium

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Photomagnetic recording medium

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Slide type magnetic head for magneto-optical recording

광자기기록용 슬라이드형 자기헤드에 있어서, 광자기디스크의 기록재생보증영역의 이용율의 확대를 도모한다. 헤드소자와 광자기디스크(1)에 접촉슬라이드하는 슬라이드부(37)를 가진 헤드본체(32)를 구비하고, 슬라이드부(37)를 헤드소자의 중심자극코어(14a)에 대하여 광자기디스크(1)의 내주측에 배설하여 중심자극코어(14a)가 디스크(1)의 기록재생보증영역의 외주지점 A에 위치해도 슬라이드부(39)가 디스크최외주의 융기부에 충돌하지 않도록 구성한다.

Magneto-optical recording medium

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Frequency demodulating circuit, optical disk apparatus thereof and preformating device

A frequency demodulating circuit for demodulating a frequency-modulated signal expressing digital data. The circuit includes a waveform shaping circuit for acquiring a binary signal from the frequency-modulated signal and a detector for decoding the binary signal and response to clock signals to obtain the digital data. A circuit also includes a clock signal generating circuit for generating the clock signals which have a frequency of the frequency-modulated signal corresponding to “one” of the digital data and a frequency higher than the frequency of the frequency-modulated signal by a multiple, which corresponds to a “zero” of the digital data.

Apparatus and method for manufacturing disc-shaped recording medium

스핀 피복법에 의해 원반형 기록 매체 상에 도포막을 인가할 때, 디스크 기판의 외주부와 내주부 사이의 막 두께 차가 억제되어야 한다. 이러한 목적으로, 회전 디스크의 중심축이 원반형 기록 매체를 설치한 턴테이블에 형성된 오목부 내에 삽입되고 원반형 기록 매체와 회전 디스크가 회전 구동될 때 원반형 기록 매체와 회전 디스크의 중심부로 도포액이 공급된다. 이 도포액은 회전에 의해 야기된 원심력 하에 연신되어 원반형 기록 매체 상에 도포막을 형성한다. When applying the coating film on the disc shaped recording medium by the spin coating method, the film thickness difference between the outer peripheral part and the inner peripheral part of the disk substrate should be suppressed. For this purpose, the coating liquid is supplied to the center of the disk-shaped recording medium and the rotating disk when the central axis of the rotating disk is inserted into the recess formed in the turntable provided with the disk-shaped recording medium and the disk-shaped recording medium and the rotating disk are rotationally driven. This coating liquid is drawn under centrifugal force caused by rotation to form a coating film on the disc shaped recording medium.

An magneto-optical disk structure

내용 없음. No content.

Optical disc and disc cartridge

광디스크 및 광디스크가 장치된 디스크카트리지. 디스크카트리지는 디스크의 두께에 대한 단면이 비대칭인 디스크를 장치한다. 디스크카트리지는 카트리지본체부와 개방/밀폐장치를 포함한다. 카트리지본체부는 디스크를 삽입 또는 방출하는 구멍을 갖는다. 카트리지본체부는 디스크의 기록 및/또는 재생이 가능한 디스크의 정상상태에서만 디스크를 장치하도록 구성된다. 개방/밀폐장치는 구멍을 열거나 닫는다. An optical disc and a disc cartridge equipped with an optical disc. The disc cartridge mounts a disc that is asymmetric in cross section with respect to the thickness of the disc. The disc cartridge includes a cartridge body portion and an opening / closing device. The cartridge body portion has a hole for inserting or ejecting the disk. The cartridge body portion is configured to mount the disc only in a normal state of the disc capable of recording and / or playing back the disc. The open / close device opens or closes the hole.

Magnetic head device for magnetro-optical recording

一种用于磁光记录的磁头装置，包括一个具有磁芯和装有线圈的线轴的磁头件，一个装有磁头件并具有与磁光盘滑动接触的滑动接触部分的滑动接触件，和一种通过磁光盘的径向可移动地支承的可移动的底座支承的用于转动偏转的并在其远端上带有用于转动偏转的滑动接触件的头部支承件。滑动接触件在其与磁光盘的转动方向有关的一端上有滑动接触部分。第一滑动接触间隙是在面对磁光盘的磁头件的远端上的外周边上形成，而第二滑动接触间隙是在朝磁光盘的外周边的它的一个横向侧边上形成，这是当滑动接触件在磁光盘上滑动时。

Optical magnetic recording medium

The optical magnetic recording medium is made by laminating the first dielectric film, platinum film, the first recording film with thickness of 137A at wavelength of 355nm, chrome film, the second recording film with thickness of 365A at wavelength of 730nm, the second dielectric film and reflection film on plate. The recording films are prepared by forming the superlattice form of dysprosium and Cobalt. And they have different thickness to regenerate at different wavelength regions.

