Magnetic disk cartridge having strip liners

摘要

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.