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| Number | Title | Issue Date |
| 7333402 | Magneto-optical head support structures A suspension supporting a magnetic head is formed by a member different in material from gimbals. As a result, the characteristic of the gimbals minimizing electric power loss in supplying current while sufficiently elastically holding the magnetic head can be compa... | 02/19/2008 |
| 7196975 | Magneto-optical disk with protective layer, and optical disk device On a pit information surface (22d) of a read-only optical disk (22), a protective layer (22f) suited for a floating-type or a sliding-type magnetic head (3) used for a magnetic field modulation type magneto-optical disk is f... | 03/27/2007 |
| 7088643 | Magneto optical disc drive having insertion restricting and locking portions A recording and/or reproducing apparatus for recording and/or reproducing signals on and/or from a recording medium includes a recording and/or reproducing portion for recording and/or reproducing signals on and/or from the recording medium, a carrying portion for c... | 08/08/2006 |
| 7016267 | Magnetooptical recording apparatus having retreatable magnetic head A magnetooptical recording apparatus that records information by applying a magnetic field from a magnetic head while irradiating a light beam onto a magnetooptical disk from an optical pickup. The apparatus includes an optical pickup, a magnetic head having a slide... | 03/21/2006 |
| 6982933 | Recording and/or reproducing apparatus and recording medium cartridge holder A recording and/or reproducing apparatus for recording and/or reproducing signals on and/or from a recording medium includes a recording and/or reproducing portion for recording and/or reproducing signals on and/or from the recording medium, a carrying portion for c... | 01/03/2006 |
| 6958891 | Actuator loading/unloading device for disc drive An actuator loading/unloading device includes a block unit disposed at a base of a disc drive to be positioned outside a disc, a lamp member positioned on the block unit so that the lamp member is lifted from or lowered down on the block unit, an actuator being park... | 10/25/2005 |
| 6901035 | Magneto-optical disc drive having insertion restricting and locking portions A recording/reproducing apparatus includes a record medium cartridge holder having a main support portion with a cartridge carrying portion slidably arranged on it for withdrawing a cartridge held at a standby position to a withdrawal position. An insertion restrict... | 05/31/2005 |
| 6845415 | Computing system capable of controlling disk loading and disk unloading operations of an optical disk drive A computing system is adapted for use with an optical disk drive, and includes a motherboard and a control key. The motherboard is adapted to be coupled electrically to the optical disk drive. The control key is coupled electrically to the motherboard, and is operab... | 01/18/2005 |
| 6683824 | Magneto-optical recording device having optical and magnetic heads moving independently An optical storage device adapted so that a cartridge accommodating an optical storage medium is inserted/ejected with respect to the device. The device includes a drive base, a cartridge holder mounted on the drive base for receiving the cartridge, a fir... | 01/27/2004 |
| 6657925 | Magneto-optical disk drive having first and second movable sliders A recording and/or reproducing apparatus for recording and/or reproducing signals on and/or from a recording medium includes a recording and/or reproducing portion for recording and/or reproducing signals on and/or from the recording medium, a carrying po... | 12/02/2003 |
| 6515943 | Information storage device having an optical head assembly and a magnetic head assembly both mounted upon a single carriage An information storage device having a mechanism for automatically detecting a misalignment between a magnetic head and an optical head and correcting the misalignment. The information storage device includes a carriage, an optical head mounted on the car... | 02/04/2003 |
| 6418090 | Biasing magnet positioning mechanism A biasing magnet positioning mechanism for a magneto-optical disc drive is provided a cartridge holder, a cartridge holder moving mechanism and a biasing magnet. The biasing magnet is provided with a first contact portion on a side closer to a rotational ... | 07/09/2002 |
| 6370088 | Photomagnetic recording/reproduction apparatus A position detecting switch SW1 detects insertion of a disk 1 into a movable holder 3. A reproducing position detecting switch SW2 detects a reproducing position RP of the disk 1. A recording position detecting switch SW3 detects a recording position RC o... | 04/09/2002 |
