Abstract: Disclosed is a library device in which the space to enlarge the magazine can be secured to the rear side of the library device. The library device includes power supply means for supplying electricity to the library device, medium housing means which can house a plurality of computer-readable media, medium reading/writing means for reading/writing data from/to the medium, medium conveying means for conveying the medium between the medium housing means and the medium reading/writing means, control means for controlling operation of the library device and first connection means to which the power supply means and the control means can be electrically connected when these means are installed and from which the power supply means and the control means can be disconnected when these means are extracted.

Abstract: A method of producing a recording medium includes preparing a substrate of the recording medium, forming a first face recording layer at a first face side of the substrate, forming a first face protection layer for protecting the first face recording layer on the first face recording layer, forming a second face constituting whole or a part of a layer configuration at a second face side of the substrate, deactivating a protection feature of the first face protection layer; and forming a first face constituting whole or a part of a layer configuration of a first face on the first face protection layer.

Abstract: According to one embodiment, a method for forming a magnetic head having a current perpendicular to plan (CPP) sensor, includes forming a magnetoresistance effect film, performing a subtractive process for defining a back edge and a height length of the magnetoresistance effect film, depositing an insulating film adjacent the back edge of the magnetoresistance effect film, and ion milling at least an upper surface of a first portion of the insulating film located closest to the magnetoresistance effect film, where the upper surface of the first portion of the insulating film lies substantially along a plane. After the ion milling, the insulating film has no overlap of the insulating film above and/or onto the magnetoresistance effect film and no bulging in a region immediately adjacent a boundary between the insulating film and the magnetoresistance effect film.

Abstract: A design is disclosed for a microwave assisted magnetic recording device wherein direct current and rf current are simultaneously injected from a bias tee into a spin transfer oscillator (STO) between a main pole and write shield to improve the assist process. The STO oscillation layer (OL) has a large angle magnetization oscillation frequency that is locked to a magnetic medium bit resonance frequency f0 when the rf current has a frequency f=f0 and a threshold current density is applied. Alternatively, the OL magnetization oscillation frequency may be adjusted closer to f0 to improve the assist process. A third advantage is lowering the threshold current density when both direct current and rf current are injected into the STO during a write process. The main pole is grounded when direct current and rf current are injected into a write shield.

Abstract: An information recording system includes a case, a head provided inside the case, a recording tape that travels inside the case due to rotation of a pair of reels that are provided inside the case, with at least one of information writing or information reading performed to or from the recording tape by the head while the recording tape is in contact with the head, a drive mechanism that drives the head between an in-use position contacting the recording tape and a cleaning position separated from the in-use position, and a cleaning device that is provided inside the case, and that cleans the head when positioned in the cleaning position by rubbing against the head in a direction different from a direction of movement of the head from the in-use position to the cleaning position.

Abstract: A magnetoresistive transducer head assembly includes a reader element, a writer element and a high impedance shunt electrically connecting the reader element and the writer element. The high impedance shunt provides a high impedance conductive path for maintaining electrostatic charge equipotential between the reader element and the writer element.

Abstract: A perpendicular magnetic recording writer for use in a data storage device, the recording transducer has a magnetic writer pole, a pole tip facing an air bearing surface (ABS). The pole tip has a pole face, leading side wall, a trailing side wall, a first side wall and a second side wall. A trailing side wall nonmagnetic gap layer on the trailing side wall, a first side wall nonmagnetic gap layer deposited on the first side wall, and a second side wall nonmagnetic gap layer deposited on the second side wall. A high magnetic moment seed layer is deposited on the trailing side wall nonmagnetic gap layer, the first side wall nonmagnetic gap layer, and the second side wall nonmagnetic gap layer. In other aspects of the invention shields are provided that have magnetic moments less than the magnetic moment of the seed layers.

Abstract: A motor includes a stator and a rotor including a disk portion, a cylindrical portion, and a stopper. The stopper includes a stopper protruding portion and is fixed to an inner surface of the cylindrical portion. The cylindrical portion includes a cylindrical portion protruding portion that opposes an outer surface of the stopper. Adhesive is included between the cylindrical portion and the stopper. A gap between an upper end portion of the outer surface of the stopper and an inner peripheral surface of the cylindrical portion protruding portion defines a first tapered gap. A gap between a lower end portion of the outer surface of the stopper and an inner peripheral surface of the cylindrical portion defines a second tapered gap. The adhesive is included in the first tapered gap and the second tapered gap. The stator includes an annular or substantially annular surface below the second tapered gap.

Abstract: A storage apparatus includes a medium storing shelf having a plurality of cells for storing a recording medium, a recording and reproducing device for performing a recording and reproducing process on the recording medium, a transporting device for transporting the recording medium between the medium storing shelf and the recording and reproducing device, a flag provided on the cell and used for obtaining position information for transporting the recording medium, and a flag moving mechanism for moving the flag to retracted position which does not hinder mounting of recording medium into the cell.

Abstract: The present invention provides a movement mechanism that is capable of easily releasing a bite-in state of a feed screw and a rack without increasing the size or the cost of an apparatus and without breaking the movement mechanism. A movement mechanism according to the present invention linearly moves a movement object, and includes: a feed screw; a drive motor for rotating the feed screw; a drive section for supplying a drive pulse to the drive motor; a movement member for linearly moving the movement object along with the rotation of the feed screw by the drive motor, the movement member being engaged with the feed screw; a detection section for detecting a situation in which the movement object is not moving; and a control section for, when the detection section has detected a situation in which the movement object is not moving, causing the drive section to output a drive pulse that causes the drive motor to rotate and vibrate.

