-
公开(公告)号：DE69616645D1
公开(公告)日：2001-12-13
申请号：DE69616645
申请日：1996-04-22
Applicant: IBM
Inventor： ABOAF JOSEPH ADAM , DENISON EDWARD VIRGIL , FRIEDMAN JULES DAVID , KAHWATY VINCENT NOEL , KLUGE II
Abstract: A head (10) is provided for reading and writing to tape media (48) along a tape head face. The tape head comprises a plurality of modules, each module comprising a read element (54) and a write element (52) spaced apart and terminating at the tape head face and formed over a substrate (12). The read element comprises a soft film bias layer (24) and a hard film bias layer (25) butted against the SFB layer. The write element comprises two pole tips (14,16) spaced apart by a gap (22). The tape head further includes a plurality of activating conducting coil turns (20) operatively associated with the write element and covered by a cross-linked photoresist and positioned between the gap and one of the pole tips and set back from the tape head face. The tape head has at least one of the following elements: (a) a wear shield (34) between the read element and the write element for limiting wear of the gap between the two pole tips, the wear shield being grounded for decoupling read and write functions of the tape head, for allowing same module read/servo/write functions simultaneously, and for grounding static charge from the tape media; (b) a layer of electrically conductive and corrosion-resistant material (62), such as rhodium, under the hard film bias layer to reduce its resistance; and (c) a non-activating dummy coil turn (120,220) closer to the pole tips than the activating coil turns for defining a forward termination of the cross-linked photoresist (38a) between the activating coil turns and the tape head face to thereby provide improved ease of processability.
-
Patent Agency Ranking
公开(公告)号：DE69616645T2
公开(公告)日：2002-08-01
申请号：DE69616645
申请日：1996-04-22
Applicant: IBM
Inventor： ABOAF JOSEPH ADAM , DENISON EDWARD VIRGIL , FRIEDMAN JULES DAVID , KAHWATY VINCENT NOEL , KLUGE II
Abstract: A head (10) is provided for reading and writing to tape media (48) along a tape head face. The tape head comprises a plurality of modules, each module comprising a read element (54) and a write element (52) spaced apart and terminating at the tape head face and formed over a substrate (12). The read element comprises a soft film bias layer (24) and a hard film bias layer (25) butted against the SFB layer. The write element comprises two pole tips (14,16) spaced apart by a gap (22). The tape head further includes a plurality of activating conducting coil turns (20) operatively associated with the write element and covered by a cross-linked photoresist and positioned between the gap and one of the pole tips and set back from the tape head face. The tape head has at least one of the following elements: (a) a wear shield (34) between the read element and the write element for limiting wear of the gap between the two pole tips, the wear shield being grounded for decoupling read and write functions of the tape head, for allowing same module read/servo/write functions simultaneously, and for grounding static charge from the tape media; (b) a layer of electrically conductive and corrosion-resistant material (62), such as rhodium, under the hard film bias layer to reduce its resistance; and (c) a non-activating dummy coil turn (120,220) closer to the pole tips than the activating coil turns for defining a forward termination of the cross-linked photoresist (38a) between the activating coil turns and the tape head face to thereby provide improved ease of processability.
-
公开(公告)号：DE69127063T2
公开(公告)日：1998-02-12
申请号：DE69127063
申请日：1991-12-04
Applicant: IBM
Inventor： DENISON EDWARD VIRGIL , KAHWATY VINCENT NOEL , STERN GUSTAVE CHRISTIAN , STEVIN GERALD , ZAMMIT ROBERT PAUL
Abstract: In a magnetic recording system tape is transported bi-directionally across the interleaved head. The interleaved head includes two modules, each module having a plurality of alternate read and write transducer gaps spaced apart along a single gap line transverse to the movement of the magnetic tape. The two modules are placed together so that the write gaps of one module are aligned with the read gaps of the other module. Each module is formed on a nickel-zinc ferrite substrate by deposition of magneto-resistive material to form read transducer elements 69 and deposition of conductor material to form read conductors 74, 76 and 78 and write coils 80. A nickel zinc ferrite closure piece is secured to the substrate to complete the module. In order to provide leveling across the write and read transducers of the module, write back gap islands 90, 92 are provided in the back gap regions 68 of the write coils made of the same material with the same thickness as the magneto resistive element and the conductors interconnecting the magneto resistive element to the read/write network of the tape drive.
