US5073242A
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Method of making integrated magnetic read/write head/flexure/conductor structure
Assignee: Seagate Technology LLC
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Filing: 1990-12-21
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Granted: 1991-12-17
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Expires: 2010-12-21
Abstract
Abstract An integrated head/flexure/conductor structure for the reading and writing of information with respect to a relatively moving medium, such as a disk or drum, and a method for manufacturing the same. The proposed structure takes the form of a micro-dimension, elongate, dielectric flexure body, and embedded within such body both magnetic read/write pole structure, and electrical coil and conductor structure operatively associated with the pole structure. The flexure body and the embedded constituents are formed on an atom-by-atom basis utilizing one or more conventioanl material-deposition processes.
Inventors
- 👤 Harold J. Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:16
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/4806; G11B5/484; G11B5/127; G11B5/31; G11B5/3103; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49021; Y10T29/49032; Y10T29/49036; Y10T29/49041; Y10T29/49043; Y10T29/4906; Y10T29/49064
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
77 words
A method of making an integrated, unitary read/write head/flexure/conductor structure for the reading and writing of information with respect to a relatively moving recording medium, said method comprising forming in plural stages, and by a deposition process, an elongate dielectric flexure body, and creating within such body, and also by a deposition process, in plural stages interspersed with the forming stages, magnetic read/write pole structure, and electrical coil and conductor means operatively associated with such pole structure.
Claim 2
Independent Claim
77 words
A method of making an integrated, unitary read/write head/flexure/conductor structure for the reading and writing of information with respect to a relatively moving recording medium, said method comprising forming in plural stages, and by a deposition process, an elongate dielectric flexure body, and creating within such body, and also by a deposition process, in plural stages interspersed with the forming stages, magnetic read/write pole structure, and electrical coil and conductor means operatively associated with such pole structure.
Claim 3
Dependent Claim
15 words
The method of claim 1, wherein such flexure body is formed of sputtered aluminum oxide.
Claim 4
Independent Claim
56 words
The method of claims 1 or 2 which results in a final unit having an overall length in the range of about 0.2- to about 0.5-inches, an overall width in the range of about 4- to about 20-mils, a thickness in the range of about 15- to about 65-microns, and a mass of about 100 micrograms.
Claim 5
Independent Claim
25 words
The method of claims 1 or 2 which results in a final unit wherein the read/write pole structure takes the form of a probe-type structure.
Claim 6
Independent Claim
25 words
The method of claims 1 or 2 which results in a final unit wherein the read/write pole structure takes the form of a ring-type structure.
Claim 7
Independent Claim
142 words
A method of making an integrated, unitary read/write head/flexure/conductor structure of the reading and writing of information with respect to a relatively moving recording medium, said method comprising forming on a first planar surface of a nonmagnetic host wafer, by a deposition process, and in plural stages, an elongate dielectric flexure body, and during said forming, creating within such body, in plural stages which are interspersed with the forming stages, and also by a deposition process, magnetic yoke structure, and an electrical coil and conductor means operatively associated with such yoke structure, exposing an end surface of such body and yoke structure in a newly formed second planar surface which is generally orthogonal to such first planar surfaced, and fabricating on such second planar surface, by a deposition process, a pole structure magnetically coupled to an operatively associated with such yoke structure.
Claim 8
Independent Claim
142 words
A method of making an integrated, unitary read/write head/flexure/conductor structure of the reading and writing of information with respect to a relatively moving recording medium, said method comprising forming on a first planar surface of a nonmagnetic host wafer, by a deposition process, and in plural stages, an elongate dielectric flexure body, and during said forming, creating within such body, in plural stages which are interspersed with the forming stages, and also by a deposition process, magnetic yoke structure, and an electrical coil and conductor means operatively associated with such yoke structure, exposing an end surface of such body and yoke structure in a newly formed second planar surface which is generally orthogonal to such first planar surfaced, and fabricating on such second planar surface, by a deposition process, a pole structure magnetically coupled to an operatively associated with such yoke structure.
Claim 9
Dependent Claim
15 words
The method of claim 6, wherein the flexure body is formed of sputtered aluminum oxide.
Claim 10
Dependent Claim
15 words
The method of claim 6, wherein the flexure body is formed of sputtered silicon dioxide.
Claim 11
Dependent Claim
23 words
The method of claim 6 which results in a final unit wherein the read/write pole structure takes the form of a probe-type structure.
Claim 12
Dependent Claim
23 words
The method of claim 6 which results in a final unit wherein the read/write pole structure takes the form of a ring-type structure.
Claim 13
Independent Claim
110 words
A method of making plural integrated, unitary read/write head/flexure/conductor structures each for the reading and writing of information with respect to a relatively moving recoding medium, said method comprising forming in plural stages, and by a deposition process, plural side-by-side adjacent, elongate dielectric flexure bodies whose respective widths are defined by etchable wall-like stripes that extend between the separate adjacent bodies, creating within each such body, in plural stages interspersed with the forming stages, and also by a deposition process, magnetic read/write pole structure, and electrical coil and conductor means operatively associated with such pole structure, and following said creating, etching such stripes as a step toward freeing individual bodies.
Claim 14
Independent Claim
110 words
A method of making plural integrated, unitary read/write head/flexure/conductor structures each for the reading and writing of information with respect to a relatively moving recoding medium, said method comprising forming in plural stages, and by a deposition process, plural side-by-side adjacent, elongate dielectric flexure bodies whose respective widths are defined by etchable wall-like stripes that extend between the separate adjacent bodies, creating within each such body, in plural stages interspersed with the forming stages, and also by a deposition process, magnetic read/write pole structure, and electrical coil and conductor means operatively associated with such pole structure, and following said creating, etching such stripes as a step toward freeing individual bodies.
