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Magnetic recording medium having a dimensional variation

專(zhuān)利號(hào)
US10867630B2
公開(kāi)日期
2020-12-15
申請(qǐng)人
Sony Corporation（JP Tokyo）
發(fā)明人
Noboru Sekiguchi; Minoru Yamaga
IPC分類(lèi)
G11B5/62; G11B5/733; G11B5/706; C23C14/00; G11B5/735
技術(shù)領(lǐng)域
recording,magnetic,layer,medium,in,σmd,δw,nm,or,average
地域： Tokyo

摘要

The average thickness tT of a magnetic recording medium meets the requirement that tT≤5.5 [μm], and the dimensional change amount Δw in the width direction of the magnetic recording medium with respect to the tension change in the longitudinal direction of the magnetic recording medium meets the requirement that 700 ppm/N≤Δw.

說(shuō)明書(shū)

7 favorable defective Example 21 90 substantially vertical 65 0.3 6 0.82 7 favorable defective Example 22 90 substantially vertical 73 0.3 6 0.50 8 favorable favorable Example 23 90 substantially vertical 80 0.3 6 0.50 8 more favorable favorable Example 24 90 substantially vertical 65 0.3 6 0.50 8 favorable favorable Example 25 90 substantially vertical 65 0.3 6 0.50 7 favorable favorable Comparative 90 substantially vertical 65 0.6 6 0.50 1 favorable favorable Example 1

Note that respective symbols in Tables 1 and 2 mean the following measured values.

tT: the thickness of the magnetic tape

Δw: the dimensional change amount in the width direction of the magnetic tape with respect to the tension change in the longitudinal direction of the magnetic tape

權(quán)利要求

1
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