Sheet coil

Details Sheet coil Sheet coil

1985-06-17

1987-11-24

Kozma, Thomas J.

Inductor devices

Coil or coil turn supports or spacers

Printed circuit-type coil

29602R, 1566591, 336223, 336232, 430314, H01F 500, H01F 2728

Patent

active

047092211

ABSTRACT:
A sheet coil in the form of a conductor on an insulating substrate has a mending metal portion at a side portion forming the conductor gap so as to narrow the gap width. The sheet coil can be produced by forming a coil pattern on a base material made up of an insulating substrate and a metal layer laminated thereon by using a photosensitive material. The portion of the metal layer not covered with the photosensitive material is removed by etching, and, while the photosensitive material remains, a metal plating treatment is carried out so as to narrow the etched width of the metal layer.

REFERENCES:
patent: 4081823 (1978-03-01), Cook, Jr.
patent: 4340833 (1982-07-01), Sudo et al.
patent: 4470872 (1984-09-01), Sudo et al.
patent: 4483749 (1984-11-01), Shimamura

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