Abstract: A planar bidirectional tape head with planar read and write elements for reading and writing data on a magnetic recording tape includes a substrate, a tape bearing surface for engaging the magnetic tape, one or more write element arrays formed on the substrate, and one or more read element arrays formed on the substrate. The one or more write element arrays and the one or more read element arrays comprise plural thin film layers oriented in generally parallel relationship with the tape bearing surface.

Abstract: A low track pitch write module and bidirectional tape head for writing and/or reading data on a magnetic recording tape. The write module and tape head have a tape bearing surface for engaging the magnetic recording tape and plural write elements. The write elements are arranged so that the write gaps of adjacent write elements are spaced from each other by not more than approximately one write gap width, while being generally aligned along an axis that is perpendicular to a direction of movement of the magnetic recording tape. The write elements may have a planar or vertical construction comprising plural thin film layers oriented in generally parallel or perpendicular relationship with the tape bearing surface. One or more read element arrays may also be provided.

Abstract: A planar write module and a hybrid planar write-vertical read bidirectional tape head comprising the write module and one or more vertical read modules. The write module has a write module tape bearing surface for engaging the magnetic recording tape. Plural write elements in the write module each comprise plural thin film layers oriented in generally parallel planar relationship with the write module tape bearing surface. The write elements are arranged so that the transducing gaps of adjacent write elements are generally aligned in a direction that is transverse to a streaming direction of the magnetic recording tape. Each read module has a read module tape bearing surface for engaging the magnetic recording tape. Plural read elements in the one or more read modules each comprise plural thin film layers oriented in generally perpendicular relationship with the read module tape bearing surface.

Abstract: A tape drive for reading both new technology tapes and legacy tapes. The tape drive includes a three bump head with two outer read bumps and an inner write bump. The outer read bumps include readers for reading data from tracks of a first width on a first storage tape while the inner write bump includes writers for writing data in tracks of the first storage tape. Legacy readers are provided in the head to read data from tracks of a second width that is greater than the first track width on a second storage tape. The legacy readers are provided by piggybacking or merged-pole techniques in the inner write bump or are provided in one or both of the outer read bumps. The tape drive includes control circuitry with channels for processing data signals from the narrower readers and channels for processing data signals from the wider legacy readers.

Abstract: A thin film magnetic head substrate includes a plurality of head element portions having read elements and write elements in rows. Adjacent head element portions interpose a read monitor element and a write monitor element that are used as element resistance monitors for the read element and the write element when a lapping process is performed to form a medium-facing surface on the head element portion. A common electrode terminal is connected with the read monitor element and the write monitor element. A pair of individual electrode terminals are each connected to the read monitor element and the write monitor element, respectively.

Abstract: An exemplary magnetic head assembly for use with magnetic recording media is provided. In one example, a head includes a data island associated with at least one data transducer, the data island having a width along a direction of media transport and a radius of curvature. The magnetic head further includes a mini-outrigger placed adjacent to the data island and separated by a void, wherein a width of the mini-outrigger along the direction of media transport is less than the width of the data island. Additionally, in one example, the radius of curvature of the mini-outrigger is less than the radius of curvature of the data island. The wrap angle of magnetic storage tape to the data island may be less than 3 degrees. Further, the radius of curvature of the mini-outrigger may be less than one-half the radius of curvature of the data island.

Abstract: In one aspect, an exemplary method of manufacturing a magnetic head assembly is provided. In one example, the method includes forming islands in a magnetic head structure to define a pair of mini-outriggers adjacent a data island, where the data island is separated from each mini-outrigger by a void, and a width of the data island along a direction of tape transport is greater than a width of the mini-outrigger. The method further includes lapping the head structure to remove a portion of the mini-outrigger, thereby creating a wrap angle between the tape and the surface of the data island. In one example, the lapping process reduces the mini-outrigger height relative to the data island in an adaptive manner, where the final contour and height of the mini-outrigger is influenced by the data island surface, e.g., by the width, radius of curvature, and the like.

