Title: Localized-field static magnetizing device

Abstract: A localized-field static magnetizing device consists of a non-magnetic substrate having a magnetic layer thereon that contains a succession of adjoining zones of alternately differing lengths and having magnetic inductions of alternately opposing directions. One of the lengths is much greater than the other and the magnetic layer has a high coercive field.

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Inventors: Lazzari, Jean P. (Montfort L'Amaury, FR)
Helle, Michel (Marcq, FR)

Application Number: 880331
Filing Date: 1978-02-23
Publication_date: 1980-03-18
Assignee: Compagnie Internationale pour l'Informatique (Paris, FR)
Primary Class(es): 235/450 235/493, 360/44, 360/55, 360/110
Other Classes:
US Patent Ref:

3025503	Mar, 1962	Perry	360/44.
3100834	Aug, 1963	Demer	235/493.
3409853	Nov, 1968	Guerth	360/16.
3613101	Oct, 1971	Leonard et al.	235/493.

Other Refs:
Primary Examiner: Cook, Daryl W.
Assistant Examiner:
Attorney: Cameron, Kerkam, Sutton, Stowell & Stowell