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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)

Next, the operation of the recording/reproducing device 30 which has the above-mentioned configuration will be described.

First, the magnetic recording medium cartridge 10A is mounted on the recording/reproducing device 30, the leading end of the magnetic recording medium 10 is drawn out, transferred to the reel 32 via the plurality of guide rollers 35 and the head unit 36, and the leading end of the magnetic recording medium 10 is attached to the reel 32.

Next, when an operation unit, not shown, is operated, the spindle driving device 33 and the reel driving device 34 are driven under the control of the control device 38, thereby rotating the spindle 31 and the reel 32 in the same direction such that the magnetic recording medium 10 runs from the reel 100 toward the reel 32. Thus, while taking up the magnetic recording medium 10 on the reel 32, the head unit 36 records information on the magnetic recording medium 10 or reproduces information recorded on the magnetic recording medium 10.

Furthermore, in the case of rewinding the magnetic recording medium 10 onto the reel 100, the spindle 31 and the reel 32 are rotationally driven in the opposite direction to the direction mentioned above, thereby causing the magnetic recording medium 10 to run from the reel 32 to the reel 100. Also in this rewinding, the head unit 36 records information on the magnetic recording medium 10 or reproduces information recorded on the magnetic recording medium 10.

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