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Technology Stocks : Ampex Corporation (AEXCA) -- Ignore unavailable to you. Want to Upgrade?

To: B. A. Marlow who wrote (5039)	1/31/1999 9:41:00 AM
From: Paul Lee	Read Replies (1) \| Respond to of 17679

A few comments, 1. AXC is marginable, it is a AMEX company. It then becomes a question of what house you own it in, and what their in-house rules are! 2. The WSJ online is worth the price! 3. So many posts, has the info been put up before? Patent Number 5861220 ISSUE DATE: Jan-19-1999 Method and apparatus for providing a magnetic storage and reproducing media with a keeper layer having a longitudinal anisotropy ASSIGNEE: Ampex Corporation Redwood City, CA INVENTOR: Coughlin; Thomas M. Atascadero, CA OTHER DETAILS: Legal Rep: Cesari And McKenna Application Date: Aug-06-1996 Application Number: 692618 Primary Examiner: Zirker; Daniel ABSTRACT: A magnetic storage medium comprises a keeper layer of magnetic, saturable material disposed upon a magnetic storage layer. The keeper layer is disposed above the magnetic storage layer, and a non-magnetic "break" layer may be used between the keeper and the storage layer to reduce the exchange coupling between these layers. To increase the ability of the keeper layer to shunt flux from the magnetic storage layer, a longitudinal anisotropy is induced in the keeper layer. This desired magnetic orientation of the keeper which facilitates maintaining theregularity (i.e., relative uniformity) of the transitions, and reducing the magnetic interaction between transitions as the spacing between transitions is reduced to provide denser media. Specifically, the longitudinal anisotropy may be oriented either circumferentially or radially relative to the plane of rotation of the magnetic storage layer.