Abstract: A compression zone recording head is provided having the recording tape in contact or near contact with the recording read/write transducer elements in a compression zone of the tape passing over a transducing surface. The compression zone recording head comprises a flat or shallow contour head having a thin, hard, preferably conducting closure to provide wear protection to the transducers. In one embodiment of the invention, the transducers are located in a compression zone region where the recording tape contacts an edge of the transducing surface at a controlled wrap angle. In another embodiment, the transducers are located in a canopy zone region of the transducing surface due to bending of the tape due to the overwrap. The protective closure is preferably made of sputter deposited Al—Fe—Si, or alternatively of a deposited or bonded layer of Al—Fe—Si, Al—O—Ti—C, Zr—O—Ti, Si—N, Si—C or Zr—O.

Abstract: A tape head module assembly method is disclosed. A first and second module holder are placed in an initial alignment with module holder ends facing each other, the module ends each holding a tape head module. A tape wrap angle between the first and second module is set by first performing a fringe alignment and then lifting a rear end of the first and second module holder a prescribed amount. A horizontal adjuster produces a rotation for the first module holder so that gaps between the first and second modules are parallel. An alignment along a longitudinal axis for the second module holder is selected and the second module is translated laterally until the second tape head module held by the second module holder is aligned with the first tape head module held by the first module holder to provide reader-opposite-writer track-to-track registration. Then, the first and second tape head modules are joined together using a joining agent in the gap between the first and second tape head modules.

Abstract: A magnetic head according to another embodiment includes a head body including a top face, a bottom face, a pair of elongated side faces, and a pair of short end faces; at least one transducer formed in communication with the top face of the head body; and a single groove formed in the top face of the head body and extending between the transducers and one of the side faces of the head body. A method for manufacturing a magnetic head is also presented.

Abstract: A tape recording head is provided comprising a support plate having a contoured surface with an opening in the contoured surface which allows head chips to protrude far enough to allow proper head tape contact for recording. The support plate is fixed on a coarse actuator so that the support plate and coarse actuator move together perpendicular to the motion of the recording tape. The head chips comprising rowbar substrates containing a multiplicity of recording elements are supported on a carrier mounted on a fine actuator and are not fixed to the support plate to allow low mass fine actuation.

Abstract: A tape head comprised of a substrate and a closure coupled to the substrate. Read and/or write elements are embedded in the substrate. Contact pads are coupled to the substrate, the pads being in electrical communication with the read and/or write elements. At least one lapping element is embedded in the substrate. Supplemental pads are coupled to the substrate, the supplemental pads being in electrical communication with at least one lapping element. A tape head according to another embodiment includes a substrate, a patterned (e.g. generally U-shaped, rectangular, etc.) closure formed on the substrate, read and/or write elements embedded in the substrate, and two rows of contact pads coupled to the substrate, the pads being in electrical communication with the read and/or write elements.

Abstract: A manufacturing process for reducing magnetic spacing loss in a magnetic recording head. The recession of the transducer relative to the substrate at the air bearing surface is decreased by applying a coating of sacrificial material such as diamond-like carbon to the upper surfaces of the substrate, the transducer, and the encapsulation material such as alumina prior to final kiss lapping. The recession due to the alumina being softer than the substrate is greatly reduced since the DLC is kiss-lapped.

Abstract: A read/write head for a magnetic tape includes an elongated chip assembly and a tape running surface formed in the longitudinal direction of the chip assembly. A pair of substantially spaced parallel read/write gap lines for supporting read/write elements extend longitudinally along the tape running surface of the chip assembly. Also, at least one groove is formed on the tape running surface on both sides of each of the read/write gap lines and extends substantially parallel to the read/write gap lines.

Abstract: A tape head and method for forming a tape head are disclosed. The tape head includes a matched support beam pair, each support beam having a tape head disposed on the support beam, each support beam further including engagement surfaces and a recessed area disposed between the engagement surfaces, the matched pair being joined at the engagement surfaces, and the recess areas providing a cable receptacle for framing a cable that is attached to the tape head. The tape head and method for forming a tape head provides tape head assemblies with precise tape wrap angle setting, track-to-tack registration, and head-to-head parallelism suitable for very high density recording. By attaching a read-after-write pair of magnetic recording heads to two rigid, precision U-shaped support beams, the tape heads can be an aligned and hold this alignment accuracy during assembly processing.

