Cleaning sheet for a magnetic disc

Details Cleaning sheet for a magnetic disc Cleaning sheet for a magnetic disc

1989-07-21

1991-07-02

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record medium

In container

206444, 428900, G11B 2303, B65D 8530

Patent

active

050293192

ABSTRACT:
Disclosed is a disc cartridge comprising a cartridge case, a disc set rotatably in the cartridge case, and cleaning sheets secured to the inside of the cartridge case, wherein at least the disc side surface layer of each cleaning sheet, which is brought into direct sliding contact with the disc in operation, is almost entirely composed of ultrafine fibers having a diameter of less than 10 .mu.m producing an excellent disc cleaning effect on the disc, lessening the errors in the recording and reproducing operations of the disc.

REFERENCES:
patent: 4419164 (1983-12-01), Martinelli
patent: 4709816 (1987-12-01), Matsumoto et al.
patent: 4803584 (1989-02-01), Doi et al.
patent: 4812938 (1989-03-01), Rogers et al.

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