Title:
【発明の名称】剛性ディスク記憶媒体用改良基盤及び該基盤の製造方法と装置
Document Type and Number:
Japanese Patent JPS61502787
Kind Code:
A
Abstract:
A substrate including a disk (36) having a pair of opposed faces and being coined to provide a sub-micron flatness and smoothness for the disk faces. The coined disk can then be coated with a layer of storage material and used as a storage medium. Apparatus and a method for forming the coined substrate includes means for moving a plurality of disks along a predetermined path (56) after the disks have been formed by blanking or stamping. The disks are cleaned before being coined and then stacked into containers which can be closed for transit to a point of use. The coining of the disks and the placement of the disks in containers is done under clean room conditions and the resulting coined substrates are free of flaws and defects encountered with the practice of conventional substrate forming techniques.
Inventors:
Kho, Thomas You
Application Number:
JP50289285A
Publication Date:
November 27, 1986
Filing Date:
June 19, 1985
Export Citation:
Assignee:
THE FURUKAW ELECTRIC CO.,LTD.
Kawasaki Steel Co., Ltd.
ITOCHU Corporation
Kawasaki Steel Co., Ltd.
ITOCHU Corporation
International Classes:
B29D17/00; G11B5/716; G11B5/73; G11B5/82; G11B5/84; G11B7/26; G11B23/00; (IPC1-7): G11B5/704; G11B5/82; G11B5/84
Attorney, Agent or Firm:
Kyozo Yuasa (4 outside)