Photomagnetic recording medium

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Optical information recording medium, manufacturing method therefor, manufacturing apparatus therefor, and optical information recording and reproducing apparatus

在具有至少两个信息层的光学信息记录介质中，在第一基片(1)的一个表面上设有用于跟踪的导槽，或对应信息信号的采样槽或是信息槽。用薄膜构成的第一信息层(2)被设在第二基片(3)的一个表面上，用于反射入射到第一基片(1)上的一部分光束(7)，并且允许一部分光束(7)穿透。用于跟踪的导槽或对应信息信号的信息槽被设在第二基片(3)的一个表面上。在第二基片(3)的一个表面上设有第二信息层(4)，其反射率比第一信息层(2)高。在第一信息层(2)与第二信息层(4)之间设有透明的分隔层(5)，用于把第一信息层(2)和第二信息层(4)按照彼此分开的预定距离定位。

Method for washing recording medium, and production method

(57)【要約】 【課題】 テクスチャー加工後磁性膜成膜前に付着する 微細異物を有効に除去する洗浄方法を提供すること。 【解決手段】 カルボン酸又はＬ−アスコルビン酸を含 みpH５．０以下の水溶液で洗浄（スクラブ洗浄、スピン 乾燥する。必要に応じて成膜直前まで同様の溶中で保存 する。

Magneto-optical recording device

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Photomagnetic recording medium

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Vinyl cyclohexane-based block copolymers

本发明涉及主要基于乙烯基环己烷的嵌段共聚物和生产它的方法。该嵌段共聚物能够利用挤塑或注塑法加工成成形体。所获得的成形体的特征在于高的热稳定性，良好的机械性能，在可见光和近紫外光谱中的高透明度，尤其低的双折射率和和吸水性。

Magneto-optical recording medium and magneto-optical recording method for said medium

Magneto-optical head device and recording / reproducing device

Information reproducer, information recorder and reference mark detection circuit

본 발명에 따른 정보 재생 장치는 광 디스크로부터의 보다 정확하고 또한 확실한 데이타 재생을 실현하기 위한 것이며, 광학 헤드(500)에서 판독된 워블 신호를 검출하는 워블 검출 회로(130)와, 워블 신호를 체배하여 동기 신호(SS0)를 작성하는 PLL 회로(150)와, 순차 동기 신호(SS0)를 지연시켜서 위상이 다른 복수의 동기 신호(SS0 ∼ SS10)를 생성하는 지연 회로(170)와, 재생 신호 중 특정 패턴을 검출하는 특정 패턴 검출 회로(190)와, 검출한 특정 패턴에 대하여, 프리셋트 회로(180)에서 미리 셋트된 위상차를 갖는 동기 신호를 1개 선택하여 레이저 구동 회로(230)와 신호 복조 회로(90)로 공급하는 전환기(210)를 구비한다. The information reproducing apparatus according to the present invention is for realizing more accurate and reliable data reproduction from the optical disc, and multiplying the wobble detection circuit 130 for detecting the wobble signal read by the optical head 500, and the wobble signal. Of the PLL circuit 150 for generating the synchronization signal SS0, the delay circuit 170 for delaying the sequential synchronization signal SS0, and generating a plurality of synchronization signals SS0 to SS10 having different phases, and the reproduction signal. A specific pattern detection circuit 190 for detecting a specific pattern and one synchronization signal having a phase difference preset in the preset circuit 180 with respect to the detected specific pattern are selected to demodulate the signal with the laser driving circuit 230. The converter 210 is supplied to the circuit 90.

