Tape cartridge static eliminator

Details Tape cartridge static eliminator Tape cartridge static eliminator

1984-07-09

1986-10-28

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record medium

In container

36013032, 36013033, 242199, G11B 2302

Patent

active

046202552

ABSTRACT:
Static electric charge build-up is eliminated in tape cassettes having a housing with a take-off spool and a take-up spool for magnetic tape mounted in the housing. First and second tape guide support pins are mounted in the housing on the take-off spool side. A stationary metal guide sleeve is disposed on the first pin and an electrically conductive plastic guide roller is rotatably mounted on the second pin. The magnetic tape path through the cassette housing is such that the back side of the tape engages the metal guide sleeve and the magnetic coating side of the tape is against the plastic guide roller. A smooth flat metal member is mounted for electrical contact against adjacent ends of the metal sleeve and the plastic roller to complete an electric path therebetween. This cancels the electrostatic charges on the plastic roller and the magnetic coating of the tape.

REFERENCES:
patent: 3601654 (1971-08-01), Long et al.
patent: 4204654 (1980-05-01), Gebeke
patent: 4285020 (1981-08-01), Sato
patent: 4335857 (1982-01-01), Pfost et al.
patent: 4345284 (1982-08-01), Saito
patent: 4347549 (1982-08-01), Fechner
patent: 4429823 (1984-02-01), Umehara
patent: 4509087 (1985-04-01), Jager et al.

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