Abstract: A stabilizer insert is attached to a magnetic tape cartridge, where the cartridge includes a magnetic tape, a bay portion where the magnetic tape is exposed to the outside of the tape cartridge so that a read/write device can physically contact the tape. The stabilizer insert provides tension on the tape sufficient to maintain contact between the tape and the read/write device.

Abstract: A corner roller for guiding a tape recording/reproducing medium in a tape cartridge having a body defining an axially extending bore and an undulating circumferential surface. The undulating circumferential surface has an inverted radius for contacting a drive belt in a tape cartridge. The circumferential surface of the body defines a pair of opposed end portions and a center portion having about the same diameter d1, in which the center portion is respectively separated from the end portions by a pair of spaced intermediate portions, each having a diameter d2 less than the diameter d1 of the end and center portions. The circumferential surface in profile defines a surface which is a smooth surface of revolution axially traversing from a first diameter d1 to a second smaller diameter d2 to a middle portion having about the first diameter d1, then to another portion having a smaller diameter d2 merging with an end portion 66 having a larger diameter d1.

Abstract: A corner roller for guiding a tape recording/reproducing medium in a tape cartridge having a body defining an axially extending bore and an undulating circumferential surface. The undulating circumferential surface has an inverted radius for contacting a drive belt in a tape cartridge. The circumferential surface of the body defines a pair of opposed end portions and a center portion having about the same diameter d1, in which the center portion is respectively separated from the end portions by a pair of spaced intermediate portions, each having a diameter d2 less than the diameter d1 of the end and center portions. The circumferential surface in profile defines a surface which is a smooth surface of revolution axially traversing from a first diameter d1 to a second smaller diameter d2 to a middle portion having about the first diameter d1, then to another portion having a smaller diameter d2 merging with an end portion 66 having a larger diameter d1.

Abstract: A magnetic disk cartridge having a plurality of generally rectangular-shaped strip liners placed in sliding contact with a magnetic recording sheet to protect and clean the sheet. The strip liners are provided in pairs on each side of the magnetic recording sheet, each pair having first and second strip liners disposed on opposite sides of a central axis of the magnetic recording sheet. The strip liners for a 3.5 inch floppy magnetic disk cartridge have a length of approximately 4 to 5 cm and a width of approximately 1.6 to 2 cm. The strip liners are formed of a nonwoven fabric and are thermally welded to an inside surface of the upper and lower casings within a circumference of the magnetic recording material. The strip liners reduce manufacturing costs over conventional disk-shaped liners, and also provide a significant improvement in quality.