Abstract: A thin film magnetic head for a magnetic tape drive to correctly read out, even if off-track, the high density magnetic patterns recorded on magnetic tape without picking up noise from adjacent tracks. A thin film magnetic head is comprised of a first composite thin film magnetic head having a read element and write element with complementary parallel read gaps and write gaps to read and write information on a first track of a magnetic tape, and a second composite thin film magnetic head having a read element and write element with a complementary parallel read gap and a write gap to read and write information on a second track adjacent to a first track, and the read gap and the write gap of the first magnetic head form a right angle relative to the drive direction of the magnetic tape, and the read gap and the write gap of the second magnetic head form an oblique (&thgr;) angle relative to the drive direction of the magnetic tape.

Abstract: A magnetic head device including: a first magnetic head for performing recording in a first magnetic track on a magnetic tape in the longitudinal direction when the magnetic tape runs in one direction; a second magnetic head for performing recording in a second magnetic track parallel to the first magnetic track when the magnetic tape runs in another direction; and a reproducing head disposed between the two magnetic heads is provided. Each of the two magnetic heads has a lower core and an upper core having a width equal to or smaller than the lower core. The two magnetic heads and the reproducing head are arrayed parallel to the running direction of the magnetic tape, and each of the two magnetic heads is so disposed that the upper core precedes the lower core in relation to the running direction of the magnetic tape when recording on the respective magnetic tracks.

Abstract: In a magnetic head according to the present invention, a base is provided with at least one first positioning hole and a magnetic core half has a back portion which is disposed in the first positioning hole. In addition, the base is further provided with at least one first recess at the periphery of the first positioning hole and the base is partially deformed due to the first recess such that a portion of the base at the periphery of the first positioning hole is shifted to press the back portion of the magnetic core half against an inner side of the first positioning hole. Accordingly, the present invention provides a magnetic head in which the magnetic core half can be reliably fixed to the base and a method for manufacturing the magnetic head.

Abstract: A tape head assembly for high-speed and high-density multi-channel read-while-writing (RWW) operation comprises two modules bonded together. The modules are initially formed on an integral unit and gapped in pair, to produce a good reference surface, which insures that the finished head assembly will meet tight azimuth and gap tolerances. The unit is then machined to two separate the modules. Further processing involves individually machining the head surface of each module to achieve desired contours. The machined modules are tested and brought together in the positional arrangement required to form the final head assembly. In disclosed embodiments, the overall contour enables the assembly to skive air and debris off a surface of the magnetic tape before passage of the tape over the transducers. The contour allows the tape to fly over outriggers, but contacts regions at or around the transducers with a low constant contact pressure during RWW operation.

Abstract: A plurality of magnetic head elements, each having a terminal portion, are arranged on a first face of the head chip. A wiring board member is electrically connected to the respective terminal portions of the magnetic head elements. A pair of side chips sandwich the head chip from both sides of the first face. Each of the side chips has faces forming a recessed portion which faces with at least the terminal portions of the magnetic head elements.

Abstract: An audio/control head for used in a Video Cassette Recorder or the like has a core holder 11 arranged to include positioning portions 24 and 25 for determining the pitch length P1 and pressing tabs 23 having an elasticity for pressing inwardly cores members 15 and 17 against the positioning portions 24 and 25 from the outer side. As the cores members 15 and 17 are held directly on the positioning portions 24 and 25, they are inwardly pressed by the pressing tabs 23. Then, the core pitch p1 is precisely determined between the audio core and the control core without using a particular jig during the assembly. The overall number of jigs required for mounting the cores to the core holder can be reduced. Also, the core pitch P1 can be improved in the accuracy and the characteristics of the head will be consistent.

Abstract: In a mounting structure for mounting a conductive shielding case, accommadating therein an audio magnetic head, to a chassis via of an adjusting plate, columnar protrusions formed on both side surfaces of the shielding case are engaged with groove portions formed on cut and raised pieces of the adjusting plate. With this arrangement, it is possible to fix the shielding case and the adjusting plate. Thus it is possible to fix the shielding case to the adjusting plate without using screws, and thereby be decrease the cost of parts and manufacture.

