To provide a magnetic sheet for RF-ID which is formed as a compact and light-weighted structure and is superior in reliability at low cost, a magnetic sheet that uses the same, an antenna that uses the same, and to provide a magnetic sheet manufacturing method.
The magnetic sheet comprises a sheet-like magnetic member 2 and a protective layer provided on the surface of the magnetic member 2. The protective layer contains resins as main components, and the resin contacted to the magnetic member 2 has a lower viscosity than the resin exposed to outside. This suppresses the production of magnetic powder, if an external stress or shock is exerted on the magnetic sheet, and reduces the damage of the protective layer surface, such as crack, break, chip.
NAKAMURA KOICHI
ONAKA YOSHIO
FUKUSHIMA FUMIO
Hiroki Naito
Daisuke Nagano
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