Abstract: A method, including depositing a layer of material onto a base portion of a wafer, is disclosed. The layer of material has a first surface adjacent the base portion. The method also includes depositing a pattern of masking material onto a portion of a second surface of the layer. Material from the layer of material that is unprotected by the pattern of masking material is removed from the layer of material. By removing such material a portion of the layer of material is suspended from the base portion.

Abstract: A disk drive having a hub comprising a top surface and a non-circular protrusion extending upward from the top surface, a disk clamp comprising a wall portion and a non-circular opening formed through the clamp, the opening configured to receive the non-circular protrusion extending upward from the top surface of the hub; and at least one disk supported by the hub, wherein the non-circular protrusion extending upward from the top surface of the hub is inserted into the opening formed in the clamp, and wherein an outer annular portion of the clamp engages the disk to provide clamping force.

Abstract: A method to tune an oscillation layer frequency in a spin torque oscillator (STO) during a microwave assisted magnetic recording (MAMR) process is described. The STO oscillation layer (OL) has a large angle magnetization oscillation frequency that is locked to a magnetic medium bit resonance frequency f0 when the rf current has a frequency f=f0 and a threshold current density is applied. Alternatively, the OL magnetization oscillation frequency may be adjusted closer to f0 to improve the assist process. A third advantage is lowering the threshold current density when both direct current and rf current are injected into the STO during a write process. The main pole is grounded when direct current and rf current are injected into a write shield.

Abstract: A magazine detachably installed in a main body of a disc changer is divided into sections by partitions for storing a large number of optical discs. The magazine is provided with a belt set around rollers, which carries the optical disc in contact with the belt. In the disc changer, the belt is rotated by a gear of the roller, which is engaged with an external drive gear for taking the optical disc through rotating movement. Among the optical discs which have been taken, a target optical disc opposite the slit of the disc control plate passes through the slit, and the other optical discs stop while abutting against the disc control plate. The optical disc which has passed through the slit is inserted into disc carriage rollers, and further carried to the drive for recording/reproducing.

Abstract: According to one embodiment, a magnetic recording head of a disk drive includes a main pole configured to generate a magnetic field in a direction perpendicular to a recording layer of a recording medium, a write shield magnetic pole opposite to a trailing side of the main pole with a gap, a coil configured to excite a magnetic flux in a magnetic circuit, and a high-frequency oscillator provided between a tip portion of the main pole on a side of the recording medium and the write shield magnetic pole to generate a high-frequency magnetic field. The write shield magnetic pole includes an end face opposite to the high-frequency oscillator and the end face is formed so that a distance from the main pole increases with an increasing distance from the recording medium.

Abstract: A spin torque oscillator for microwave assisted recording includes a perpendicular free layer having a magnetic anisotropy axis in a direction perpendicular to a film surface, and an in-plane free layer composed of a magnetic film effectively having a magnetization easy plane on a film surface. When electric currents flows from the in-plane free layer side to the perpendicular free layer side, both free layers exchange spin information and thereby rotate their respective magnetizations almost antiparallel to each other and along a boundary surface with high-speed. Preferably, the perpendicular free layer is thinner than the in-plane free layer. It is also preferable that a magnetic anisotropy field of the perpendicular free layer attributable to materials should balance, in reverse directions, with an effective demagnetizing field in the perpendicular direction. Furthermore, the perpendicular free layer is preferably placed on the main pole side.

Abstract: A disk driving apparatus includes a base member, a hub member, and a fluid bearing unit. The base member has a head movement region on which a head unit is to be mounted such that a head portion of the head unit can be moved along the radial direction of a recording face in a reciprocating manner while facing the recording face of a recording disk to be mounted on the hub member, and a recessed housing portion housing the fluid bearing unit such that it surrounds at least a part of a rotor unit supported by the fluid bearing unit. Furthermore, the base member has an inhibiting wall at a boundary between the head movement region and the recessed housing portion so as to prevent a lubricant fluid from migrating toward the recording disk side.

Abstract: A tape cartridge library that is equipped with a cleaning device is described. The tape cartridge library essentially includes a plurality of tape cartridges each possessing recording tape media. A plurality of tape drives that read and write data to and from each of the tape cartridges. A tape cleaning drive incapable of transferring data to and from the recording tape media which is independent of the tape drives, the tape cleaning drive disposed entirely within the tape cartridge library. The tape cleaning drive automatically receives one of the tape cartridges and cleans its respective recording tape medium when a predetermined reason for cleaning the tape cartridge is justified.

Abstract: According to one embodiment, a magnetic recording head includes a disk-facing surface configured to face a recording layer of a recording medium, a main magnetic pole includes a distal end located on the disk-facing surface and configured to apply a recording magnetic field to the recording layer of the recording medium, a leading shield on a leading side of the main magnetic pole, opposed to the distal end of the main magnetic pole across a gap, a high-frequency oscillator between the leading shield and the distal end of the main magnetic pole, and a recording coil configured to excite the main magnetic pole with a magnetic field.

Abstract: A writer main pole for a perpendicular magnetic recording system is provided. The writer pole has a tunable bottom gap to side gap ratio, and may be formed using deposition of a first seed layer through an ion beam deposition process, deposition of a second seed layer through a physical vapor deposition process, and deposition of a non-magnetic gap layer through a chemical vapor deposition process.