초록 ▼

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 ba

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 dimethylacrylamide. 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 suppport, 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.

대표청구항 ▼

A stretched surface recording disk comprising: (A) an annular support having (1) at least one base portion between its inside and outside diameters; (2) an outer raised annular ridge attached to and projecting from the base portion; and (3) at least one circular outer attachment surface located at o

A stretched surface recording disk comprising: (A) an annular support having (1) at least one base portion between its inside and outside diameters; (2) an outer raised annular ridge attached to and projecting from the base portion; and (3) at least one circular outer attachment surface located at or near the outer circumference of the annular support and having a diameter greater than that of the innermost part of the outer raised annular ridge; (B) a circular recording medium film concentric with the annular support held in radial tension across and out of contact with the base portion, being supported by the outer raised annular ridge and adhered to the outer attachment surface of the support; (C) by a cured adhesive selected from the group consisting of acrylate and methacrylate functional adhesives which are curable by ionizing radiation and which have a shear strength effective to maintain the radial tension of the circular recording medium film, provided that cyanoacrylate adhesives are excluded from such adhesives.