Thermomagnetic recording head and mode of embodiment

Details Thermomagnetic recording head and mode of embodiment Thermomagnetic recording head and mode of embodiment

1988-10-11

1990-08-14

Stephan, Steven L.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Thermomagnetic recording or transducers

360114, 369117, G11B 502

Patent

active

049491989

ABSTRACT:
Thermomagnetic recording head for use in magnetic tape recording, comprising a layer of a ferromagnetic material set in the vicinity of a magnetic recording medium. A heating means is used to heat the layer of ferromagnetic material locally to a temperature that reaches the Curie point of the ferromagnetic material. Each heated zone is thus demagnetized and constitutes a recording gap for the recording medium.

REFERENCES:
patent: 3438010 (1969-04-01), Fuller
patent: 3651262 (1972-03-01), Korpel
patent: 3944992 (1976-03-01), Krumme et al.
patent: 3970803 (1976-07-01), Kinzie, Jr. et al.
patent: 4144548 (1979-03-01), Roes
patent: 4480258 (1984-10-01), Nishimura et al.
patent: 4520409 (1985-05-01), Kimoto et al.
patent: 4531137 (1985-07-01), Drews et al.
patent: 4586092 (1986-04-01), Martens et al.
patent: 4599658 (1986-07-01), Saitoh et al.
patent: 4610009 (1986-09-01), Connell
Patents Abstracts of Japan, vol. 3, No. 125 (E-145), Oct. 19, 1979, p. 94 E 145; & JP-A-54 103 009 (Ricoh K.K.) 14-08-1979.
Patents Abstracts of Japan, vol. 7, No. 26 (P-172) [1171], Feb. 2, 1983; & JP-A-57 179 907 (Canon K.K.) 05-11-1982.
IBM Technical Disclosure Bulletin, vol. 10, No. 4, Sep. 1967, pp. 420-421, New York, US; D. A. Thompson: "Beam-Operated Memory Element".
Patents Abstracts of Japan, vol. 4, No. 5 (E-165), Jan. 16, 1980, p. 98 E 165; & JP-A-54 146 620 (Matsushita Denki Sangyo K.K.) 16-11-1979.
Patents Abstracts of Japan, vol. 6, No. 156 (P-135) [1034], 17 aout 1982; & JP-A-57 74 814 (Suwa Seikosha K.K.) 11-05-1982.
Patents Abstracts of Japan, vol. 7, NO. 54 (P-180) [1199], Mar. 4, 1983; & JP-A-57 200 918 (Canon K.K.) 13-12-1982.
Patents Abstracts of Japan, vol. 7, No. 57 (P-181) [1202], Mar. 9, 1983; & JP-A-57 203 207 (Canon K.K.) 13-12-1982.
Patents Abstracts of Japan, vol. 9, No. 24 (P-331) [1747], Jan. 31, 1985; & JP-A 59 168 954 (Sanyo Denki K.K.) 22-09-1984.

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