Hub for tape cassette
AssigneeTDK Corporation
InventorsTakateru Satoh, Haruo Shiba, Masaru Ikebe, Hiroki Suzuki, Yukio Miyazaki
Life of this patent
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Abstract
A for winding a tape thereabout for a tape cassette about which a tape can be wound. The hub has a hub body and a tape clamp that fits in a recess defined by the periphery of the hub body. The hub body has a coefficient of linear expansion below 6 .times.10.sup.-5 cm/cm .degree.C. at -10.degree. to +90.degree. C. The periphery of the hub body can be plated with a metal film.
Claims6
A hub for winding a tape thereabout for a tape cassette, the hub consisting of a hub body and a tape clamp, the hub body having a periphery defining a recess therein, the tape clamp being fit in the recess of the periphery of the hub body, characterized in that the hub body and the tape clamp have a coefficient of linear expansion below 6.times.10.sup.-5 cm/cm .degree.C. at temperatures of minus 10.degree.-90.degree. C., wherein the material of the hub body and the tape clamp is an aromatic polyester containing an inorganic filler, the inorganic filler being present in an amount effective to achieve the coefficient of linear expansion below 6.times.10.sup.-5 cm/cm .degree.C. at temperatures of minus 10.degree.-90.degree. C.
A hub for a tape cassette consisting of a molded hub body and a tape clamp, the hub body having a periphery that defines a recess, the tape clamp being fit in the recess of the periphery of the hub body, characterized in that a plastic material of at least said hub body is at least one or aromatic polyester, aromatic polyester polyacetal, ABS-polystyrene copolymer and polycarbonate, the plastic material contains an inorganic filler, and a plated metal film is on the surface of the periphery, wherein the inorganic filler is selected, and is present in an amount effective, to achieve a coefficient of linear expansion below 6.times.10.sup.-5 cm/cm .degree.C. at temperatures of minus 10.degree.-90.degree. C.
A hub for a tape cassette consisting of a molded hub body and a tape clamp, the hub body having a periphery that defines a recess, the tape clamp being fit in the recess of the periphery of the hub body, characterized in that a plastic material of at least said hub body is at least one of aromatic polyester, aromatic polyester polyacetal, ABS-polystyrene copolymer, and polycarbonate, the plastic material contains an inorganic filler, and a plated metal film is on the surface of the periphery, wherein the material of the plated metal film is selected from a group consist of nickel, chrome and aluminum and wherein the inorganic filler is selected, and is present in an amount effective, to achieve a coefficient of linear expansion below 6.times.10.sup.-5 cm/cm .degree.C. at temperatures of minus 10.degree.-90.degree. C.
Dependencies are inferred from the claim text.