Browse Prior Art Database

Stationary Magnetic Write Head

IP.com Disclosure Number: IPCOM000076585D
Original Publication Date: 1972-Mar-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 2 page(s) / 44K

Publishing Venue

IBM

Related People

Steele, SG: AUTHOR

Abstract

The write head 21 is coextensive with the magnetic media 22 and provides residual magnetic flux patterns or data bits 24A, 24B, 24C, etc. on the surface of media 22, without relative movement between head 21 and media 22.

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Stationary Magnetic Write Head

The write head 21 is coextensive with the magnetic media 22 and provides residual magnetic flux patterns or data bits 24A, 24B, 24C, etc. on the surface of media 22, without relative movement between head 21 and media 22.

Head 21 comprises a series of parallel electric conductors 25 fixed on and carried by a conductor support 26. Conductors 25 are positioned at right angles to and are in contact with recording media 22, particularly with the surface 22A of media 22 provided with a magnetizable coating, such as of finely divided iron particles. The individual conductors 25 are selectively pulsed with a sufficient current in one of two directions, so that the resulting magnetic field around conductors 25 magnetize the recording media 22 in one of two directions, depending on the direction of current flow. The unique magnetic pattern defined by the flux patterns 24A, 24B, 24C, etc. around the individual conductors 25 can be formed on the media 22 to represent, bit-by-bit, recorded data; and the desired data coding scheme determines the number of conductors 25 pulsed and the direction of current flow. For the particular coding scheme represented by the illustrated magnetic flux patterns 24A, 24B, and 24C, etc., the conductors 22 have current flowing in them in the directions A, B as illustrated.

Head 21 provides the same data coding or data bits as is more conventionally provided by a write head 28 having a magnetic media 31 moving bene...