Abstract: A magnetic head mounted on a rotary head drum device comprises a head chip, and a magnetic shield disposed to surround all or a part of surfaces other than a front surface of the head chip. The magnetic shield comprises a magnetic flux absorber made of ferrite and an electromagnetic wave shield made of copper. This enables reduction of the amount of unnecessary magnetic fluxes and electromagnetic waves jumping away from the recording head to the reproducing head. Simultaneously, the magnetic flux absorber absorbs the magnetic flux coming from outside to the reproducing head before the magnetic flux reaches the head chip and the electromagnetic wave shield shields a high frequency electromagnetic wave which was not absorbed by the magnetic flux absorber so that it is possible to reduce the amount of the magnetic flux or the like jumping into the reproducing head and to improve the S/N of the reproduced signal.

Abstract: A multi-track magnetoresistive (MR) tape head with precisely-aligned read/write (R/W) track-pairs and a method for fabrication on a monolithic substrate wherein a plurality of tape heads are fabricated from a single substrate wafer by using complete thin-film processing on both sides of the wafer. The recording elements are aligned with readers opposite writers on the other side, providing a method for fabricating a multi-track thin-film magnetoresistive tape head with precisely-aligned R/W track-pairs fabricated on a monolithic substrate. As used herein, the term monolithic denominates an undivided seamless piece. The wafer is built using modified standard thin-film processes for fabricating direct access storage device (DASD) heads and modified substrate lapping procedures. The gap-to-gap separation within each R/W track-pair is reduced to nearly the thickness of the substrate wafer, which is significantly less than conventional separations known in the art.

Abstract: Methods of forming a head assembly, a head assembly, and a linear tape drive are provided. One aspect provides a method of forming a head assembly including providing a base member; forming a plurality of head components upon the base member individually adapted to communicate information relative to a tape; providing a plurality of component regions adjacent respective ones of the head components and a path of travel of the tape; and providing a support region intermediate adjacent ones of the head components and positioned to support the tape moving along the path of travel, the support region comprising a material different than a material of the component regions.

Abstract: A magnetic tape head assembly is provided along with a method of manufacturing a magnetic tape head. The magnetic tape head comprises a cluster of thin film inductive or magnetoresistive read/write elements, an I-block preferably made of a ceramic material, a U-bar also preferably made of a ceramic material, and a base preferably made of a ceramic or metal material. The U-bar has a substantially U-shaped form providing a recess into which the I-block and the cluster are fixed. A bottom surface of the U-bar, I-block, and cluster is fixed to the base to form a slider assembly. A top surface of the U-bar, I-block, and cluster is machined or etched to form one or more tape bearing surfaces thereon.

Abstract: A magnetic head unit includes a head chip, a plurality of magnetic head elements, a pair of side chips and a base member. The head chip has a first face. The plurality of magnetic head elements are arranged on the first face of the head chip. The pair of side chips sandwich the head chip from both sides of the first face thereof. The base member holds the head chip and the side chips. The head chip, the side chips and the base members are joined to each other by conductive resin.

Abstract: A magnetic head that is excellently adapted to a magnetic core reduced in thickness. When a magnetic core which is reduced in thickness for adaptation to a high recording density is inserted in an opening of a size conventionally formed in a magnetic head of a standard recording density type, a spacer made of a material equivalent or identical to that of a slider is inserted between the magnetic core and the inner wall of the opening. The magnetic core is positioned by means of projections formed on the inner wall of the opening and the spacer. Then, glass as a sealing material is poured into gaps formed in the opening by the magnetic core, the inner wall of the opening and the spacer. The inserted spacer reduces a space volume for the glass to be poured. Further, since the spacer is made of the material equivalent or identical to that of the slider, a partial abrasion at a sliding surface of the slider sliding on a recording medium can be eliminated.

Abstract: A head for a tape drive system has a plurality of transducers formed on a substrate and protected by a cover bar, with a tie bar bonded to the cover bar. The tie bar extends along a tape-facing surface beyond the cover bar, enhancing the structural integrity of the head. Wear bars may be bonded to the substrate, cover bar and tie bar. Alternatively, the tie bar may have a notch within which the substrate and cover bar are bonded. The tie bar reduces misalignment and instability of the transducers, providing increased storage capacity and greater reliability and durability of the tape drive system.

