Recording medium storage package having improved rosette

An enclosure for securing and storing at least one disc-shaped element having a central aperture therein, said enclosure comprising:

• a substantially planar base having a first area for receiving a centrally apertured disc-shaped element;
• a substantially planar cover;
• a spine panel pivotably connecting said base and cover for allowing the base and cover to pivot between enclosure open and closed positions;
• a two part rosette for securing said at least one disc-shaped element in said enclosure, said rosette including;
• a first part centered in said area on said base, said first part comprising at least two upstanding, circularly spaced apart segments having arcuate outer peripheral surfaces dimensioned for engaging the central aperture of a disc-shaped element at circularly spaced apart positions around its central aperture;
• a second part attached to said cover, said second part comprising at least two elongate, upstanding ribs extending radially from a position on said cover which is centered on said area of said base, the number of ribs on said cover corresponding to the number of segments on said base, the ribs being positioned and dimensioned such that, when the enclosure is closed, the ribs on the cover enter said first part radially inwardly of said segments on said first part with the radial outermost edge of each of the ribs contacting the radially inside surface of the corresponding arcuate segments for biasing the arcuate segments radially outwardly to better retain a disc-shaped element when it is mounted on said arcuate segments in said first area.