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公开(公告)号：US20240105218A1
公开(公告)日：2024-03-28
申请号：US17954089
申请日：2022-09-27
Applicant: Western Digital Technologies, Inc.
Inventor： David J. SEAGLE , Robert G. BISKEBORN
CPC classification number: G11B5/255 , G11B5/00813
Abstract: The present disclosure generally relates to a tape head and a tape head drive including a tape head. The tape head comprises at least one same gap verify (SGV) module comprising a closure, a substrate, and a plurality of write transducer and read transducer pairs disposed between the substrate and the closure. The write transducer and the read transducer of each pair are aligned in a first direction and spaced a distance in the downtrack direction of about 5 μm to about 20 μm. A first overcoat is disposed over each write transducer at a media facing surface (MFS), and a second overcoat is disposed over each read transducer at the MFS. The first and second overcoats may comprise different materials, and are deposited during different processes.
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公开(公告)号：US20220415344A1
公开(公告)日：2022-12-29
申请号：US17359046
申请日：2021-06-25
Applicant: Western Digital Technologies, Inc.
Inventor： David J. SEAGLE , Alexander GONCHAROV , Robert G. BISKEBORN
Abstract: The present disclosure generally relates to a tape drive including a tape head. The tape head comprises at least one same gap verify (SGV) module comprising a plurality of write transducer and read transducer pairs disposed on a substrate. Each pair comprises a null shield disposed between the write transducer and the read transducer. One or more of a position between the write transducer and the read transducer of each pair, a width, a height, a thickness, and a permeability of the null shield is adjusted to create a null region, and the read transducer is disposed in the null region. The SGV module is configured to write data to a tape using the write transducer of each pair and read verify the data written on the tape using the read transducer of each pair such that the write transducer and read transducer of each pair are concurrently operable.
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公开(公告)号：US20220319540A1
公开(公告)日：2022-10-06
申请号：US17232704
申请日：2021-04-16
Applicant: Western Digital Technologies, Inc.
Inventor： Robert G. BISKEBORN , David J. SEAGLE
Abstract: The present disclosure generally relates to a tape head and a tape head drive including a tape head. The tape head comprises at least one same gap verify (SGV) module comprising a closure, a substrate, and a plurality of write transducer and read transducer pairs. The write transducer and the read transducer of each pair are spaced a first distance in a first direction of about 5 μm to about 20 μm. The SGV module head assembly is configured to write data to a tape using the write transducer of each pair and read verify the data written on the tape using the read transducer of each pair such that the write transducer and read transducer of each pair are concurrently operable. In some embodiments, the SGV module head assembly is further configured for dynamic tilting to enable correcting of mis-registration caused by tape lateral dimension changes.
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公开(公告)号：US20240379125A1
公开(公告)日：2024-11-14
申请号：US18229078
申请日：2023-08-01
Applicant: Western Digital Technologies, Inc.
Inventor： Robert G. BISKEBORN , David J. SEAGLE , Diane L. BROWN
Abstract: The present disclosure generally relates to a magnetic recording device comprising a magnetic recording head. The magnetic recording device comprises a write head and a read head. The write head comprising a trailing shield, a main pole, and a leading shield, and the read head comprises a first shield, a second shield, and a magnetic sensor disposed between the first and second shields. In some embodiments, a shield is disposed between the leading shield and the first shield. A central axis of the write head is aligned with a central axis of the read head. The read head is spaced a distance of about 5 μm to about 20 μm from the write head such that the magnetic recording head is controllable to write data to a media using the write head and read verify the data using the read head.
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公开(公告)号：US20220415355A1
公开(公告)日：2022-12-29
申请号：US17355590
申请日：2021-06-23
Applicant: Western Digital Technologies, Inc.
Inventor： David J. SEAGLE , Alexander GONCHAROV , Robert G. BISKEBORN
Abstract: The present disclosure generally relates to a tape drive including a tape head. The tape head comprises at least one same gap verify (SGV) module comprising a plurality of write transducer and read transducer pairs disposed on a substrate. In each pair, the write transducer comprises a write pole having a height, and the read transducer comprises a first shield disposed adjacent to the write pole. The write pole and the first shield of each pair are spaced apart a distance greater than or equal to about 20% of the height of the write pole. The SGV module is configured to write data to a tape using the write transducer of each pair and read verify the data written on the tape using the read transducer of each pair such that the write transducer and read transducer of each pair are concurrently operable.
