Patent EP0430407A2 successfully refreshed from Google Patents.
EP0430407A2
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Integrated magnetic read/write head/flexure/conductor structure
Assignee: Censtor Corp
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Filing: 1990-09-28
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Granted: —
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Expires: 2010-09-28
Abstract
Abstract A 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 conventional material-deposition processes.
Inventors
- 👤 Harold J. Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 16:25
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; Y10T29/49032; Y10T29/49036; Y10T29/49041; Y10T29/49043; Y10T29/4906; Y10T29/49064
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
55 words
An integrated, unitary read/write head/flexure/conductor structure for the reading and writing of information with respect to a relatively moving medium, such as a disk or drum, said structure comprising an elongate dielectric flexure body, and embedded within said body, magnetic read/write pole structure, and electrical coil and conductor means operatively associated with said pole structure.
Claim 2
Dependent Claim
40 words
The read/write structure of claim 1 which employs a probe type main pole in conjunction with an auxiliary or flux return pole for recording on two-layer media whose easy axis of magnetization is normal to the plane of the media.
Claim 3
Dependent Claim
36 words
The read/write structure of claim 1 which is characterized by a gapped two-pole or "ring" type configuration as utilized conventionally for recording on media whose easy axis of magnetization is in the plane of the media.
Claim 4
Dependent Claim
28 words
The read/write structure of claim 1, wherein said flexure body, pole structure and coil and conductor means are formed by a deposition process, e.g., sputtering and photolithographic patterning.
Claim 5
Dependent Claim
19 words
The read/write structure of claims 1, 2, 3 or 4, wherein said flexure body is formed of aluminum oxide.
Claim 6
Dependent Claim
52 words
The read/write structure of claims 1, 2, 3 or 4 which has 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 7
Dependent Claim
49 words
The read/write structure of claim 5 which has 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 8
Dependent Claim
57 words
An integrated, unitary read/write head/flexure/conductor structure for the reading and writing of information in sliding contact with a relatively moving recording medium, such as a disk or drum, said structure comprising an elongate dielectric flexure body, and embedded within said body, magnetic read/write pole structure, and electrical coil and conductor means operatively associated with said pole structure.
Claim 9
Dependent Claim
15 words
The read/write structure of claim 8 which is constructed for use with rigid recording media.
Claim 10
Dependent Claim
30 words
The read/write structure of claims 8 or 9, wherein said flexure body, pole structure and coil and conductor means are formed by a deposition process, e.g., sputtering and photolithographic patterning.
Claim 11
Dependent Claim
17 words
The read/write structure of claims 8 or 9, wherein said flexure body is formed of aluminum oxide.
Claim 12
Dependent Claim
15 words
The read/write structure of claim 10, wherein said flexure body is formed of aluminum oxide.
Claim 13
Dependent Claim
51 words
The read/write structure of claims 8 or 9 which has 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 14
Dependent Claim
25 words
The read/write structure of claims 8 or 9 which is designed to operate with an applied load in the range of about 5-to about 50-milligrams.
Claim 15
Dependent Claim
49 words
The read/write structure of claim 10 which has 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 16
Dependent Claim
49 words
The read/write structure of claim 11 which has 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 17
Dependent Claim
49 words
The read/write structure of claim 12 which has 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 18
Dependent Claim
69 words
An integrated, unitary read/write head/flexure/conductor structure for the reading and writing of information with respect to a relatively moving medium, such as a disk or drum, said structure comprising plural elongate dielectric flexure bodies independently flexible relative to one another and joined to a common support base, and embedded within each said body, magnetic read/write pole structure, and electrical coil and conductor means operatively associated with said pole structure.
Claim 19
Dependent Claim
45 words
The read/write structure of claim 18, wherein each pole structure takes the form of a probe-type main pole in conjunction with an auxiliary or flux return pole for recording on two-layer media whose easy axis of magnetization is normal to the plane of the media.
Claim 20
Dependent Claim
36 words
The read/write structure of claim 18 which is characterized by a gapped two-pole or "ring" type configuration as utilized conventionally for recording on media whose easy axis of magnetization is in the plane of the media.
Claim 21
Dependent Claim
28 words
The read/write structure of claim 18, wherein each flexure body, pole structure and coil and conductor means are formed by a deposition process, e.g., sputtering and photolithographic patterning.
Claim 22
Dependent Claim
20 words
The read/write structure of claims 18, 19, 20 or 21 wherein the flexure body material is formed of aluminum oxide.
Claim 23
Dependent Claim
21 words
The read/write structure of claims 18, 19, 20 or 21 which is designed for sliding contact use with such a medium.
Claim 24
Independent Claim
73 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, such as a disk or drum, said method comprising forming, by a deposition process, an elongate dielectric flexure body, and during said forming creating within such body, also by a deposition process, magnetic read/write pole structure, and electrical coil and conductor means operatively associated with such pole structure.
Claim 25
Dependent Claim
15 words
The method of claim 24, wherein said flexure body is formed of sputtered aluminum oxide.
Claim 26
Independent Claim
55 words
The method of claims 24 or 25 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 27
Independent Claim
25 words
The method of claims 24 or 25 which results in a final unit wherein the read/write pole structure takes the form of a probe-type structure.
Claim 28
Independent Claim
25 words
The method of claims 24 or 25 which results in a final unit wherein the read/write pole structure takes the form of a ring-type structure.
References Cited (Backward Citations)
No citation records indexed.
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