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Browse Prior Art Database

Laminated Magnetic Storage Array

IP.com Disclosure Number: IPCOM000093866D
Original Publication Date: 1966-Mar-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 46K

Publishing Venue

IBM

Related People

Ahn, J: AUTHOR [+2]

Abstract

The method is for forming a storage array from laminated ferrite sheets. As shown in A, laminated ferrite sheet 2, made of a shrinkable material, is superimposed over laminated ferrite sheet 4, which is pliable and essentially nonshrinkable, to form composite 3. Only one of these sheets need be magnetic.

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Laminated Magnetic Storage Array

The method is for forming a storage array from laminated ferrite sheets. As shown in A, laminated ferrite sheet 2, made of a shrinkable material, is superimposed over laminated ferrite sheet 4, which is pliable and essentially nonshrinkable, to form composite 3. Only one of these sheets need be magnetic.

Adhesive 6 to which a ferrite powder has been added is selectively disposed on substrate 8 as shown in B. Then, composite 3 is placed about adhesive 6 on substrate 8 as depicted in C. After the adhesive sets and composite 3 are bonded to substrate 8, the excess composite 3 is removed to leave laminated strips.

Two sets of drive lines 10 and 12 having a suitable ceramic insulation are then selectively placed about composite 3. At least one drive line from set 10 and at least one drive line from set 12 are in quadrature over the center of the composite surface as depicted in D.

The entire assembly is then heated for a selected period of time until composite 3 curls over the intersection of the drive lines such as depicted in E. Since the adhesive also softens during the heat treatment, the end of composite 3 that is away from the adhesive prior to the heat treatment, becomes bonded to the end held fast to the adhesive during the curling operation. The assembly is then fired and the substrate removed.

In this fashion a storage array is provided in which the drive line impedance is low compared to a bulk core plane array.

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