Method for making perpendicular magnetic recording head...

Details Method for making perpendicular magnetic recording head... Method for making perpendicular magnetic recording head...

2005-01-04

2005-01-04

Tugbang, A. Dexter (Department: 3729)

Metal working

Method of mechanical manufacture

Electrical device making

C029S603070, C029S603110, C029S603130, C029S603150, C360S121000, C360S123090, C360S125330, C427S127000, C427S128000, C451S005000, C451S041000

Reexamination Certificate

active

06836957

ABSTRACT:
A perpendicular magnetic recording head includes a main magnetic pole layer having an inverted trapezoidal cross-section at the face opposing a recording medium. The main magnetic pole layer is formed by plating in a groove which is formed in a resist layer. The width of the resist layer in the track width direction gradually increases from the bottom to the top of the resist layer. This tapered groove is formed by annealing a nontapered groove or controlling the patterning precision of the resist layer. The inverted trapezoidal main magnetic pole layer prevents side fringing when the perpendicular magnetic recording head has a skew angle.

REFERENCES:
patent: 4546398 (1985-10-01), Toda et al.
patent: 4636897 (1987-01-01), Nakamura et al.
patent: 4855854 (1989-08-01), Wada et al.
patent: 4873599 (1989-10-01), Sueoka
patent: 6063512 (2000-05-01), Osaka et al.
patent: 01037703 (1989-02-01), None
patent: 8-106613 (1996-04-01), None
patent: 10-112008 (1998-04-01), None
patent: 10-320720 (1998-12-01), None
patent: 2000-48318 (2000-02-01), None
“Interaction between head and recording medium in perpendicular recording”; Hokkyo, J.; Saito, I.; Satake, S.; Magnetics, IEEE Transactions on , vol.: 16 , Issue: 5 , Sep 1980; pp. 887-889.*
“Dynamics of perpendicular recording heads”; Litvinov, D.; Chomko, R.; Wolfson, J.; Svedberg, E.; Bain, J.; Bain, J.; White, R.; Chantre R.; Khizroev, S.; Magnetics, IEEE Transactions on, vol.: 37 , Issue: 4 , Jul. 2001; pp. 1376-1378.*
Japanese Office action dated Aug. 6, 2004 for Japanese Patent Application No. 394737.

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