| 6243333 | Magneto-optical disk drive A magneto-optical disk drive incorporates: a structure to mount a front panel to a frame using a cartridge loading system, using a set of linearly movable control cam plates, to draw a cartridge into a cartridge holder and then to move the cartridge holde... | 06/05/2001 |
| 6157595 | Magneto-optical disk loading device In an optical disk device of the present invention, a spindle motor is separated into (1) a first motor unit composed of a bearing member, a bearing support for supporting the bearing member, and a turn table fixed to a rotor magnet and (2) a second motor... | 12/05/2000 |
| 5777952 | Thin bias magnet unit for magneto-optical recording device A bias magnet unit has a permanent magnet that applies a bias magnetic field to an optical spot on a magneto-optical disk. A driving coil rotates the magnet in order to change a polarity of the bias magnetic field. A sensor detects the intensity and polar... | 07/07/1998 |
| 5771217 | Magneto-optical disk apparatus having a ejector arm and magnetic field generating means mounted on a stationary base A disk apparatus in which the thickness is suppressed. A recording/reproducing medium containing a disk rotatably in a hard case is moved substantially in a horizontal direction through an opening of the base of the disk apparatus for insertion and ejecti... | 06/23/1998 |
| 5687142 | Disc apparatus having a plurality of reading/recording head driving manners for disc track seeking movement A head reads information from and/or records information to a disc. A head driving unit drives the head on a disc in substantially radial direction thereof, the moving being executed in either a first driving manner or a second driving manner different fr... | 11/11/1997 |
| 5677897 | Apparatus for recording and reproducing magneto optical disc A cartridge of write and read type or a cartridge of read only type is selectively loaded to a recording and reproducing apparatus. The recording and reproducing apparatus is provided with: a magnetic head for applying a magnetic field; a head movement de... | 10/14/1997 |
| 5644554 | Magnetic head load/unload device, method and a magneto-optical disk apparatus using the same A magnetic head is supported with variable stiffness for loading onto the disk surface and unloading off the disk surface. The magnetic head is attached to an end of a thin leaf spring which has been curved in advance, and the leaf spring is interposed be... | 07/01/1997 |
| 5623457 | Photomagnetic disc drive system having a locking mechanism An apparatus for recording and reproducing information stored on a photomagnetic disc, includes a magnetic head which produces magnetic field. The apparatus comprises a carriage radially movable with respect to the photomagnetic disc. A head supporting me... | 04/22/1997 |
| 5604719 | Magnetooptical information recording/reproducing method and apparatus employing a floating slider supporting a magnetic head A magnetooptical information recording/reproducing apparatus is provided with a floating slider for supporting a magnetic head for applying a magnetic field modulated according to information to a magnetooptical information recording medium. The floating ... | 02/18/1997 |
| 5587973 | Magneto-optical disk drive system with magnetic head retracting mechanism and manual cartridge ejecting mechanism A magneto-optical disk drive system, utilizing a magnetic field modulation recording method, has a disk cartridge for housing a magneto-optical disk therein and insertable into a system housing and a magnetic head in the system housing for writing informa... | 12/24/1996 |
| 5586092 | Magnetooptic disk player A magnetooptic disk player records and/or reproduces the information of a magnetooptic disk loaded into a disk cartridge using an optical pickup and a magnetic head. The apparatus loads and unloads the magnetooptic disk cartridge on a deck. When a recorda... | 12/17/1996 |
| 5463509 | Disc cartridge holder having a shutter control arm disposed in a key-hole shaped aperture formed in the cartridge holder A disc drive includes a cartridge holder formed of a single piece of sheet metal which cooperates with a slide plate which is similarly formed of a single piece of sheet metal. The sides of inclined guide slots formed in side walls of the slide plate are ... | 10/31/1995 |