Abstract: A magnetic tape head assembly is provided along with a method of manufacturing a magnetic tape head. The magnetic tape head comprises a cluster of thin film inductive or magnetoresistive read/write elements, an I-block preferably made of a ceramic material, a U-bar also preferably made of a ceramic material, and a base preferably made of a ceramic or metal material. The U-bar has a substantially U-shaped form providing a recess into which the I-block and the cluster are fixed. A bottom surface of the U-bar, I-block, and cluster is fixed to the base to form a slider assembly. A top surface of the U-bar, I-block, and cluster is machined or etched to form one or more tape bearing surfaces thereon.

Abstract: A magnetic head is provided for use with magnetic recording media of varying stiffness. The head includes a first and a second elongated support spaced apart on a facing surface with support surfaces extending along a longitudinal axis. A core support is positioned between the two elongated supports and is wider than the support surfaces to distribute tape contact pressures. The core support includes a transducer core with an elongated contact surface positioned to extend transverse to the longitudinal axis of the support surfaces. An edge member is positioned adjacent the contact surface of the transducer core to control wear and direct airflow. The edge member includes a wear surface of a material with greater wear resistance than the transducer core. A second edge member is provided on the opposite side of the contact surface of the transducer core to accommodate multi-direction tape travel.

Abstract: A transducer assembly and a method for manufacturing same, the assembly for use in a transducer head, the transducer head for use in a data storage system including a magnetic medium. The assembly includes a transducer portion made from a material having a material property, and a cover portion made from a material having a material property substantially similar to the material property of the material of the transducer portion. The assembly further includes a single piece base portion made from a moldable material, the base portion including features for positioning the cover portion in proximity to the transducer portion so that the cover and transducer portions provide a surface for contacting the magnetic medium.

Abstract: A tape head and method for forming a tape head are disclosed. The tape head includes a matched support beam pair, each support beam having a tape head disposed on the support beam, each support beam further including engagement surfaces and a recessed area disposed between the engagement surfaces the matched pair being joined at the engagement surfaces, the recess areas providing a cable receptacle for framing a cable that is attached to the tape head. The tape head and method for forming a tape head that provides tape head assemblies with precise tape wrap angle setting, track-to-track registration, and head-to-head parallelism suitable for very high density recording. By attaching a read-after-write pair of magnetic recording heads to two rigid, precision U-shaped support beams, the tape heads can be an aligned and hold this alignment accuracy during assembly processing.

Abstract: Within a method for forming a magnetoresistive (MR) sensor element there is first provided a substrate. There is then formed over the substrate a first magnetoresistive (MR) layer having formed contacting the first magnetoresistive (MR) layer a magnetically biased first magnetic bias layer biased in a first magnetic bias direction with a first magnetic bias field strength. There is also formed separated from the first magnetoresistive (MR) layer by a spacer layer a second magnetoresistive (MR) layer having formed contacting the second magnetoresistive (MR) layer a magnetically un-biased second magnetic bias layer.

Abstract: A plurality of apparatuses and methods are provided for improving the manufacture and operational characteristics of thin magnetic film heads. First provided is an apparatus and method for bonding a beam and a magnetic head with optimal precision. Also included is a saw apparatus capable of dicing magnetic heads on an associated wafer in a manner that affords a planar operating surface on the magnetic head. Still yet, a specific head structure is provided which has single a groove that affords all of the benefits of the prior art head structures, but with only one action required during the thin-film head manufacturing process.

Abstract: The present invention provides a magnetic head including a plurality of magnetic head elements disposed on a head support in a direction across a magnetic tape and a plurality of connection terminals disposed on the head support, for each of the magnetic head elements, in a direction perpendicular to the signal recording surface of the magnetic tape. Even a large number of magnetic head elements can be electrically connected to an external circuit in an appropriate and simple manner.

