Dynamic magnetic information storage or retrieval – Record copying – Contact transfer
Patent
1991-10-23
1993-09-21
Young, W. R.
Dynamic magnetic information storage or retrieval
Record copying
Contact transfer
360 32, 360 331, G11B 586
Patent
active
052473970
ABSTRACT:
A magnetic recording transfer method for use with the combination of a mother magnetic recording medium and a copy magnetic recording medium of a metal-deposited thin film type each. The two media are overlaid so that the column inclination of one medium will be opposite in direction to that of the other medium. This method comprises the step of externally applying a biased magnetic field to the combination of the media in such a manner that magnetized recordings on the mother medium will be transferred to the copy medium. The easy axis of the mother medium is positioned at an angle of 20.degree..+-.15.degree. with respect to the in-plane direction of the medium. The biased magnetic field is applied to the mother medium at an angle of 110.degree..+-.15.degree. with respect to the in-plane direction of the medium. This makes it possible to enhance the efficiency in transferring magnetic recording of the mother medium, especially the recordings of short wave lengths, and to minimize demagnetization of the mother medium. Furthermore, the ratio of the coercive force H.sub.CM of the mother medium to the coercive force H.sub.CC of the copy medium (H.sub. CM /H.sub.CC) is set to at most 1.5. This improves the magnetic recording transfer output of the copy medium and boosts the efficiency in the magnetic transfer of short wave magnetic recordings.
REFERENCES:
patent: 4363038 (1982-12-01), Fayling
patent: 4698700 (1987-10-01), Shirai
Patent Abstracts of Japan, vol. 6, No. 241, p. 158, Nov. 30, 1982 & JP57-138061.
Arisaka Yuichi
Chiba Kazunobu
Kobayashi Toshiharu
Sato Ken'ichi
Yamada Yukari
Sony Corporation
Young W. R.
LandOfFree
Method for magnetically recording digital video signals with spe 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 for magnetically recording digital video signals with spe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for magnetically recording digital video signals with spe will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1054568