Improvement of Overwrite Jitter of a Phase-Change Optical Disk with Al-Alloy Double-Reflective-Layer Structure
スポンサーリンク
概要
- 論文の詳細を見る
To obtain minimum overwrite jitter after $10^{4}$ overwrites, the cause of degradation of readout waveforms after $10^{4}$ overwrites was investigated by transmittance electron microscopy (TEM). To decrease the temperature of the recording film at the track center during recording, an Al-alloy double-reflective-layer structure is proposed. Two relationships, one between the thermal conductivity of the first reflective layer and the temperature of the recording film during recording and the other between the thermal conductivity and the readout waveforms after overwrites of more than $10^{5}$ times, were investigated using thermal simulation and a digital versatile disk (DVD) disk tester. The optimized disk has a minimum overwrite jitter after $10^{5}$ overwrites at a linear velocity of 6 m/s.
- 2007-12-15
著者
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Terao Motoyasu
Central Resarch Laboratory Hitachi Ltd.
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Hirotsune Akemi
Central Research Laboratory Hitachi Ltd.
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Tamura Reiji
R&D division, Hitachi Maxell Ltd., 6139-1 Ohnogo, Mitsukaido, Ibaragi 300-2595, Japan
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Hirotsune Akemi
Central Research Laboratory, Hitachi Ltd., 1-280 Higashi-Koigakubo, Kokubunji, Tokyo 185-8601, Japan
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Miyauchi Yasushi
R&D Division, Development & Technology Group, Hitachi Maxell Ltd., 6139-1 Ohnogo, Joso, Ibaraki 300-2595, Japan
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Miyamoto Makoto
R&D Division, Development & Technology Group, Hitachi Maxell Ltd., 6139-1 Ohnogo, Joso, Ibaraki 300-2595, Japan
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Tokushuku Nobuhiro
Development Division, Hitachi-LG Data Storage, Inc., 4F MSC Center Bldg., 22-23 Kaigan 3-chome, Minato-ku, Tokyo 108-0022, Japan
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Tokushuku Nobuhiro
Development division, Hitachi-LG Data Storage, Inc., 4F MSC Center Bldg., 22-23 Kaigan, 3-chome, Minato-ku, Tokyo 108-0022, Japan
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Tamura Reiji
R&D Division, Development and Technology Group, Hitachi Maxell Ltd., 6139-1 Ohnogo, Joso, Ibaraki 300-2595, Japan
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Miyauchi Yasushi
R&D Division, Development and Technology Group, Hitachi Maxell Ltd., 6139-1 Ohnogo, Joso, Ibaraki 300-2595, Japan
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Terao Motoyasu
Central Research Laboratory, Hitachi Ltd., 1-280 Higashi-Koigakubo, Kokubunji, Tokyo 185-8601, Japan
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Miyamoto Makoto
R&D Division, Development and Technology Group, Hitachi Maxell Ltd., 6139-1 Ohnogo, Joso, Ibaraki 300-2595, Japan
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