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Patent Agency Ranking
公开(公告)号：US20200227078A1
公开(公告)日：2020-07-16
申请号：US16830222
申请日：2020-03-25
Applicant: Western Digital Technologies, Inc.
Inventor： David J. SEAGLE
Abstract: The present disclosure generally relates to tape heads for use in a tape drive system. The tape head includes a plurality of servo elements and a plurality of data elements disposed between the servo elements. An electrostrictive material is present in the tape head. Electrodes are coupled to the electrostrictive material to permit a voltage to be distributed across the electrostrictive material. The voltage causes the electrostrictive material to expand, and thus expand the tape head. By expanding the tape head by adding voltage, or contracting the tape head by lowering voltage, the spacing between adjacent data elements can be adjusted to match the spacing between adjacent data tracks on a tape.
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公开(公告)号：US20250140288A1
公开(公告)日：2025-05-01
申请号：US18385756
申请日：2023-10-31
Applicant: Western Digital Technologies, Inc.
Inventor： Robert G. BISKEBORN , David J. SEAGLE
Abstract: The present disclosure generally relates to a tape and a tape drive comprising a tape head and a controller. The tape drive comprises a tape comprising three data bands and four servo tracks, a servo track of the four servo tracks being disposed between adjacent data bands, one or more tape head modules, each tape head module comprising a plurality of data elements and two or more servo element pairs, and a controller configured to control each of the one or more tape head modules to write data to and read data from the tape. Each data band has a width of about one-third a total width of the tape, such as about 3800 μm to about 3900 μm. The three data bands and four servo tracks span the total width of the tape.
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公开(公告)号：US20240312482A1
公开(公告)日：2024-09-19
申请号：US18227510
申请日：2023-07-28
Applicant: Western Digital Technologies, Inc.
Inventor： David J. SEAGLE , Robert G. BISKEBORN
CPC classification number: G11B5/11 , G11B5/02 , G11B5/3967 , G11B5/739
Abstract: The present disclosure generally relates to a tape head and a tape head drive including a tape head. The tape head comprises at least one same gap verify (SGV) module comprising a plurality of write transducer and read transducer pairs. Each write transducer is coupled to writer bonding pads via writer leads, and each read transducer is coupled to reading bonding pads via reader leads. An isolation shield is disposed between the write transducer and read transducer such that the isolation shield is disposed between each writer lead and each reader lead. The isolation shield acts as a Faraday cage to reduce cross-talk between the write and read transducers. The SGV module is configured to write data to a tape using the write transducers and read verify the data written on the tape using the read transducers such that the write transducers and read transducers are concurrently operable.
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9.发明公开公开(公告)号：US20240282335A1
公开(公告)日：2024-08-22
申请号：US18227513
申请日：2023-07-28
Applicant: Western Digital Technologies, Inc.
Inventor： David J. SEAGLE , Diane L. BROWN
CPC classification number: G11B5/4893 , G11B5/00813 , G11B5/187
Abstract: The present disclosure generally relates to a tape head and a tape drive including a tape head. The tape head comprises a plurality of data heads disposed at a media facing surface (MFS) and one or more servo heads disposed at the MFS. The plurality of data heads each individually have a first stripe height extending from the MFS to a back edge of a module. The one or more servo heads each individually have a second stripe height extending from the MFS towards the back edge of the module. The second stripe height is about 10% to about 75% less than the first stripe height. By making the second stripe height less than the first stripe height, the area of the servo heads is reduced while the resistance of the sensors of the servo heads is increased.
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10.发明公开公开(公告)号：US20230253014A1
公开(公告)日：2023-08-10
申请号：US17667242
申请日：2022-02-08
Applicant: Western Digital Technologies, Inc.
Inventor： Robert G. BISKEBORN , David J. SEAGLE , Diane L. BROWN
IPC: G11B21/02
CPC classification number: G11B21/02
Abstract: The present disclosure is generally related to a tape head and a tape drive including a tape head. The tape head comprises one or more head assemblies, each head assembly comprising a plurality of write heads aligned in a row, at least one writer servo head aligned with the row of write heads, a plurality of read heads aligned in a row, and at least one reader servo head aligned with the row of read heads. The writer servo head and the reader servo head are independently controllable and are configured to operate concurrently. The tape head is able to accurately and independently position the write heads using the writer servo head(s) when writing data to a tape and position the read heads using the reader servo head(s) when reading data from the tape, even if the write heads and read heads are or become mis-aligned.
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