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Recording and/or Reproducing Head Assembly

IP.com Disclosure Number: IPCOM000081034D
Original Publication Date: 1974-Mar-01
Included in the Prior Art Database: 2005-Feb-27
Document File: 2 page(s) / 48K

Publishing Venue

IBM

Related People

Cuzner, DE: AUTHOR [+4]

Abstract

A recording and/or reproducing head assembly shown in the figure consists of a pivoted arm 1 supporting at one end, a plurality of recording and/ or reproducing heads 2. The heads 2 are supported on flexible mountings 3, each of which is attached to one of a plurality of legs 4 forming the arm 1. In operation, the assembly is mounted adjacent a stack of disks, not shown, with the heads 2 interleaving the disks. Movement of the heads 2 from one transducing position to another over the associated disk surfaces is achieved by an electromagnetic actuator 5 disposed at the opposite end of the arm to the heads. The spacing between the legs 4 of the arm 1 is sufficient to accommodate the disks during access operations, if necessary.

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Recording and/or Reproducing Head Assembly

A recording and/or reproducing head assembly shown in the figure consists of a pivoted arm 1 supporting at one end, a plurality of recording and/ or reproducing heads 2. The heads 2 are supported on flexible mountings 3, each of which is attached to one of a plurality of legs 4 forming the arm 1. In operation, the assembly is mounted adjacent a stack of disks, not shown, with the heads 2 interleaving the disks. Movement of the heads 2 from one transducing position to another over the associated disk surfaces is achieved by an electromagnetic actuator 5 disposed at the opposite end of the arm to the heads. The spacing between the legs 4 of the arm 1 is sufficient to accommodate the disks during access operations, if necessary.

The actuator 5 consists of a hollow coil 6 wound on a former 7 secured to the arm 1. An E-shaped permanent magnet 8 is secured to a supporting member 9 by a clamp 10. The member 9 also carries the housing 11 for the top bearing of the shaft, about which the arm 1 is pivoted. The actuator coil 6 surrounds the center leg 12 of the E-shaped magnet, with the other two legs 13 and 14 extending on each side of the coil providing the necessary air gaps across which the magnetic field is produced to link the coil. Thus, when current is passed through the coil 6, it experiences a force which causes it to perform translational movement to rotate the arm 1, and thereby move the heads 2 to the desired locations...