摘要:
An interactive system for lapping transducers has an abrasive surface that communicates with the transducers in order to provide information for controlling the lapping and testing the transducers. The lapping body is preferably shaped as a disk, drum or tape, and communicates with the transducer with a type of signal that the transducer is designed to read and/or write. Thus for lapping a magnetic head or slider to be employed in a hard disk drive, the lapping body contains a magnetic medium layer that is either prerecorded or written by the head during lapping, while the signal received by the head is monitored and analyzed by a processor in order to determine, in part, when to terminate lapping. A series of transducers can be simultaneously lapped while individually monitored, so that each transducer can be removed from the lapping body individually upon receipt of a signal indicating that transducer has been lapped an optimal amount. Transducers for employment in drive systems can also be tested for performance characteristics by utilizing lapping bodies having surface characteristics similar to those found in the drive system.
摘要:
A low-mass head/flexure/conductor assembly for reading and writing information with respect to a rigid magnetic recording disk. The assembly includes a read/write transducer unit, an elongate flexure, and gimbal structure interconnecting and articulating the transducer unit and the flexure for selected, limited relative roll and pitch, without relative yaw. Conductive ribbons that form part of the gimbal structure also form part of the conductive circuit provided in the assembly. The assembly has an effective mass of no more than about 1.5-milligrams. Plural, hardened, wear-resistant feet are formed on the transducer unit for enabling sliding contact with the recording surface in a disk.
摘要:
An integrated unitary micro-burnishing head structure for use with the surface of rigid magnetic recording media. In one type of embodiment, the proposed head structure includes a single elongate flexure body to one end of which is joined a media-contacting abrader head which may take any one of several different preferred shapes. In another embodiment, plural elongate flexure bodies are disposed in a comb-like array carrying abrader heads at one set of free ends, and joined adjacent their opposite ends through a common joinder structure.
摘要:
A disk drive system for contact recording has a flexure beam holding a transducer at one end, the flexure beam being oriented substantially along the direction that the transducer slides on a rigid magnetic disk. The transducer has a protrusion which contacts the disk and separates the rest of the transducer from the moving air film that adjoins the spinning disk, the protrusion containing a magnetic pole structure that communicates with the disk during sliding. A preferred embodiment employs a gimbal structure which allows limited movement of the transducer relative to the flexure beam and three disk-contacting pads extending down from the transducer to make contact with the magnetic disk, at least one of the pads containing a magnetic pole structure and two of the pads trailing the third pad.
摘要:
An integrated head/flexure/conductor structure for the reading and writing of information with respect to a relatively moving medium, such as a disk or drum, and a method for manufacturing the same. The proposed structure takes the form of a micro-dimension, elongate, dielectric flexure body, and embedded within such body both magnetic read/write pole structure, and electrical coil and conductor structure operatively associated with the pole structure. The flexure body and the embedded constituents are formed on an atom-by-atom basis utilizing one or more conventioanl material-deposition processes.
摘要:
An improved recording and read head particularly suited for use with perpendicular recording techniques. The recording head can be fabricated either as a single head or as a multitrack array. If fabricated as a multitrack array, the head includes a plurality of main poles spaced closely to one another and a common long flux closing pole which completes a magnetic circuit between the main poles and the recording medium. Each main pole of the head array is individually addressable with a purpose of recording or reading by means of a flux gate arrangement. The flux gate may be utilized so that the head operates either in a conventional fashion by detecting the rate of change of induced flux or by detecting the magnitude of the induced flux.
摘要:
An electromagnetic disk drive system including a rigid disk and electromagnetic read/write head structure and elongate flexure structure which cooperatively offer unique features and performance in the head/disk interface region. The head structure and flexure structure, in one form of the invention, are unitary and integrated and in another form are articulated. Both forms of the invention perform with substantially continuous dynamic contact with the recording surface of the disk, and both are characterized by a low effective mass and low contact force between the head and disk surface.
摘要:
A low-mass head/flexure/conductor assembly for reading and writing information with respect to a rigid magnetic recording disk. The assembly includes a read/write transducer unit, an elongate flexure, and gimbal structure interconnecting and articulating the transducer unit and the flexure for selected, limited relative roll and pitch, without relative yaw. Conductive ribbons that form part of the gimbal structure also form part of the conductive circuit provided in the assembly. The assembly has an effective mass of no more than about 1.5-milligrams. Plural, hardened, wear-resistant feet are formed on the transducer unit for enabling sliding contact with the recording surface in a disk. The flexure may be formed of various materials, including both ceramic and nonceramic materials, and may carry applied damping material in order to control certain resonance and servo-performance characteristics.
摘要:
A unitary micro-flexure structure and a method of making the same, wherein the structure takes the form of an elongate dielectric flexure body having a mounting end and a free end, and which is adapted for cantilevered disposition, wherein the body takes a form which is constructed entirely from thin-film deposition and patterning processes involving the deposition of a metal oxide, and further wherein the body has a topography which is at least partially determined by etch-removable surface-boundary-defining structure.
摘要:
An integrated head/flexure/conductor structure for the reading and writing of information with respect to a relatively moving medium, such as a disk or drum, and a method for manufacturing the same. The proposed structure takes the form of a micro-dimension, elongate dielectric flexure body, and embedded within such body both magnetic read/write pole structure, and electrical coil and conductor structure operatively associated with the pole structure. The flexure body and the embedded constituents are formed on an atom-by-atom basis utilizing one or more conventional material-deposition processes. The method [proposed by the invention] includes orthogonal-plane processing steps that facilitate formation of the magnetic pole structure in a way enhancing dimensional control. In addition, the method [of the invention] involves steps utilizing etchable wall-like stripes, and a commonly etchable base layer, which together define three sides of the structure of the invention during formation thereof, etching of which stripes and layer greatly facilitates separation and release of finally completed units as free individuals.