Process of manufacturing coil layers using a novel...

Details Process of manufacturing coil layers using a novel... Process of manufacturing coil layers using a novel...

2006-08-15

2006-08-15

Tugbang, A. Dexter (Department: 3729)

Metal working

Method of mechanical manufacture

Electrical device making

C029S603230, C029S603250, C029S603080, C029S606000, C430S320000, C430S313000, C360S122000, C360S123090

Reexamination Certificate

active

07089651

ABSTRACT:
A method for forming at least two layers of electrical coils and their supportive resistive layers for a magnetic write head having an ultra-short yoke so that the second and any additional coil layers are formed on flat resistive surfaces to eliminate problems associated with inter- and intra-layer shorting and with shorting between coil and yoke. The resistive layers are formed with flat surfaces and desired apex angles by using a novel two-step photoresist scheme in which a layer of photoresist is first photoexposed and developed, then photoexposed a second time to cure a surface region that will remain flat during a final low temperature curing process.

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