Browse Prior Art Database

Magnetic Tape Recording

IP.com Disclosure Number: IPCOM000098469D
Original Publication Date: 1960-Nov-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 33K

Publishing Venue

IBM

Related People

Haines, RS: AUTHOR

Abstract

High volume bit storage on magnetic tape is achieved by staggered recording of two sided magnetic tape, illustrated in cross section at the recording heads.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 2

Magnetic Tape Recording

High volume bit storage on magnetic tape is achieved by staggered recording of two sided magnetic tape, illustrated in cross section at the recording heads.

Heads A C E are spaced apart from one another at the top to produce magnetic effect throughout bit areas a c e. Bits a c e are recorded in layer 1 with crosstalk between bits minimized by spacing and with negligible print through to layer 3 because of the insulating effect of plastic web 2. Heads B D, arranged to face the gaps between heads A C E, produce magnetic effect throughout bit areas b d. Bits b d are recorded without crosstalk between bits and with negligible print through to layer 1.

When print through occurs such as at area d', there is produced a pseudo bit in layer 1. Pseudo bit d' is distinguishable from neighboring bits c and e by its relatively small size and by its placement within the gap. Reading circuits minimize its effect.

1

Page 2 of 2

2

[This page contains 1 picture or other non-text object]