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1. US5956215 - High density thin film coupled element read head with support element to prevent damage to magnetoresistive element

Office
United States of America
Application Number 08909533
Application Date 12.08.1997
Publication Number 5956215
Publication Date 21.09.1999
Grant Number 5956215
Grant Date 21.09.1999
Publication Kind A
IPC
G11B 5/39
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
127Structure or manufacture of heads, e.g. inductive
33Structure or manufacture of flux-sensitive heads
39using magneto-resistive devices
G11B 5/187
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
127Structure or manufacture of heads, e.g. inductive
187Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to, the recording medium; Pole pieces; Gap features
G11B 5/235
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
127Structure or manufacture of heads, e.g. inductive
187Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to, the recording medium; Pole pieces; Gap features
23Gap features
235Selection of material for gap filler
G11B 5/31
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
127Structure or manufacture of heads, e.g. inductive
31using thin film
G11B 5/40
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
40Protective measures on heads, e.g. against excessive temperature
CPC
G11B 5/3951
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
127Structure or manufacture of heads, e.g. inductive
33Structure or manufacture of flux-sensitive heads, ; i.e. for reproduction only; Combination of such heads with means for recording or erasing only
39using magneto-resistive devices ; or effects
3903using magnetic thin film layers or their effects, the films being part of integrated structures
3906Details related to the use of magnetic thin film layers or to their effects
3945Heads comprising more than one sensitive element
3948the sensitive elements being active read-out elements
3951the active elements being arranged on several parallel planes
G11B 5/1871
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
127Structure or manufacture of heads, e.g. inductive
187Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
1871Shaping or contouring of the transducing or guiding surface
G11B 5/235
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
127Structure or manufacture of heads, e.g. inductive
187Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
23Gap features
235Selection of material for gap filler
G11B 5/3106
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
127Structure or manufacture of heads, e.g. inductive
31using thin films
3103Structure or manufacture of integrated heads or heads mechanically assembled and electrically connected to a support or housing
3106where the integrated or assembled structure comprises means for conditioning against physical detrimental influence, e.g. wear, contamination
G11B 5/3903
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
127Structure or manufacture of heads, e.g. inductive
33Structure or manufacture of flux-sensitive heads, ; i.e. for reproduction only; Combination of such heads with means for recording or erasing only
39using magneto-resistive devices ; or effects
3903using magnetic thin film layers or their effects, the films being part of integrated structures
G11B 5/40
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
40Protective measures on heads, e.g. against excessive temperature
Applicants Storage Technology Corporation
Inventors Schmalhorst Joseph M.
Torline Joseph E.
Cates James C.
Agents Brooks & Kushman P.C.
Title
(EN) High density thin film coupled element read head with support element to prevent damage to magnetoresistive element
Abstract
(EN)

A reproducing element for use in a high density coupled element read head, and a method for manufacturing such an element are provided. The reproducing element includes an insulative layer and a magnetoresistive element in contact with the insulative layer. The reproducing element also includes a support element in contact with the magnetoresistive layer, the support element having a hardness sufficient to substantially prevent damage to the magnetoresistive element during mechanical processing and during movement of a tape across a surface of the magnetoresistive element. The method includes depositing an insulative layer on a substrate, and depositing a magnetoresistive material on the insulative layer, the magnetoresistive material forming a read element. The method also includes depositing a material on the read element, the material forming a support element and having a hardness sufficient to substantially prevent damage to the read element during mechanical processing or during movement of a tape across a surface of the read element.


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