Abstract: A disk drive apparatus includes a cartridge in which a disk for storing information is accommodated, a movable holder in which the cartridge is inserted so that an edge of the cartridge is placed at an inserted position, an ejection member rotatably supported for ejecting the cartridge from the holder in an ejecting direction when an ejection button is depressed, so that the cartridge edge is placed at an ejected position, a spring for actuating the ejection member in the ejecting direction, and a braking member for applying a resisting force to the ejection member in a direction opposite to the ejecting direction during the ejecting movement of the cartridge.

Abstract: A loading mechanism loads a recording medium in response to an inserting operation of the recording medium where the loading mechanism shifts the recording medium from an inserting/ejecting position to a loaded position where data can be recorded on the recording medium and the data can be reproduced from the recording medium. An ejecting mechanism ejects the recording medium in response to a pushing operation of the recording medium located in the loaded position as wherein the ejecting mechanism causes the recording medium to return to the inserting/ejecting position.

Abstract: A head loading mechanism of a disk apparatus includes an arm for holding a magnetic head at a leading edge of the arm, the arm longitudinally extending in a radial direction of a magneto-optical disk toward the center of the disk and having a base portion and a plurality of laterally projecting portions between the leading edge and the base portion, a first supporting part for supporting the base portion of the arm, a second supporting part for supporting the laterally projecting portions of the arm when the disk is placed in a read/write position where information is recorded on or reproduced from the disk, and an arm raising part for vertically rotating the arm around the base portion supported by the first supporting part when the disk is moved from the read/write position to an insertion position, allowing the magnetic head to be placed in an unloaded position in which the magnetic head is separate from the disk.

Abstract: A flexible magnetic disk drive is disclosed which operates under the control of a host system. A CMOS inverter is employed as a power saving switch, holding a file protect sensor energized only when the standard "drive select" signal from the host commands operation of the disk drive. Another CMOS inverter is provided for two disk capacity a sensors which provide signals indicative of the data storage capacity of the loaded disk cartridge. The disk capacity sensors are energized only when the drive select signal commands operation of the disk drive and when the standard "motor on" signal dictates rotation of a disk drive motor.

Abstract: A disk storage device includes a head part which writes data into a storage disk loaded into the disk storage device and reads data from the storage disk, a linear actuator moving the head part in radial directions of the storage disk, an eject member which is operated when the storage disk is ejected, and a movement mechanism which moves the storage disk to an eject portion in response to an operation of the eject member and which moves the storage disk to a read/write position. A lock part, which has a lock member cooperating with the movement mechanism, keeps, in response to the operation of the eject member, the head part stationary at the eject position by the lock member which engages with one of the head part and the linear actuator.

Abstract: A laser power measuring jig is adapted for use in measuring a laser power of a laser beam which is emitted from an optical head of an optical disk unit which records and/or reproduces information on and/or from a medium. The laser power measuring jig supplies power information related to the laser power of the laser beam to a power meter which measures the laser power. The laser power measuring jig includes a main jig body which has a size and a shape which are approximately the same as those of the medium, and this main jig body is loaded into the optical disk unit. The laser power measuring jig also includes a mechanism for outputting the power information outside the optical disk unit and supplying the laser power information to the power meter when the main jig body is loaded into the optical disk unit.

Abstract: An apparatus suitable for digital data transfer with a tape cassette is designed to require no movement of a magnetic transducer head to establish data transfer contact between the head and a tape cassette. The tape cassette is inserted in the apparatus in the direction of a notional line intersecting at right angles the axes of rotation of the pair of hubs of the tape cassette. Upon full insertion in the apparatus the tape cassette has its apertured front side held opposite the transducer head. A cassette shift mechanism subsequently transports the loaded tape cassette in a direction normal to the notional line, into data transfer contact with the transducer head. A tape transport shift mechanism also operates to move a pair of motor driven spindles into driving engagement with the respective hubs of the tape cassette. The insertion of the tape cassette automatically triggers the operation of both cassette shift mechanism and tape transport shift mechanism.

Abstract: A video tape recorder comprises a loading disc, a supply reel mount and a take-up reel mount, a reel mount driving device to be selectively associated with the supply reel mount and the take-up reel mount to establish recording, playback, rewinding, fast-forward, and stop modes, and a mode switching device for selectively transmitting the rotatory force of the motor to the loading disc and the reel mount driving device so that the loading disc is rotated when the rotatory force is transmitted to the loading disc, and that the reel mount driving device is set to a selected one of said modes when the rotatory force is transmitted to the reel mount driving device.