Claim 15
Dependent Claim
16 words
The method of claim 11, wherein such wall-like stripes are created through the deposition of copper.
Claim 16
Independent Claim
149 words
A method of making on a supporting substrate an integrated, unitary, read/write head/flexure/conductor structure for the reading and writing of information with respect to a relatively moving recording medium, said method comprising preparing, on a surface in such a substrate, an etchable layer, forming on such layer, in plural stags, and by a deposition process, an elongate dielectric flexure body whose with is defined by etchable wall-like stripes that extend on the layer along opposite sides of the body, with such stripes being etchable under the same circumstances that such layer is etchable, creating within such body, in plural stages which are interspersed with the forming stages, and also by a deposition process, magnetic read/write pole structure, and electrical coil and conductor means operatively associated with such pole structure, and following said preparing, forming and creating, etching such layer and such stripes to free the body from the substrate.
Claim 17
Independent Claim
149 words
A method of making on a supporting substrate an integrated, unitary, read/write head/flexure/conductor structure for the reading and writing of information with respect to a relatively moving recording medium, said method comprising preparing, on a surface in such a substrate, an etchable layer, forming on such layer, in plural stags, and by a deposition process, an elongate dielectric flexure body whose with is defined by etchable wall-like stripes that extend on the layer along opposite sides of the body, with such stripes being etchable under the same circumstances that such layer is etchable, creating within such body, in plural stages which are interspersed with the forming stages, and also by a deposition process, magnetic read/write pole structure, and electrical coil and conductor means operatively associated with such pole structure, and following said preparing, forming and creating, etching such layer and such stripes to free the body from the substrate.
Claim 18
Dependent Claim
15 words
The method of claim 13, wherein the flexure body is formed of sputtered aluminum oxide.
Claim 19
Dependent Claim
15 words
The method of claim 13, wherein the flexure body is formed of sputtered silicon dioxide.
Claim 20
Dependent Claim
23 words
The method of claim 13 which results in a final unit wherein the read/write pole structure takes the form of a probe-type structure.
Claim 21
Dependent Claim
23 words
The method of claim 13 which results in a final unit wherein the read/write pole structure takes the form of a rig-type structure.
Claim 22
Independent Claim
113 words
A method of making on a supporting substrate an integrated, unitary, read/write head/flexure/conductor structure for the reading and writing of information with respect to a relatively moving recording medium, said method comprising preparing on a surface in such a substrate, an etchable layer, forming on such layer, in plural stages, and by a deposition process, an elongate, dielectric flexure body; creating within such body, in plural stages which are interspersed with the forming stages, and also by a deposition process, magnetic read/write pole structure, and electrical coil and conductor means operatively associated with such pole structure, and following said preparing, forming and creating, etching such layer to free the body from the substrate.
Claim 23
Independent Claim
113 words
A method of making on a supporting substrate an integrated, unitary, read/write head/flexure/conductor structure for the reading and writing of information with respect to a relatively moving recording medium, said method comprising preparing on a surface in such a substrate, an etchable layer, forming on such layer, in plural stages, and by a deposition process, an elongate, dielectric flexure body; creating within such body, in plural stages which are interspersed with the forming stages, and also by a deposition process, magnetic read/write pole structure, and electrical coil and conductor means operatively associated with such pole structure, and following said preparing, forming and creating, etching such layer to free the body from the substrate.
Claim 24
Dependent Claim
17 words
The method of claim 18, wherein such layer is created through steps involving the deposition of copper.
Claim 25
Independent Claim
142 words
A method of making on a supporting substrate plural, integrated, unitary read/write head/flexure/conductor structures, each for the reading and writing of information with respect to a relatively moving recoding medium, said method comprising preparing, on such a substrate, an etchable layer, forming on such layer, in plural stages, and by a deposition process, plural, side-by-side adjacent, elongate, dielectric flexure bodies, one set of sides in which rests on such layer, and whose respective widths are defined by etchable, wall-like stripes that extend between and separate adjacent bodies, creating within each such body, in plural stages interspersed with the forming stages, and also by a deposition process, magnetic read/write pole structure, and electrical coil and conductor means operatively associated with such pole structure, and following said preparing, forming and creating, etching such layer and such stripes to free individual bodies from the substrate.
Claim 26
Independent Claim
142 words
A method of making on a supporting substrate plural, integrated, unitary read/write head/flexure/conductor structures, each for the reading and writing of information with respect to a relatively moving recoding medium, said method comprising preparing, on such a substrate, an etchable layer, forming on such layer, in plural stages, and by a deposition process, plural, side-by-side adjacent, elongate, dielectric flexure bodies, one set of sides in which rests on such layer, and whose respective widths are defined by etchable, wall-like stripes that extend between and separate adjacent bodies, creating within each such body, in plural stages interspersed with the forming stages, and also by a deposition process, magnetic read/write pole structure, and electrical coil and conductor means operatively associated with such pole structure, and following said preparing, forming and creating, etching such layer and such stripes to free individual bodies from the substrate.
Claim 27
Dependent Claim
20 words
The method of claim 20, wherein such layer and stripes are created through a process involving the deposition of copper.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-12-16 | 1995-06-17 | 1995-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-16 | 1999-06-17 | 1999-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-16 | 2003-06-17 | 2003-12-17 | $7700.00 | Window Closed / Lapsed |