Electric heating – Metal heating – By arc
Patent
1988-03-07
1989-02-14
Hecker, Stuart N.
Electric heating
Metal heating
By arc
360110, 360126, 360125, 29603, 20419234, B23K 900, G11B 5127, G11B 5147, H01F 706
Patent
active
048048160
ABSTRACT:
A method of making a thin-film magnetic head having a multi-turn structure includes forming a lower magnetic layer on a substrate, and successively forming a first insulating layer and a first conductive layer over the lower magnetic layer. Then, a first coil patterned mask is formed on the first conductive layer, and an ion beam is applied onto a structure formed by the foregoing steps. The ion beam simultaneously etches the first insulating layer and first conductive layer so that a first coil patterned double-layer is formed. Then, a second insulating layer is formed followed by an upper magnetic layer, over the first coil patterned double-layer. Thus, a magnetic gap is formed between the lower and upper magnetic layers defined by the thickness of the second insulating layer.
REFERENCES:
patent: 4281357 (1981-07-01), Lee
patent: 4489357 (1984-12-01), Van Doijen et al.
IEEE Trans. on Magnetics, vol. Mag-15, No. 3, May 1979, pp. 1060-1064, "Narrow Track Mag. Head Fab. by Ion-Etching Method" by Nakanishi et al.
IEEE Trans. on Magnetics, vol. Mag-15, No. 6, Nov. 1979, pp. 1616-1618, "Fabrication of 8 Turn Multi-Track Thin Films Heads" by Hanazono et al.
IEEE Trans. Magnetics, vol. Mag. 15, No. 6, Nov. 1979, pp. 1637-1639, "Mag. Head Fab. by Improved Ion Etching Method" by Toshima et al.
IEEE Trans. on Magnetics, vol. Mag.-15, No. 6, Nov. 1979, pp. 1648-1650, "Toward a Single-Mask Processing of Ion-Implanted Bubble Devices" by Ahn et al.
IEEE Transactions on Magnetics, vol. Mag. 16, No. 5, Sep. 1980, pp. 785-787, "Floating Thin Film Head Fabrication by Ion Etching Method" by Nakanishi et al.
National Technical Report vol. 26, No. 6, Dec. 1980, pp. 949-956, "Thin Film Magnetic Heads for Digital Audio Tape Recorder" by Nomura et al.
Ferguson Jr. Gerald J.
Garcia Alfonso
Hecker Stuart N.
Kabushiki Kaisha Kenwood
LandOfFree
Method of making a thin-film magnetic head having a multi-layere does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of making a thin-film magnetic head having a multi-layere, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of making a thin-film magnetic head having a multi-layere will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1367088