Browse Prior Art Database

Window Wound Erase

IP.com Disclosure Number: IPCOM000048052D
Original Publication Date: 1981-Dec-01
Included in the Prior Art Database: 2005-Feb-08
Document File: 2 page(s) / 37K

Publishing Venue

IBM

Related People

Russell, RA: AUTHOR

Abstract

The erase cores 3, 4 of the illustrated design eliminate the erase side bar and provide a stronger head sandwich assembly through the inclusion of an extra ceramic spacer 5, which provides support and the glass bonding of both erase core legs. The large difference between the back gap area and the low resistance path for the erase flux. Further, the backgap can be maintained as constant as the gap length tolerance to provide balance between the two erase cores and reproducibility between heads.

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Window Wound Erase

The erase cores 3, 4 of the illustrated design eliminate the erase side bar and provide a stronger head sandwich assembly through the inclusion of an extra ceramic spacer 5, which provides support and the glass bonding of both erase core legs. The large difference between the back gap area and the low resistance path for the erase flux. Further, the backgap can be maintained as constant as the gap length tolerance to provide balance between the two erase cores and reproducibility between heads.

Using this design, single coil 6 is window wound about the core legs as shown. The coil could alternately be wound about the vertical legs 7. Although the winding of the coil is more difficult than the use of a prewound coil, the increased efficiency of the design allows the same erase flux to be obtained using fewer turns.

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