Method for making a twin head for electronic still camera and a

Details Method for making a twin head for electronic still camera and a Method for making a twin head for electronic still camera and a

1987-08-24

1988-09-13

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

29414, 360125, G11B 542

Patent

active

047698993

ABSTRACT:
A twin head for use in an electronic still camera includes a shield plate, first and second head chips bonded on opposite sides of the shield plate, and first and second reinforcing core members further bonded on first and second head chips, respectively. Each of the first and second head chip members has an elongated face that faces a recording medium and a magnetic gap defined at an intermediate portion of the elongated face. The length Wh of the elongated face is between 0.3 millimeter and 1 millimeter. Each of the first and second reinforcing core members has a coil wound thereon. The first and second head chip members, the shield plate, and the first and second reinforcing core members are bonded together such that the elongated faces of the first and second head chip members are in flush with each other and that the magnetic gaps of the first and second head chip members are aligned to each other.

REFERENCES:
patent: 2236257 (1941-03-01), Borchers
patent: 4475137 (1984-10-01), Yasuda et al.

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