Coated magnetic tape cassette spring

Details Coated magnetic tape cassette spring Coated magnetic tape cassette spring

G - Physics

11

B

G11B 23/027 (2006.01) C23C 30/00 (2006.01) G11B 23/087 (2006.01)

Patent

CA 2155703

A magnetic tape cassette reel spring of ferromagnetic material such as mild steel with yield strength slightly greater than 100,000 psi coated with a impervious layer. Alloy steel and AISI constructional steels are also suitable. The coating inhibits contamination of the magnetic tape and may include nickel plate, zinc plate, lacquer, paint, varnish and polymer coatings. A method includes coating a steel sheet, slitting the sheet and stamping the spring configuration from the slit strips of the sheet.

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