G - Physics – 11 – B
Patent
G - Physics
11
B
352/29.01, 352/3
G11B 13/04 (2006.01) G06K 7/01 (2006.01) G06K 7/08 (2006.01) G06K 7/10 (2006.01) G07D 7/04 (2006.01) G07D 7/12 (2006.01)
Patent
CA 1306055
ABSTRACT OF THE DISCLOSURE A magnetooptic composite head comprising a magnetic sensor including a magnetic core means and adapted to detect a magnetic pattern recorded on a record medium; an optical sensor including a nonmagnetic light transmitting member located along a distal gap of the magnetic sensor and an optical fiber bundle having one end connected to the light transmitting member, and adapted to detect an optical pattern recorded on the record medium; and a holder containing the magnetic and optical sensors in the internal space thereof, the holder having two opposite side walls extending at right angles to the distal gap of the magnetic core means and one end face from which the distal gap projects outward. The magnetic core means of the head includes a wide portion, situated close to the distal gap and projecting outward from the one end face of the holder, and a narrow portion surrounded by the holder so as to be located inside the one end face, the wide portion being at least wider the distance between the opposite side walls. If a plurality of such magnetooptic composite heads are arranged side by side to form a multihead, the respective distal gaps of the adjacent core means can be arranged intimately in contact with one another without being hindered by the holders of the heads. Thus, the medium identifying accuracy of the head is improved.
559519
Chiba Kazuo
Kobayashi Takao
Migita Jituo
Mochizuki Hajime
Ohishi Yoshiaki
Smart & Biggar
The Furukawa Electric Co. Ltd.
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