Sony Corporation

Tetsuo Sawa

Kazuo Ozawa

Tsuneo Nemoto

Shojiro Asami

An improved disc cassette having a shutter-closeable aperture, wherein the shutter is moved against the force of a confined coil compression spring into an aperture-open condition and is there latched by a transversely deflectable latch pawl normally biased into latching position and operable by manual pinching of the cassette to release the pawl to permit the spring to return the shutter to the aperture-closed position.

Micro floppy disc cassette

A flexible magnetic disc cassette contains a flexible magnetic disc. The disc cassette carries a slidably mounted shutter which closes or opens head access openings. The shutter has openings formed therein, and has projections inserted into a groove in the cassette for guiding the shutter. The edge of the disc cassette supporting the shutter has a plurality of projections which are provided for controlling operation of the shutter in association with the opening and closing operations of the shutter.

Flexible magnetic disc cassette with a slidably mounted shutter

A flexible magnetic disc cassette contains a flexible magnetic disc which is driven by a shaft associated with a driving device. The disc is contained within a cover having an upper half and lower half. An anti-wearing member is attached on an inner surface of the upper half of the cover for abutment with the driving device shaft so as to correct warpage of the upper half of the cover.

Magnetic disc device

A floppy disc is contained in a relatively hard encasement. In order to improve the function of a cleaning sheet installed in the floppy disc cassette encasement, a flexible pressure member is provided on an inside of the cassette which presses a portion of the cleaning sheet against the recording surface of the floppy disc.

Growing community of inventors

Tagajo, Japan

Tetsuo Sawa