Characteristics of Flexible-Film Disks

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概要

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• To achieve high-density recording with a high numerical aperture (NA) pickup, we produced a flexible optical disk system that has a small axial runout, enabling the pickup to follow the focal servo more easily. Young’s modulus, the film thickness, and the position of the radius determine the rigidity of a film. Therefore, we defined the length to which a stabilizer pushing on a disk deformed the disk as the repellent force of the film and investigated the relationship between this repellent force and the axial runout of the disk. Consequently, by developing films with a specific repellent force, the axial runout of a variety of disks was reduced to less than 10 μm and high-density recording was achieved at a linear velocity of 13 m/s.

• 2005-05-15

著者

• Aman Yasutomo

  Ricoh Company Ltd. Manufacturing Technology R&d Center

• Onagi Nobuaki

  Ricoh Co., Ltd., 16-1 Shinei-cho, Tsuzuki-ku, Yokohama 224-0035, Japan

• Murata Shozo

  Ricoh Co., Ltd., 16-1 Shinei-cho, Tsuzuki-ku, Yokohama 224-0035, Japan

• Aman Yasutomo

  Ricoh Co., Ltd., 16-1 Shinei-cho, Tsuzuki-ku, Yokohama 224-0035, Japan

関連論文

• High-Speed Flexible Optical Disk for Broadcast Archival Storage
• Experimental Analysis of Axial Run-Out in Flexible Optical Disks
• High-Speed Recording up to 15,000 rpm Using Thin Optical Disks
• Reducing Axial Run-Out in a Flexible Optical Disk by Restricting Airflow to the Aerodynamic Stabilizer
• Characteristics of Flexible-Film Disks
• Aerodynamic Stabilization of Flexible Optical Disk with Triangularly Arranged Stabilizer System
• High-Density Recording on Air-Stabilized Flexible Optical Disk
• Effect of Stabilizer in Reducing Effects of Axial Runout on a Flexible Optical Disk

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