Optical magnetic recording device

Details Optical magnetic recording device Optical magnetic recording device

1982-03-19

1985-06-25

Faber, Alan

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369 13, 369112, 346 76L, 360 59, G11B 712, G11B 1114

Patent

active

045258287

ABSTRACT:
An optical recording device for forming recording tracks of an indented pattern on a magnetic recording tape comprises a rotary drum which has at least two windows, the magnetic recording tape being driven obliquely on the windows along an outer surface of the drum, and an optical system, disposed inside the rotary drum, for converting a modulated laser beam incident on the optical system into two slit beams, major axes of sections of which form a predetermined angle and for emitting the slit beams on the magnetic recording tape through the windows, whereby the recording tracks of the indented pattern in correspondence with the signal are formed obliquely on the magnetic recording tape with respect to a longitudinal direction of the magnetic recording tape by the slit beams so as to form different azimuths between adjacent recording tracks.

REFERENCES:
patent: 2923781 (1960-02-01), Gordon
patent: 3314074 (1967-04-01), Becker
patent: 3588218 (1971-06-01), Hunt et al.
patent: 3668671 (1972-06-01), Everett
patent: 3688025 (1972-08-01), Whittemore, Jr.
patent: 3821787 (1974-06-01), Kihan
patent: 3823276 (1974-07-01), Maslowski et al.
patent: 3969765 (1976-07-01), Roos
patent: 4212037 (1980-07-01), Lemelson
IBM Technical Disclosure Bulletin, vol. 15, No. 6, Nov. 1972, pp. 1790-1791, New York, USA.

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