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1. EP1002313 - HIGH DENSITY THIN FILM COUPLED ELEMENT READ HEAD AND METHOD FOR MANUFACTURING SAME

Office
European Patent Office
Application Number 98939879
Application Date 06.08.1998
Publication Number 1002313
Publication Date 24.05.2000
Publication Kind A1
IPC
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 5/39
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 5/40
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 5/1871
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 5/3951
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 5/40
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 CORP
Inventors SCHMALHORST JOSEPH M
TORLINE JOSEPH E
CATES JAMS C
Designated States
Priority Data 08909533 12.08.1997 US
9816326 06.08.1998 US
Title
(DE) HOCHDICHTELESEKOPF MIT VERKOPPELTEM DÜNNFILM UND HERSTELLUNGSVERFAHREN
(EN) HIGH DENSITY THIN FILM COUPLED ELEMENT READ HEAD AND METHOD FOR MANUFACTURING SAME
(FR) TETE DE LECTURE HAUTE DENSITE A ELEMENT COUPLE A FILM MINCE ET PROCEDE DE FABRICATION CORRESPONDANT
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 (14) and a magnetoresistive layer (16) in contact with the insulative layer (14). The reproducing element also includes a support layer (24) in contact with the magnetoresistive layer (16), the support layer (24) having a hardness sufficient to substantially prevent damage to the magnetoresistive layer (16) during mechanical processing and during movement of a tape across a surface of the reproducing element.
(FR) Cette invention se rapporte à un élément de lecture destiné à une tête de lecture haute densité à élément couplé, ainsi qu'à un procédé de fabrication d'un tel élément de lecture. Ce dernier comporte une couche isolante (14) et une couche magnéto-résistante (16) en contact avec ladite couche isolante (14), ainsi qu'une couche support (24) en contact avec ladite couche magnéto-résistante (16). Ladite couche support (24) possède une dureté suffisante pour empêcher sensiblement tout dégât à la couche magnéto-résistante (16) au cours du processus mécanique et au cours du déplacement de la bande sur une surface de l'élément de lecture.
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