Patent US5174012A successfully refreshed from Google Patents.
US5174012A
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US
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Method of making magnetic read/write head/flexure/conductor unit(s)
Assignee: Seagate Technology LLC
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Filing: 1991-12-12
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Granted: 1992-12-29
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Expires: 2011-12-12
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 constitutes are formed on an atom-by-atom basis utilizing one or more conventional material-deposition processes. The method of the invention is employable, as well, to create, for example, various read/write structural components or units which may be less than a fully integrated read/write head/flexure/conductor structure.
Inventors
- 👤 Harold J. Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:13
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/127; G11B5/31; G11B5/3103; G11B5/48; G11B5/4806; G11B5/484; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49021
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
117 words
A method of making on a supporting substrate a read/write structural unit for use in conjunction with 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 said etchable layer, with appropriate staging, and by a deposition process, a dielectric unit body having lateral dimensions defined by etchable wall-like stripes that extend on the layer along the sides of the body, with said stripes being etchable under the same circumstances that said etchable layer is etchable, and following said preparing and forming steps, etching said etchable layer and said stripes to free the body from the substrate.
Claim 2
Independent Claim
117 words
A method of making on a supporting substrate a read/write structural unit for use in conjunction with 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 said etchable layer, with appropriate staging, and by a deposition process, a dielectric unit body having lateral dimensions defined by etchable wall-like stripes that extend on the layer along the sides of the body, with said stripes being etchable under the same circumstances that said etchable layer is etchable, and following said preparing and forming steps, etching said etchable layer and said stripes to free the body from the substrate.
Claim 3
Dependent Claim
21 words
The method of claim 1, wherein said etchable layer and said stripes are created through steps involving the deposition of copper.
Claim 4
Independent Claim
18 words
The method of claims 1 or 2, wherein said dielectric unit body is formed of sputtered aluminum oxide.
Claim 5
Independent Claim
18 words
The method of claims 1 or 2, wherein said dielectric unit body is formed of sputtered silicon dioxide.
Claim 6
Independent Claim
130 words
A method of making on a supporting substrate plural, read/write structural units each for use in conjunction the reading and writing of information with respect to a relatively moving recording medium, said method comprising preparing, on a surface in said substrate, an etchable layer, forming on said etchable layer, with appropriate staging, and by a deposition process, plural, side-by-side-adjacent, dielectric unit bodies, one set of surfaces of which rest on said etchable layer, and whose respective lateral dimensions are defined by etchable, wall-like stripes that extend on the layer between, and separate, adjacent bodies, with said stripes being etchable under the same circumstances that said etchable layer is etchable, and following said preparing and forming steps, etching said etchable layer and said stripes to free individual bodies from the substrate.
Claim 7
Independent Claim
130 words
A method of making on a supporting substrate plural, read/write structural units each for use in conjunction the reading and writing of information with respect to a relatively moving recording medium, said method comprising preparing, on a surface in said substrate, an etchable layer, forming on said etchable layer, with appropriate staging, and by a deposition process, plural, side-by-side-adjacent, dielectric unit bodies, one set of surfaces of which rest on said etchable layer, and whose respective lateral dimensions are defined by etchable, wall-like stripes that extend on the layer between, and separate, adjacent bodies, with said stripes being etchable under the same circumstances that said etchable layer is etchable, and following said preparing and forming steps, etching said etchable layer and said stripes to free individual bodies from the substrate.
Claim 8
Dependent Claim
21 words
The method of claim 5, wherein said etchable layer and said stripes are created through steps involving the deposition of copper.
Claim 9
Independent Claim
18 words
The method of claims 5 or 6, wherein said dielectric unit bodies are formed of sputtered aluminum oxide.
Claim 10
Independent Claim
18 words
The method of claims 5 or 6, wherein said dielectric unit bodies are formed of sputtered silicon dioxide.
Claim 11
Independent Claim
84 words
A method of making on a supporting substrate a read/write structural unit for use in conjunction with the reading and writing of information with respect to a relatively moving recording medium, said method comprising preparing, on a surface in said substrate, an etchable layer, forming on said etchable layer, with appropriate staging, and by a deposition process, a dielectric unit body having the desired lateral dimensions, and following said preparing and forming steps, etching said etchable layer to free the body from the substrate.
