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1. (WO2001039181) METHOD OF MANUFACTURING MAGNETIC HEAD, AND MAGNETIC RECORDING AND REPRODUCING APPARATUS
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2001/039181 International Application No.: PCT/JP2000/008225
Publication Date: 31.05.2001 International Filing Date: 22.11.2000
Chapter 2 Demand Filed: 23.03.2001
IPC:
G11B 5/133 (2006.01) ,G11B 5/187 (2006.01) ,G11B 5/53 (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
127
Structure or manufacture of heads, e.g. inductive
133
with cores composed of particles, e.g. with dust cores, with ferrite cores
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
187
Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to, the recording medium; Pole pieces; Gap features
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
52
with simultaneous movement of head and record carrier, e.g. rotation of head
53
Disposition or mounting of heads on rotating support
Applicants: OGASAWARA, Shinya[JP/JP]; JP (UsOnly)
FUJIKI, Mitsuhisa[JP/JP]; JP (UsOnly)
YAMABAYASHI, Satoshi[JP/JP]; JP (UsOnly)
OKANA, Tetsuya[JP/JP]; JP (UsOnly)
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.[JP/JP]; 1006-banchi, Oaza-Kadoma Kadoma-shi, Osaka 571-8501, JP (AllExceptUS)
Inventors: OGASAWARA, Shinya; JP
FUJIKI, Mitsuhisa; JP
YAMABAYASHI, Satoshi; JP
OKANA, Tetsuya; JP
Agent: IKEUCHI, Hiroyuki ; Suite 401 Umeda Plaza Building 3-25, Nishitenma 4-chome Kita-ku, Osaka-shi Osaka 530-0047, JP
Priority Data:
11/33229124.11.1999JP
Title (EN) METHOD OF MANUFACTURING MAGNETIC HEAD, AND MAGNETIC RECORDING AND REPRODUCING APPARATUS
(FR) PROCEDE DE FABRICATION D'UNE TETE MAGNETIQUE ET APPAREIL DE REPRODUCTION ET D'ENREGISTREMENT MAGNETIQUE
Abstract:
(EN) A magnetic head is manufactured by grinding a head chip (2) with a gap depth (GD1) to remove its margin (6) until the gap depth becomes a final gap depth (GD2). The gap depth (GD1) is 25 microns or thinner. The method increases yield and productivity in manufacture of a high-performance magnetic head with a decreased gap depth (GD2), which satisfies the standards of both the gap depth (GD2) and the distance between the head gap and the outermost point of the chip front.
(FR) L'invention concerne une tête magnétique fabriquée par meulage d'une puce de tête (2) présentant une profondeur d'entrefer (GD1) de façon à en réduire la marge (6) jusqu'à ce que la profondeur d'entrefer atteigne une profondeur d'entrefer finale (GD2). La profondeur d'entrefer (GD1) est inférieure ou égale à 25 microns. Ce procédé permet d'augmenter le rendement et la productivité dans la fabrication d'une tête magnétique haute performance avec une profondeur d'entrefer réduite (GD2), ce qui satisfait aux normes de profondeur d'entrefer (GD2) et de distance entre l'entrefer et le point le plus à l'extérieur de l'avant de la puce.
front page image
Designated States: CN, JP, KR, US
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)