G - Physics – 11 – B
Patent
G - Physics
11
B
26/124, 352/31.1
G11B 23/033 (2006.01) G11B 23/00 (2006.01) G11B 23/50 (2006.01)
Patent
CA 1312949
7262 ABSTRACT OF THE DISCLOSURE A flexible disk cassette is provided and includes improved means for stabilizing flutter of the disk upon rotation of the latter within the cassette, particularly at the access slot where the disk may be coupled to read/write heads for data recording or reproduction. The cassette includes a flexible data storage disk coated on both sides with a data storage recording medium and a pair of cleaning liners each positioned on a respective side of and in selective contact with the disk. The disk, sandwiched between the liners, is positioned in the cassette between a pair of spaced-apart covers bonded to one another. Respective radially extending access slots are provded in the covers to provide access of the read/write heads to the data storage medium on the disk. Positioned adjacent each radial edge of the access slot and facing the respective liner is a flat-surfaced, raised portion or land. Respective pluralities of spaced apart, radially extending ribs of uniform height are formed on the inside surface of each cover in opposed, interdigitated relation, the respective planes of the surfaces of each plurality of ribs being spaced apart to accommodate the liners and disk while positioning the liners in selective contact with the disk to effect stabilization while maintaining torque necessary to rotate the disk at an acceptable level.
574275
Polaroid Corporation
Smart & Biggar
LandOfFree
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