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Technology Stocks : INVX Innovex Comdex Winner !!

INVX 22.05

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Dec 26 9:30 AM EST

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To: Mark Oliver who wrote (1959)	1/1/1998 3:56:00 PM
From: Gus	Read Replies (1) of 3029

Interesting article by a Fujitsu scientist re: Fujitsu's pico-cap suspension which was published in the October 1997 issue of Data Storage but which just came online. "Wireless pico suspension improves disk drive reliability" datastorage.com The reliability of magnetic disk drives is directly related to the durability of the head-disk interface (HDI), stability of the flying slider, and the shock resistance of the suspension mechanism. The first requirement - interface durability - can be best met by operating the slider under as low a load as possible, while the second requirement - slider stability in flight - requires a high resonant suspension. Flying stability is of particular concern when MR heads are used with pico sliders. A MR head needs four signal wires compared to two for conventional inductive heads. The additional stiffness can have a destabilizing effect on the pico slider. As for satisfying the third requirement - shock resistance - the lighter the suspension the better. Both two- and three-piece wireless suspensions have been developed to addressed these issues, but two-piece suspensions, such as the "pico-cap" suspension developed by Fujitsu offer reliability and performance advantages over three-piece designs...... Does this then make the battle HIF vs TSA vs Pico-cap? A prosperous New Year to everybody! Gus

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