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1. (WO1998053446) DATA TRANSDUCER AND METHOD FOR WRITING DATA UTILIZING THE BOTTOM POLE AS THE TRAILING EDGE OF A THIN-FILM MAGNETIC TAPE WRITE HEAD
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1998/053446 International Application No.: PCT/US1998/010031
Publication Date: 26.11.1998 International Filing Date: 15.05.1998
Chapter 2 Demand Filed: 18.12.1998
IPC:
G11B 5/00 (2006.01) ,G11B 5/09 (2006.01) ,G11B 5/31 (2006.01) ,G11B 5/48 (2006.01)
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5
Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5
Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
02
Recording, reproducing or erasing methods; Read, write or erase circuits therefor
09
Digital recording
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5
Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
127
Structure or manufacture of heads, e.g. inductive
31
using thin film
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5
Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
48
Disposition or mounting of heads relative to record carriers
Applicants:
QUANTUM CORPORATION [US/US]; 500 McCarthy Boulevard Milpitas, CA 95035, US
Inventors:
NEUMANN, Lawrence, G.; US
Agent:
BURTON, Carol, W. ; Holland & Hart L.L.P. Suite 3200 555 17th Street P.O. Box 8749 Denver, CO 80201-8749, US
Priority Data:
08/861,07621.05.1997US
Title (EN) DATA TRANSDUCER AND METHOD FOR WRITING DATA UTILIZING THE BOTTOM POLE AS THE TRAILING EDGE OF A THIN-FILM MAGNETIC TAPE WRITE HEAD
(FR) TRANSDUCTEUR DE DONNEES ET PROCEDE D'ECRITURE DE DONNEES UTILISANT LE POLE INFERIEUR EN TANT QUE FLANC ARRIERE D'UNE TETE A FILM MINCE D'ECRITURE SUR BANDE MAGNETIQUE
Abstract:
(EN) A data transducer, process for fabricating the same and methods for writing data to a magnetic storage media, such as magnetic tape (64), utilizing the lower pole (52) as the trailing edge of a write head (50). The lower pole (52) may be formed of sputtered FeN or FeN-based alloys since it can be formed on the planar substrate instead of overlying the write coil (56) and its associated layers. The lower pole (52) can be processed by wet-etching techniques because its width and edge contours are not critical dimensions which determine recording characteristics. Utilizing the wider and more planar lower pole (52) as the write head trailing edge results in a straighter magnetic transition on the media without the curved edges associated with the fringe fields at the edges of the narrower top pole (62).
(FR) L'invention concerne un transducteur de données, son procédé de fabrication, et un procédé d'écriture de données sur un support magnétique, par exemple une bande magnétique (64), ce procédé utilisant le pole inférieur (52) en tant que flanc arrière d'une tête d'écriture. Ce pole inférieur (52) peut être composé de FeN pulvérisé ou d'alliages pulvérisés à base de FeN, étant donné que ce pole peut être formé sur un substrat sensiblement plat, au lieu de chevaucher la bobine d'écriture (56) et ses couches d'isolement. Le pole inférieur (52) peut en outre être traité par des techniques de gravure humide, sa largeur et ses contours ne possédant pas des dimensions critiques qui influent sur ses caractéristiques d'enregistrement. En utilisant un pole inférieur (52) relativement plus large et plus plat en tant que flanc arrière de la tête d'écriture, on obtient une transition magnétique plus linéaire sur le support, sans bords arrondis liés aux champs de dispersion normalement situés sur le pole supérieur (62), plus étroit que ledit pole inférieur.
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Designated States: JP, KR, SG
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0983589JP2001526820