Low inductance, ferrite sub-gap substrate structure for...

Details Low inductance, ferrite sub-gap substrate structure for... Low inductance, ferrite sub-gap substrate structure for...

2005-05-17

2005-05-17

Klimowicz, William J (Department: 2652)

Dynamic magnetic information storage or retrieval

Head

Plural gaps

C360S122000, C360S125330

Reexamination Certificate

active

06894869

ABSTRACT:
A thin film magnetic recording head is fabricated by forming a substrate from opposing ferrite blocks which have a ceramic member bonded between them. This structure is then diced to form a plurality of columns, wherein each column has a ferrite/ceramic combination. Each column represents a single channel in the completed head. A block of ceramic is then cut to match the columned structure and the two are bonded together. The bonded structure is then cut or ground until a head is formed, having ceramic disposed between each channel. A ferrite back-gap is then added to each channel, minimizing the reluctance of the flux path. The thin film is patterned on the head to optimize various channel configurations.

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IBM TDB “Hybrid Thin R W Head with Bonding by Laser Beam”, vol. 19, issue No. 2, pp. 681-682 (Jul. 1976).

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