Dynamic magnetic information storage or retrieval – Head – Core
Patent
1997-05-21
1999-10-26
Evans, Jefferson
Dynamic magnetic information storage or retrieval
Head
Core
360122, G11B 5147
Patent
active
059738910
ABSTRACT:
A data transducer, process for fabricating the same and method for writing data to a magnetic storage media, such as magnetic tape, utilizing the bottom (or lower) pole as the trailing edge of a write head. This lower trailing edge pole may be formed of sputtered material such as FeN or FeN-based alloys (which are particularly sensitive to the topography over which they are deposited) since it can be formed on the substantially planar substrate instead of overlying the write coil and its associated insulation layers. Moreover, the bottom pole can be processed using faster and less expensive wet-etching techniques because its width and edge-contours are not critical dimensions which determine recording characteristics. Utilizing the relatively wider and more planar bottom pole as the trailing edge of the write head results in a straighter magnetic transition on the media without the curved edges associated with the fringe fields at the edges of the narrower top pole.
REFERENCES:
patent: 4819111 (1989-04-01), Keel et al.
patent: 5465475 (1995-11-01), Kinoshita et al.
patent: 5530608 (1996-06-01), Aboaf et al.
patent: 5541793 (1996-07-01), Schwarz
patent: 5578342 (1996-11-01), Tran et al.
patent: 5594608 (1997-01-01), Dee
patent: 5615069 (1997-03-01), Slade et al.
Quantum Corporation, A Quantum White Paper, "The DLT.TM. 7000 Tape Drive: A New Level of Performance", http://www.quantum.com/products/whitepapers/dlt/dlt7000.HTM, published on or before May 21, 1997.
Quantum Corporation, Technical Information papers, "DLT.TM. Tape Drives Meet Critical Needs for Data Backup", http://www.quantum.com . . . itepapers/dltips.html, published on or before May 21, 1997.
IBM Corporation, "The Era of Magnetoresistive Heads", http://www.almaden.ibm.com/storage/oem/tech/eraheads.htm, published on or before May 21, 1997.
Quantum Corporation, A Quantum White Paper, "Magnetoresistive (MR) Head Technology", http://www.quantum.com . . . s/whitepapers/MR-head/, published on or before May 21, 1997.
D. M. Cannon, et al., "Design and Performance of a Magnetic Head for a High-Density Tape Drive", IBM J. Res. Develop , vol. 30, No. 3, May 1986.
Seagate, Magnetoresistive Heads Technology Paper, "MR Heads: The Next Step in Capacity and Performance", http://www.seagate.com/support/dis/papers/mr-techp.shtml, Mar. 1997.
Seagate, Technical Fact Sheet, "Magneto-Resistive Heads", htp://www.seagate.com/support/disc/papers/mrheadfs.shtml, Mar. 1997.
Read-Rite Corporation, Technology, "Inside the Read-Rite Head", http://www.readrite.com/aahtml/tech/inrrhead.htm, published on or before May 21, 1997.
Read-Rite Corporation, News Release, Read-Rite Demonstrates Spin Valve Recording Head Technology, http://www.readrite.com/aahtml
r/spin.htm, published on or before May 21, 1997.
Evans Jefferson
Kelly Robert H.
Kubida William J.
Quantum Corporation
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