Abstract: A matrix array of recording heads, wherein each head is independent from another both in terms of its magnetic circuit and excitation conductors. Each individual head has a planar magnetic circuit and an helical coil wrapped around the lower part of the magnetic circuit. The matrix array is collectively fabricated using full thin film technology on nonmagnetic substrates. Preferably, the heads are aligned in an oblique lattice with the write gaps aligned along rows and offset by a constant value along columns. Each individual head is connected to the control electronics through interconnects to the backside of the wafer, allowing independent control of the write parameters. The die forming the device is shaped on its edges and top surface to optimize head/medium positioning and minimize wear.

Abstract: A multi-track magnetoresistive (MR) tape head with precisely-aligned read/write (R/W) track-pairs and a method for fabrication on a monolithic substrate wherein a plurality of tape heads are fabricated from a single substrate wafer by using complete thin-film processing on both sides of the wafer. The recording elements are aligned with readers opposite writers on the other side, providing a method for fabricating a multi-track thin-film magnetoresistive tape head with precisely-aligned R/W track-pairs fabricated on a monolithic substrate. As used herein, the term monolithic denominates an undivided seamless piece. The wafer is built using modified standard thin-film processes for fabricating direct access storage device (DASD) heads and modified substrate lapping procedures. The gap-to-gap separation within each R/W track-pair is reduced to nearly the thickness of the substrate wafer, which is significantly less than conventional separations known in the art.

Abstract: A magnetic head assembly with dual parallelogram supporting structure device and method of making the same has a single or multiple track magnetic stripe read head transducer mounted to a support structure by a dual parallelogram spring structure. This dual spring structure allows the head to move perpendicularly and rotationally to the magnetic stripe while preventing the head from rotating in the y direction, namely, preventing lateral movement. The novel magnetic head assembly is produced using a rapid and accurate assembly without the use of mounting screws in single and multiple track configurations. The unique spring also reduces wear on the magnetic heads which increases the functional life of the unit. The simple construction allows inexpensive manufacture of the magnetic head assembly, yet the durability of available manufacturing materials and the structure of the spring provide the magnetic head assembly with a long useful life, requiring little or no maintenance expense or upkeep.

Abstract: A magnetic head is provided for use with magnetic recording media of varying stiffness. The head includes a first and a second elongated support spaced apart on a facing surface with support surfaces extending along a longitudinal axis. A core support is positioned between the two elongated supports and is wider than the support surfaces to distribute tape contact pressures. The core support includes a transducer core with an elongated contact surface positioned to extend transverse to the longitudinal axis of the support surfaces. An edge member is positioned adjacent the contact surface of the transducer core to control wear and direct airflow. The edge member includes a wear surface of a material with greater wear resistance than the transducer core. A second edge member is provided on the opposite side of the contact surface of the transducer core to accommodate multi-direction tape travel.

Abstract: A magnetic tape head assembly is provided along with a method of manufacturing a magnetic tape head. The magnetic tape head comprises a cluster of thin film inductive or magnetoresistive read/write elements, an I-block preferably made of a ceramic material, a U-bar also preferably made of a ceramic material, and a base preferably made of a ceramic or metal material. The U-bar has a substantially U-shaped form providing a recess into which the I-block and the cluster are fixed. A bottom surface of the U-bar, I-block, and cluster is fixed to the base to form a slider assembly. A top surface of the U-bar, I-block, and cluster is machined or etched to form one or more tape bearing surfaces thereon.

Abstract: A magnetic tape head assembly with enclosed through slots to eliminate an air bearing at high tape speeds and lower operating tape tensions is provided. In one embodiment of the present invention, the magnetic tape head comprises a recording gap, containing read/write elements, across the width of the head and slots exposed to the tape head surface that faces the plane of the tape. These slots run through the head approximately perpendicular to the plane of the tape and are open to ambient pressure at a tape head surface other than the surface facing the plane of the tape. These slots are aligned with the read/write elements along the recording gap.

Abstract: A plurality of magnetic head elements, each having a terminal portion, are arranged on a first face of the head chip. A wiring board member is electrically connected to the respective terminal portions of the magnetic head elements. A pair of side chips sandwich the head chip from both sides of the first face. Each of the side chips has faces forming a recessed portion which faces with at least the terminal portions of the magnetic head elements.

