Browse Prior Art Database

Tape Erase Apparatus

IP.com Disclosure Number: IPCOM000094261D
Original Publication Date: 1966-Aug-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 77K

Publishing Venue

IBM

Related People

Arrington, WM: AUTHOR [+3]

Abstract

The apparatus automatically erases a magnetic tape record media during its passage from a cartridge prior to recording.

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Tape Erase Apparatus

The apparatus automatically erases a magnetic tape record media during its passage from a cartridge prior to recording.

Tape deck 1 includes hub 2 for accommodating magnetic tape cartridge 3. The latter contains a spool of magnetic tape 4 with loop 5 adapted for engagement by hook 6 on leader 7 as cartridge 3 is loaded into position. Leader 7 normally remains in the apparatus and follows the dashed path shown past a series of tension arms 8 and 9 and combined read-record head 10.

When no cartridge 3 is in position, leader 7 is retained in an accurate position by interposer 12. This is pivotally mounted at 13 and has pin 14 extending from it. Protuberance 3a on cartridge 3 abuts against pin 14 when cartridge 3 is loaded into position, thus pivoting interposer 12 about pivot 13 and releasing leader 7 for movement into the apparatus.

Interposer 12 together with erase coil pair 16 is housed in platform block 17. Coils 16 are arranged to encircle tape 4 as it passes into the equipment through slot 18. Coils 16 are wrapped around two hollow cores 20 and 21 separated by nonmagnetic gap spacer 22. A return magnetic path is provided by outer shell 23 of platform block 17. Low power erasure is effected by a pulsating DC to leads 24 and 25.

The arrangement enables efficient erasure of tape 4 prior to recording by head 10 without the necessity for contact by an erase head. The block structure permits the passage of leader 7 and hook 6 for loading and unl...