DocumentCode
973318
Title
Ultra-high density recording with new heads and tapes
Author
Lemke, J.U.
Author_Institution
Spin Physics, Inc., San Diego, CA
Volume
15
Issue
6
fYear
1979
fDate
11/1/1979 12:00:00 AM
Firstpage
1561
Lastpage
1563
Abstract
The joint optimization of head and tape parameters as a sub-system has permitted improved recording density to 4700 bits/mm (120,000 bits/in.) both with and without bias. Overwrite without bias exceeds 30 dB at that density, 1F/2F or 2F/1F and data rates of 1.8 M bits/sec at 38.1 cm/sec (15 ips) and 30 dB SNR were obtained. The optimum head/tape combination proved to be a 0.25μm (10μ") record head and a new 800 oersted unoriented tape which supports both horizontal and vertical magnetization.
Keywords
Magnetic tape recording; Filters; Fourier transforms; Magnetic heads; Magnetic separation; Magnetization; Phase distortion; Physics; Presses; Surface waves;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/TMAG.1979.1060467
Filename
1060467
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