Abstract: An assembly including at least one chip with an embedded magnetic head. A base and/or a cover includes at least partially a housing in which the at least one chip is embedded. Such an assembly may find particular application to a magnetic recording system.

Abstract: A magnetic head that is excellently adapted to a magnetic core reduced in thickness. When a magnetic core which is reduced in thickness for adaptation to a high recording density is inserted in an opening of a size conventionally formed in a magnetic head of a standard recording density type, a spacer made of a material equivalent or identical to that of a slider is inserted between the magnetic core and the inner wall of the opening. The magnetic core is positioned by means of projections formed on the inner wall of the opening and the spacer. Then, glass as a sealing material is poured into gaps formed in the opening by the magnetic core, the inner wall of the opening and the spacer. The inserted spacer reduces a space volume for the glass to be poured. Further, since the spacer is made of the material equivalent or identical to that of the slider, a partial abrasion at a sliding surface of the slider sliding on a recording medium can be eliminated.

Abstract: A magnetic head in which a holder (25) of a nonmagnetic material is connected to a magnetic head core (20) by bonding, wherein protrusion portions (26 and 27) are integrally formed on the holder (25) so that the protrusion portions (26 and 27) are made to pass through the magnetic head core (20) and top end portions (26a and 27a) of the protrusion portions (26 and 27) are thermally fusion-bonded to the magnetic head core (20) to thereby connect the holder (25) to the magnetic head core (20).

Abstract: A magnetic head includes a slider including rail portions for sliding on a magnetic medium. One rail portion includes inner side walls which define a rectangular hole, and a head core body having magnetic gaps is sealed in the hole with a sealing agent. Projections are formed on the inner side walls to enable proper core positioning in the hole. Multiple projections can be formed on the respective side walls. The projections can have different heights and also be spaced from the head core body in the hole. The projections can include first projections having a height H.sub.1 and second projections having a height H.sub.2 that satisfy the equation 1.2.times.H.sub.1 .ltoreq.H.sub.2 .ltoreq.5.0 H.sub.1. Also, the relative heights of the first and second projections can be related by the inequality, H.sub.2 -H.sub.1 >C-w, in which C is the spacing between projections on opposed inner side walls, and w is the width of the head core body in a direction between the opposed inner side walls.

Abstract: Disclosed is a dimple magnetic recording head in a transducer assembly for linear tape drives. The dimple head has a flat transducing surface extending laterally a partial width of the magnetic recording tape. Two parallel tape support surfaces extend laterally the full width of the magnetic recording tape, positioned on either side of and spaced from the dimple head in the longitudinal direction of the magnetic recording tape. The tape support surfaces form a plane, and the dimple head flat transducing surface is parallel to the tape support surface plane and projects above the tape support surface plane to form tape wrap angles with respect to the tape support surfaces within a range of approximately 1/2 degree to 2.5 degrees. The dimple magnetic tape head is mass produced by lapping a row of transducers on a substrate to form a flat transducing surface. The row of substrate elements is then diced into separate substrate elements.

Abstract: The present invention relates to a wireless apparatus for transferring information between computers. The communication device uses a diskette that transmits and receives information by using radio frequency. The diskette includes receiving and transmitting circuitry which is used in conjunction with software to facilitate the file transfer.

Abstract: An improved magnetic head is disclosed for stable pole tip to tape contact pressure despite head wear and tape tension variations. A magnetic head which contacts the magnetic tape comprises a ferromagnetic body. A recess is provided in this ferromagnetic body. A ferromagnetic core has pole tips which are located in the recess and which are arranged for contact with the magnetic tape. A non-magnetic material is arranged along each side of the magnetic core pole tips in the recess. Relative hardnesses of the ferromagnetic body, ferromagnetic core pole tips, and nonmagnetic material are chosen so that as the tape wears away on contact surfaces of the magnetic core pole tips, non-magnetic material, and ferromagnetic body, the core pole tips protrude relative to adjacent portions of the ferromagnetic body and the non-magnetic material so that the tape rides on the protruding pole tips of the core.