Magnetic bubble recording element

Details Magnetic bubble recording element Magnetic bubble recording element

1991-07-10

1992-08-18

Popek, Joseph A.

Optics: measuring and testing

Blood analysis

365 27, G11C 1114, G11F 930

Patent

active

051405474

ABSTRACT:
A magnetic bubble recording element including a substrate having a transfer channel, a first magnetic layer for carrying a magnetic bubble and being formed on the substrate within and outside of the transfer channel with a surface of the first magnetic layer within the transfer channel being offset from at least a portion of a surface of the first magnetic layer outside of the transfer channel, and a second magnetic layer for applying a bias magnetic field to the first magnetic layer being formed on the first magnetic layer within and outside of the transfer channel. The magnetic bubble contained in the first magnetic layer being transferred along the transfer channel by an external magnetic field.

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patent: 3699547 (1972-10-01), Owens et al.
patent: 3714640 (1973-01-01), Bobeck
patent: 3901770 (1975-08-01), Littwin
patent: 3968481 (1976-07-01), Grundy et al.
patent: 4110838 (1978-08-01), Noe
patent: 4125876 (1978-11-01), Dimyan
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patent: 4369209 (1983-01-01), Iwashimizu et al.
patent: 4451500 (1984-05-01), Gerard et al.
patent: 4624858 (1986-11-01), Capra et al.
"Magnetic Ink Bubble Assess Technique", IBM Tech. Disc. Bul. vol. 18 No. 8, DeLuca et al., Jan. 1976, pp. 2673-2674.
"Temperature Stable Self-Biasing Bubbles In Double Layer Films", IEEE Trans. on Mag., Vol. Mag-11, No. 5, Uchishiba et al., Sep. 1975, pp. 1079-1081.
IBM Technical Disclosure Bulletin--vol. 18, No. 9 Feb. 1976 pp. 3082-3084 copy in 365.41.

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