| 5452271 | Magneto-optical disc recording and/or reproducing apparatus with simplified means for moving the magnetic head close to and away from the magneto-optical disc during loading and unloading of the magneto-optical disc cartridge A magneto-optical disc recording and/or reproducing apparatus has a disc cartridge loading portion on which a disc cartridge housing a magneto-optical disc is loaded. A disc rotary drive device rotates the magneto-optical disc. A disc loading mechanism lo... | 09/19/1995 |
| 5384757 | Magneto-optical disc recording and/or reproducing apparatus A magneto-optical disc recording and/or reproducing apparatus comprises a disc cartridge loading portion on which a disc cartridge to housing an magneto-optical disc is loaded; a disc rotary drive means for rotating the magneto-optical disc; an optical pi... | 01/24/1995 |
| 5329504 | Disc cartridge loading apparatus A disc recording apparatus includes a base member, a cartridge holder, a magnetic head and a supporting arm. The base member has a spindle motor to rotationally drive a magneto-optical disc accommodated in a disc cartridge and an optical pickup unit for r... | 07/12/1994 |
| 5258965 | Photo-magnetic disk driving apparatus Photo-magnetic disk driver for recording, playing back, or erasing information on a photo-magnetic disk in a cartridge. The disk driver has a driver to rotate the photo-magnetic disk at a driving position, a generator of a magnetic field having a directio... | 11/02/1993 |
| 5247496 | Recording and/or reproducing apparatus for using magneto-optical disc A magneto-optical disc recording and/or reproducing apparatus having an external magnetic field generating means for supplying an external magnetic field to a magneto-optical disc, a spacer sheet disposed relative to the magneto-optical disc at its surfac... | 09/21/1993 |
| 5224079 | Recording apparatus for magneto-optical disc and disc cartridge misinsertion preventing mechanism A magneto-optical disc recording apparatus for writing information signals on a disc includes an external magnetic field generator that moves in close to the disc after the disc begins to rotate and moves away from the disc before the disc stops rotating ... | 06/29/1993 |
| 5202861 | Magneto-optical disk drive having a mechanism for moving a bias magnetic field coil A magneto-optical disk drive in which a bias magnetic field coil is mounted on a cassette holder and movable into and out of contact with the cassette holder. A coil base carrying the coil is moved by connecting rods which are rotatably mounted on the cas... | 04/13/1993 |
| 5130869 | Recording and/or reproducing apparatus including a cartridge loading device The invention provides an information recording/reproducing apparatus having a device for loading a cartridge internally holding an information recording medium, an opposing member directly facing the information recording medium at least in a recording m... | 07/14/1992 |
| 5107484 | Arrangement of recording/reproducing apparatus There is disclosed herein a recording/reproducing apparatus including a magnetic field supply device for recording and reproducing of information and a cartridge holder for holding a cartridge having therein a recording disc. The apparatus includes a firs... | 04/21/1992 |
| 5103435 | Bias magnetic field moving apparatus for a photomagnetic recording apparatus A bias magnetic field moving apparatus for photomagnetic recording apparatus includes an arm rotatably provided in a photomagnetic recording apparatus so that one end side of the arm can approach and separate from a photomagnetic recording medium. An arm ... | 04/07/1992 |
| 5060207 | Magneto-optical recording/reproducing apparatus A magneto-optical recording/reproducing apparatus includes a frame, a cartridge containing therein a magneto-optical recording disk, an optical head for applying an optical beam on the recording disk, an electromagnet for applying a bias magnetic field on... | 10/22/1991 |
| 4993009 | Opto-magnetic recording apparatus with a bias magnetic field generating means movable parallel to a recording surface of a recording medium An opto-magnetic recording apparatus for radiating a light beam onto an opto-magnetic recording medium. The opto-magnetic recording apparatus includes a magnet for generating a magnetic field for biasing the opto-magnetic recording medium while the same i... | 02/12/1991 |
| 4497006 | Magneto-optic recording/playback head assembly There is disclosed a head assembly for use in a magneto-optic recording/playback system which includes a memory medium having a magnetic coating having a magnetic anisotropy in a vertical direction. A light beam is applied to the memory medium for recordi... | 01/29/1985 |
