Stretched surface recording disk and method of manufacture

Details Stretched surface recording disk and method of manufacture Stretched surface recording disk and method of manufacture

G - Physics

11

B

352/31.3

G11B 5/82 (2006.01) B29D 17/00 (2006.01) G11B 5/84 (2006.01) G11B 23/00 (2006.01)

Patent

CA 1211211

-1- Stretched Surface Recording Disk and Method of Manufacture Abstract A support (12) for a stretched recording film (14) and method of attaching the film (14) to the support (12). The support (12) includes a flat disk-shaped base (16), an annular upstanding rim (18) which terminates in a reference surface (20), an annular radially extending bonding lip (22) which includes a bonding surface (24) inclined with respect to the plane of the base (16), and a groove (26) separating the reference surface (20) and the bonding surface (24). The method of attaching the film (14) to the support (12) includes deflecting the center of the base (16) to decrease the diameter of the bonding surface (24), bonding the film (14) to the bonding surface (24), and ceasing to deflect the base (16) so that the diameter of the bonding surface (24) increases to induce tension in the film (14). A second protective layer of film (42) may be simultaneously stretched over and bonded to the first layer of film (38).

436264

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