Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1992-06-26
1994-04-05
Gluck, Richard E.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
G11B 560
Patent
active
053010779
ABSTRACT:
At the time of polishing an air bearing surface 12 the edge of the air bearing surface 12 is simultaneously beveled to form edge surfaces 14. The air bearing surface 12 is preferably constituted as a flat planar surface 121 having a tapered surface 122 continuous therewith at the air inflow end. In this case, defining the bevel width in regions IV located at the edge surfaces 14 at opposite sides in a direction perpendicular to the air inflow direction and extending in the vicinity of a ridge portion 131 between the central flat planar surface 121 and the tapered inflow end surface 122 and the bevel width in regions II located ahead of an interface 171 between the slider 1 and a thin-film transducer element 17 as I.sub.4 and I.sub.2 respectively, the bevel width of an air inflow end edge surface 14 (region V) continuous with the tapered inflow end surface 122 as I.sub.5 and the bevel width of opposite side edge surfaces 14 (region III) continuous with the central flat planar surface 121 as I.sub.3, (I.sub.4 -I.sub.5)/I.sub.5 is restricted to not more than 0.4, (I.sub.3 -I.sub.2)/I.sub.3 is restricted to not more than 0.2, the bevel width of all edge surfaces 14 is restricted to 4-20 .mu.m, or the bevel width range R thereof is restricted to not more than 5 .mu.m. By in this way restricting the bevel width of the edge surfaces 14 over the entire perimeter of the air bearing surface 12 so as to be highly uniform, there are realized marked improvements in flying stability, particularly a reduction in the variation in roll angle in the flying attitude.
REFERENCES:
patent: 4797765 (1989-06-01), Ezaki et al.
patent: 4821131 (1989-04-01), Gotoh
patent: 4998174 (1991-03-01), Wada
patent: 5001583 (1991-03-01), Matsuzaki
patent: 5006946 (1991-04-01), Matsuzaki
patent: 5068759 (1991-11-01), Matsuzaki
patent: 5097369 (1992-03-01), Matsuzaki
patent: 5124864 (1992-06-01), Matsuzaki
patent: 5126903 (1992-06-01), Matsuzaki
patent: 5134531 (1992-07-01), Matsuzaki et al.
Kamimura Takamitsu
Kobayashi Kanji
Yamaguchi Masao
Gluck Richard E.
TDK Corporation
LandOfFree
Thin film magnetic head does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Thin film magnetic head, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thin film magnetic head will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-516500