Stretched surface recording medium.

摘要

Stretched surface recording disk (SSR) (10) comprising an annular support (12) having raised annular ridges (28 and 42) at its inside and outside diameters (22 and 30) with a base portion (24) in between the two ridges, and an annular recording medium film (14) held in radial tension and stretched across the base portion by adhering the film to attachment surfaces (48 and 36) near the inside and outside diameters respectively. The bond between the recording medium film and the support at the inner and outer attachment surfaces is formed by an electron beam cured adhesive such as a mixture of hydantoin hexacrylate and dimethacrylamide. By manufacturing the stretched surface recording disks with the e-beam process, significantly less time is required to adhere each stretched recording medium to its support, and the quality of the bond between the support and recording medium film is improved. SSR are capable of higher bit density than floppy disks of equivalent surface area and are not as sensitive to contact between the media and a flying magnetic head ("head crashes") as rigid disks.