Magneto-optical storage element

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Magneto-optical recording medium

Label disc deposited optical disk manufacturing method

본 발명은 광 디스크 제조방법을 개시한다. 일반적인 광 디스크의 표면에는 각종 기록 및 상표등을 기록한 라벨층을 부착하게 되는 데 종래에는 라벨을 광 디스크의 표면에 직접 부착하여 왔다. 그러나 이와같이 레벌을 광 디스크의 표면에 직접 부착함에 있어서는 불균일한 라벨의 부착에 의한 광 픽업에러가 발생되고 손쉽게 디스크 표면으로 부터 이탈되어 제품의 신뢰감을 떨어뜨리는 요인이 되었다. 이를 위하여 본 발명은, 광 디스크의 표면에 직접 증착에 의해 라벨층을 형성함으로써 전술한 문제점을 해결하도록 하였다.

Poly (arylene ether) information storage medium

プラスチック樹脂部分を含む基板であって、プラスチック樹脂部分がポリ（アリーレンエーテル）及びスチレン材料を含み（又はポリ（アリーレンエーテル）及びスチレン材料の反応生成物を含み）、スチレン材料がポリスチレン、スチレン系コポリマー、並びに上述のスチレン材料の１種以上を含む反応生成物及び組合せからなる群から選択される基板と、基板上のデータ層とを含んでなる記憶媒体。ポリ（アリーレンエーテル）は約５０００〜約５００００ＡＭＵの重量平均分子量を有し、ポリスチレンは約１００００〜約３０００００ＡＭＵの重量平均分子量を有する。データ層は、エネルギー場によって少なくとも部分的に読出し、書込み又はこれらの組合せが可能である。さらに、エネルギー場が記憶媒体に接触する場合、エネルギー場はデータ層に入射してから基板に入射し得る。

Storage medium for data

This disclosure relates to a data storage medium, and in particular to a data storage medium comprising at least one high modulus layer. An asymmetric optical storage medium can comprise: at least one substrate layer comprising polyarylene ether, at least one high modulus layer comprising a thermoset, and at least one data layer disposed between the modulus layer and the substrate layer.

Storage medium for data

This disclosure relates to a data storage medium, and in particular to a data storage medium comprising at least one high modulus layer. In one embodiment, an asymmetric optical storage medium can comprise: a substrate layer comprising polyarylene ether, a high modulus layer comprising a thermoset, and a data layer disposed between the modulus layer and the substrate layer. The high modulus layer has a tensile modulus that is greater than a substrate layer tensile modulus. In another embodiment, an asymmetric optical storage medium can comprise: a substrate layer comprising polyarylene ether and having surface features and a high modulus layer disposed on the side of the substrate comprising the surface features. The surface features can comprise pits. The high modulus layer can comprise a thermoset, and can have a tensile modulus that is greater than a substrate layer tensile modulus.

Information processing apparatus

본 발명은 디스크 상의 기록 매체를 회전시키는 회전 구동 수단, 회전 구동수단에 의해 회전된 디스크상의 기록 매체상에 부상하면서 기록 매체에 기록된 정보를 재생하는 부상형 헤드 및 부상형 헤드를 지지하기 위해 탄성체로 이루어지는 서스펜션을 포함하고, 상기 부상형 헤드가 회전한 디스크상의 기록 매체의 표면 부근에 발생하는 공기류에서 부력을 받는 슬라이더를 가지고, 슬라이더가 디스크상의 기록매체의 외주 부근의 융기에 접촉하기 어렵게 되도록 슬라이더의 디스크 상의 기록 매체의 외주측에는 절개부가 설치되어 있는 정보 재생 장치에 관한 것이다. 슬라이더가 디스크상의 기록 매체의 외주부근의 융기에 접촉하기 어려워지므로 디스크상의 기록 매체의 기억 용량을 유효하게 이용할 수 있다. The present invention provides a rotary drive means for rotating a recording medium on a disk, a floating head for reproducing information recorded on the recording medium while floating on the recording medium on the disk rotated by the rotation driving means, and an elastic body for supporting the floating head. And a suspension which is buoyant in the airflow generated near the surface of the recording medium on the disk on which the floating head is rotated, so that the slider is less likely to contact the ridges near the outer circumference of the recording medium on the disk. The information reproducing apparatus is provided with a cutout on the outer circumferential side of the recording medium on the disc of the slider. Since the slider is less likely to come in contact with the ridges near the outer periphery of the recording medium on the disc, the storage capacity of the recording medium on the disc can be effectively used.

