Patent US5022028A successfully refreshed from Google Patents.
US5065271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thin film magnetic head apparatus and method of manufacturing the same
Assignee: Mitsubishi Electric Corp
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Filing: 1990-02-26
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Granted: 1991-11-12
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Expires: 2010-02-26
Abstract
Abstract A small light-weight thin film magnetic head apparatus for a rigid disk or a floppy disc. The apparatus includes a magnetic head formed directly on a distal end of a suspension as a thin layer, one end of the suspension being supported by an arm. This magnetic head is very small-sized and light-weight and has a head gap in direct contact with a recording medium, increasing the recording density and the read/write speed. Because of its reduced weight of the thin film magnetic head, a remarkably improved degree of followability with respect to the recording medium can be achieved. A method of manufacturing this magnetic head apparatus is also disclosed.
Inventors
- 👤 Tsukasa Matsuura
- 👤 Jun Fujita
- 👤 Manabu Uchizawa
- 👤 Shigehisa Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:40
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/127; G11B5/187; G11B5/31; G11B5/3103; G11B5/48; G11B5/4806; G11B5/484
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
92 words
A thin film magnetic head apparatus, comprising; (a) a suspension held by an arm; (b) a thin film formed magnetic head formed directly on and in physical contact with a distal end of said suspension for storing data in a magnetic recording medium and reading the stored data from the magnetic recording medium; (c) a head amplifier formed directly on and in physical contact with said distal end; and (d) said magnetic head and head amplifier being located on the same surface of said suspension and being directly adjacent to each other.
Claim 2
Dependent Claim
92 words
A thin film magnetic head apparatus, comprising; (a) a suspension held by an arm; (b) a thin film formed magnetic head formed directly on and in physical contact with a distal end of said suspension for storing data in a magnetic recording medium and reading the stored data from the magnetic recording medium; (c) a head amplifier formed directly on and in physical contact with said distal end; and (d) said magnetic head and head amplifier being located on the same surface of said suspension and being directly adjacent to each other.
Claim 3
Dependent Claim
45 words
A thin film magnetic head apparatus according to claim 1, further including an insulating layer covering said head amplifier and said magnetic head, with a portion of said magnetic head being exposed so that it may be in operative association with the magnetic recording medium.
Claim 4
Dependent Claim
19 words
A thin film magnetic head apparatus according to claim 2, wherein said insulating contacts a portion of said suspension.
Claim 5
Dependent Claim
63 words
A thin film magnetic head apparatus, comprising; (a) a suspension held by an arm; and (b) a thin film magnetic head formed directly on a distal end of said suspension integrally therewith, wherein an intermediate layer of silicon or ceramic is disposed between said thin film magnetic head and said suspension to improve adhesion between said thin film magnetic head and said suspension.
Claim 6
Dependent Claim
63 words
A thin film magnetic head apparatus, comprising; (a) a suspension held by an arm; and (b) a thin film magnetic head formed directly on a distal end of said suspension integrally therewith, wherein an intermediate layer of silicon or ceramic is disposed between said thin film magnetic head and said suspension to improve adhesion between said thin film magnetic head and said suspension.
Claim 7
Dependent Claim
34 words
A thin film magnetic head apparatus of claim 4, further including a head amplifier located at said distal end and wherein, said intermediate layer improves adhesion of between said head amplifier and said suspension.
Claim 8
Dependent Claim
45 words
A thin film magnetic head apparatus according to claim 5 further including an insulating layer covering said head amplifier and said magnetic head, with a portion of said magnetic head being exposed so that it may be in operative association with the magnetic recording medium.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-11-11 | 1995-05-13 | 1995-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-11 | 1999-05-13 | 1999-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-11 | 2003-05-13 | 2003-11-12 | $7700.00 | Window Closed / Lapsed |