Magnetic tape cassette with remaining tape indicator

Details Magnetic tape cassette with remaining tape indicator Magnetic tape cassette with remaining tape indicator

1985-09-09

1990-08-07

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Record medium

In container

G11B 23087

Patent

active

049472763

ABSTRACT:
A single-sided magnetic tape cassette with a remaining tape length indicator comprises a transparent bearing sheet between the tape reels and a transparent window formed in a cassette casing, and an opaque bearing sheet between the tape reels and the opposite surface of the cassette casing. The color of the opaque bearing sheet is selected to provide good color contrast with respect to the magnetic tape. The opaque bearing sheet is white so as to ensure good color contrast with any dark magnetic tape. Alternatively, the color of the opaque bearing sheet may be any color which provides good color contrast for ease of observation of the remaining length of the tape.

REFERENCES:
patent: 3622102 (1971-11-01), Fox
patent: 3705699 (1972-12-01), Siller
patent: 3752113 (1973-08-01), Blechman
patent: 4032987 (1977-06-01), Singer et al.
patent: 4091426 (1978-05-01), Umeda
patent: 4343024 (1982-08-01), Kawai
patent: 4345540 (1982-08-01), Karmin
patent: 4452408 (1984-06-01), Sasaki
patent: 4485421 (1984-11-01), Hoshino
patent: 4524926 (1985-06-01), Nemoto et al.
patent: 4563718 (1986-01-01), Shirako
patent: 4570877 (1986-02-01), Oishi et al.
patent: 4607306 (1986-08-01), Shirako
patent: 4631618 (1986-12-01), Ozawa
patent: 4644433 (1987-02-01), Horikawa et al.
Information Terminals Corp. Sales Publication, Apr. 1971.

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