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Integrated Thin Film - Core Magnetic Recording Head

IP.com Disclosure Number: IPCOM000041173D
Original Publication Date: 1987-Nov-01
Included in the Prior Art Database: 2005-Feb-02
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Anand, A: AUTHOR [+4]

Abstract

The use of a batch-fabricated, thin film read/write head provides for high density, high capacity magnetic recording performance on standard, readily available "floppy disks". Combining the thin film head with a core head provides downward compatibility for low density applications. The bonding of a conventional read- write core unit into a common unit with the all thin film head and the lapping into a single slider provides for the aforementioned high performance while at the same time providing for complete read and write compatibility with low performance "floppy disk" storage devices presently on the market.

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Integrated Thin Film - Core Magnetic Recording Head

The use of a batch-fabricated, thin film read/write head provides for high density, high capacity magnetic recording performance on standard, readily available "floppy disks". Combining the thin film head with a core head provides downward compatibility for low density applications. The bonding of a conventional read- write core unit into a common unit with the all thin film head and the lapping into a single slider provides for the aforementioned high performance while at the same time providing for complete read and write compatibility with low performance "floppy disk" storage devices presently on the market. Straddle erase, overwrite and handling of high signal levels from the media, all required for the latter task, make the thin film head a poor candidate, but are readily handled by the conventional, core head arrangement.

The presence of manifold read and write gaps requires judicious placement of the various individual heads so that the overall slider can meet the requisite skew and azimuth relationships. Placement of the thin film head gap in line tangentially with the core read-write gaps with respect to direction of motion of the disk achieves this tolerance.

As shown in the figure, a core head 1 is fastened to a ceramic support 2 together with a thin film head substrate 3. The thin film read/write gap is formed at gap line 4 in line with the read/write gap 5 of the core head 1. Straddle erase gaps 6...