Magneto-optical disk and method for manufacturing the same

낮은 레이저 기록 파워로도 효율적인 데이터 기록을 수행할 수 있는 광자기 디스크 및 그 제조방법에 관한 것으로, 기판상에 제 1 유전체층을 형성하고, N 가스와 Ar 가스를 함께 사용하는 반응성 스퍼터링 방법이나 또는 N, P, S, Se, Br, Te, I 중 어느 한 물질이 소량 첨가된 재생층용 합금 타겟을 사용하는 스퍼터링 방법으로 제 1 유전체층상에 재생층을 형성한 다음, 재생층상에 제 2 유전체층, 기록층, 보호층을 순차적으로 형성함으로써, 낮은 레이저 기록 파워로도 효율적으로 정보를 기록할 수 있으므로 경제적으로 잇점이 있다.

Magneto-optical recording medium

(57)【要約】 【課題】 再生信号の波形の両エッジの傾斜を急峻に、 且つ、対称に近づける。 【解決手段】 光磁気ディスク１は、基板１１上にＳｉ Ｎ下地層１２、再生層１３、制御層１４、記録層１５、 ＳｉＮ中間層１６、第１補助層１７、第２補助層１８、 第３補助層１９及びＳｉＮ保護層２０を備えて構成され ている。記録層１５の基板１１と反対の側に、静磁場を 発生させるための前記磁場発生層である第１補助層１ ７、第２補助層１８及び第３補助層１９が、ＳｉＮ中間 層１６を隔てて設けられている。

Magneto-optical recording medium, and reproducing method and reproducing device therefor

(57)【要約】 【課題】 複数の記録層を有し、高密度記録及びその再 生が可能な光磁気記録媒体並びにその再生方法及び装置 を提供する。 【解決手段】 光磁気記録媒体は複数の記録層と複数の 再生層とを有する。複数の再生層はそれぞれ異なる波長 の再生光により再生される。再生時に各記録層に記録さ れた磁区は各記録層に積層された再生層に転写され、外 部磁界の下で拡大されて再生される。複数の記録層毎に 情報を記録再生することができるために、記録密度を向 上させることができる。また、再生信号を磁区拡大によ り増幅することができるためにＣ／Ｎを向上することが できる。

Resin composition for optical recording medium

Magneto-optical recording medium

(57)【要約】 【課題】 厚い磁性層を有していても良好なＬ＆Ｇ記録 再生が可能な光磁気記録媒体を提供する。 【解決手段】 透明な基板上に凹凸溝を有し、該凹凸溝 の凹部及び凸部がいずれも実質的に平坦な領域を有し、 かつその両方に記録を行う媒体であって、該基板上に少 なくとも誘電体よりなる干渉層及び希土類金属と遷移金 属のアモルファス合金磁性体よりなる厚さ５０ｎｍ以上 の磁性層がこの順に設けられ、基板の屈折率、干渉層の 屈折率、干渉層の膜厚が特定の関係を満足する光磁気記 録媒体。

Laminate structure and production method thereof

합금기재상에, 스파터링에 의해 형성된 탄화규소질 피복층을 가지며, 상기 탄화규소질 피복층의 광투과율이 70%이상인 것을 특징으로 하는 적층구조체이다. 합금기재가 자성합금 또는 상변화합금인 태양, 탄화규소질 피복층의 표면에 존재하는 불순물의 비율이 1.0×10 12 atoms/cm 2 이하인 태양, 탄화규소질 피복층의 두께가 10∼100nm인 태양 등이 바람직하다. 이러한 적층구조체는, 내산화성, 내염소성, 내습성, 고굴절율, 고광투과율 등이 뛰어난 탄화규소질 피복층을 가지므로, 특히 CD-RW, DVD-RAM등의 광디스크의 기록매체에 바람직하다. A laminated structure having a silicon carbide coating layer formed by spattering on an alloy base material, wherein the light transmittance of the silicon carbide coating layer is 70% or more. Suns having alloy bases of magnetic alloys or phase change alloys, suns having an impurity ratio of 1.0 × 10 12 atoms / cm 2 or less on the surface of the silicon carbide coating layer, and suns having a thickness of 10-100 nm of the silicon carbide coating layer; desirable. Such a laminated structure has a silicon carbide coating layer having excellent oxidation resistance, chlorine resistance, moisture resistance, high refractive index, high light transmittance, and the like, and therefore, it is particularly preferable for recording media of optical discs such as CD-RW and DVD-RAM.