-
公开(公告)号：DE69127063D1
公开(公告)日：1997-09-04
申请号：DE69127063
申请日：1991-12-04
Applicant: IBM
Inventor： DENISON EDWARD VIRGIL , KAHWATY VINCENT NOEL , STERN GUSTAVE CHRISTIAN , STEVIN GERALD , ZAMMIT ROBERT PAUL
Abstract: In a magnetic recording system tape is transported bi-directionally across the interleaved head. The interleaved head includes two modules, each module having a plurality of alternate read and write transducer gaps spaced apart along a single gap line transverse to the movement of the magnetic tape. The two modules are placed together so that the write gaps of one module are aligned with the read gaps of the other module. Each module is formed on a nickel-zinc ferrite substrate by deposition of magneto-resistive material to form read transducer elements 69 and deposition of conductor material to form read conductors 74, 76 and 78 and write coils 80. A nickel zinc ferrite closure piece is secured to the substrate to complete the module. In order to provide leveling across the write and read transducers of the module, write back gap islands 90, 92 are provided in the back gap regions 68 of the write coils made of the same material with the same thickness as the magneto resistive element and the conductors interconnecting the magneto resistive element to the read/write network of the tape drive.
-
公开(公告)号：CA2064641C
公开(公告)日：1998-09-22
申请号：CA2064641
申请日：1992-04-01
Applicant: IBM
Inventor： ABOAF JOSEPH ADAM , DENISON EDWARD VIRGIL , KAHWATY VINCENT NOEL , STEVING GERALD
Abstract: An interleaved bi-directional magnetic tape head for contact recording can have a poletip enhanced by providing a thin film of a soft magnetic material deposited onto a magnetic ferrite substrate. The second pole piece is a thin film of the soft magnetic material. A closure block of a non-magnetic ceramic encloses the layers together with leveling insulation layers and a deposited activating conductor turns. The stripe poletip deposited onto the magnetic ferrite extends for a distance just short of the first conductor turn and provides a balancing of the saturation moment of the pole pieces and provides for better recording capability, especially when operating in a trailing magnetic ferrite mode.
-
公开(公告)号：CA2054579C
公开(公告)日：1995-09-26
申请号：CA2054579
申请日：1991-10-31
Applicant: IBM
Inventor： DENISON EDWARD VIRGIL , KAHWATY VINCENT NOEL , STERN GUSTAVE CHRISTIAN , STEVING GERALD , ZAMMIT ROBERT PAUL
Abstract: An interleaved head is disclosed for reading and writing data transitions onto a magnetic tape. A magnetic recording system is disclosed for the bi-directional transportation of the tape media across the interleaved head. A controller controls the tape drive in a reel-to-reel format to accomplish the bi-directional motion of the tape media. The interleaved head includes two modules with each module having a plurality of alternating read and write transducers alternately spaced apart along a single line placed transverse to the movement of the magnetic tape. The two modules are placed together such that the write gaps of one module are aligned with the read gaps of the other module. Each read module includes the magneto-resistive element. Each write transducer includes a thin film conductor driving a nickel zinc ferrite substrate as one pole piece and a nickel zinc closure piece as the second pole piece. In order to provide leveling across the write transducers of the module, write back gap islands are provided in the back gap regions of the write transducer made of the same material with the same thickness as the magneto resistive element and the conductors interconnecting the magneto resistive element to the read/write network of the tape drive.
-
-
-
-
-
Search Results
6
records
(took 0.016 seconds)