Claim 12
Independent Claim
84 words
A method of making on a supporting substrate a read/write structural unit for use in conjunction with the reading and writing of information with respect to a relatively moving recording medium, said method comprising preparing, on a surface in said substrate, an etchable layer, forming on said etchable layer, with appropriate staging, and by a deposition process, a dielectric unit body having the desired lateral dimensions, and following said preparing and forming steps, etching said etchable layer to free the body from the substrate.
Claim 13
Dependent Claim
18 words
The method of claim 9, wherein said etchable layer is created through steps involving the deposition of copper.
Claim 14
Independent Claim
18 words
The method of claims 9 or 10, wherein said dielectric unit body is formed of sputtered aluminum oxide.
Claim 15
Independent Claim
18 words
The method of claims 9 or 10, wherein said dielectric unit body is formed of sputtered silicon dioxide.
Claim 16
Independent Claim
79 words
A method of making plural, read/write structural units each for use in conjunction with the reading and writing of information with respect to a relatively moving recording medium, said method comprising forming, with appropriate staging, and by a deposition process, plural, side-by-side-adjacent, dielectric unit bodies whose respective lateral dimensions are defined by etchable wall-like stripes that extend between and separate adjacent bodies, and following said forming step, etching said etchable stripes as a step toward freeing individual unit bodies.
Claim 17
Independent Claim
79 words
A method of making plural, read/write structural units each for use in conjunction with the reading and writing of information with respect to a relatively moving recording medium, said method comprising forming, with appropriate staging, and by a deposition process, plural, side-by-side-adjacent, dielectric unit bodies whose respective lateral dimensions are defined by etchable wall-like stripes that extend between and separate adjacent bodies, and following said forming step, etching said etchable stripes as a step toward freeing individual unit bodies.
Claim 18
Dependent Claim
18 words
The method of claim 13, wherein said etchable stripes are created through steps involving the deposition of copper.
Claim 19
Independent Claim
18 words
The method of claims 13 or 14, wherein said dielectric unit bodies are formed of sputtered aluminum oxide.
Claim 20
Independent Claim
18 words
The method of claims 13 or 14, wherein said dielectric unit bodies are formed of sputtered silicon dioxide.
Claim 21
Independent Claim
153 words
A method of making on a supporting, substantially planar substrate, a read/write structural unit adapted for integration with other components for use in conjunction with the reading and writing of information with respect to a relatively moving magnetic recording medium, said method comprising forming on a first planar surface in said substrate, by a deposition process, and with appropriate staging, a dielectric unit body, and during said forming, creating within said body, with staging related to that associated with said forming step, and also by a deposition process, magnetic yoke structure, and an electrical coil and conductor means operatively associated with said yoke structure, exposing a surface of said body and yoke structure in a newly formed second planar surface which is generally orthogonal to said first planar surface, and fabricating on said second planar surface, by a deposition process, a pole structure magnetically coupled to and operatively associated with said yoke structure.
Claim 22
Independent Claim
153 words
A method of making on a supporting, substantially planar substrate, a read/write structural unit adapted for integration with other components for use in conjunction with the reading and writing of information with respect to a relatively moving magnetic recording medium, said method comprising forming on a first planar surface in said substrate, by a deposition process, and with appropriate staging, a dielectric unit body, and during said forming, creating within said body, with staging related to that associated with said forming step, and also by a deposition process, magnetic yoke structure, and an electrical coil and conductor means operatively associated with said yoke structure, exposing a surface of said body and yoke structure in a newly formed second planar surface which is generally orthogonal to said first planar surface, and fabricating on said second planar surface, by a deposition process, a pole structure magnetically coupled to and operatively associated with said yoke structure.
Claim 23
Dependent Claim
16 words
The method of claim 17, wherein said dielectric unit body is formed of sputtered aluminum oxide.
Claim 24
Dependent Claim
16 words
The method of claim 17, wherein said dielectric unit body is formed of sputtered silicon dioxide.
References Cited (Backward Citations)
US5073242A
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1995-12-29 | 1996-06-29 | 1996-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-12-29 | 2000-06-29 | 2000-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-12-29 | 2004-06-29 | 2004-12-29 | $7700.00 | Window Closed / Lapsed |