Maxtor Corporation

International Business Machines Corporation

Seagate Technology Incorporated

Kwang Kon Kim

Ramon Clasara

Walter Crofton

Gerardo Buitron

Thuan Luu

John Grow

David Spaulding

Bill Liu

James K Howard

Anthony W Wu

Ian L Sanders

Richard H Ahlert

Bruce Hachtmann

Clarence Gapay

Huan Nguyen

Tom O'Hare

Charles F Peabody

Dan Palmer

Peter Cheng

William Maida

A method for manufacturing a magnetic disk is provided that includes the steps: forming a layer of a lubricant material on a surface of a magnetic storage medium, the layer of lubricant material also being located on an interior and/or exterior edge of the medium; and removing at least some of the lubricant material from the edgeof the medium.

Disk burnishing device

An information-storage media is provided that includes:

Method for producing single-sided sputtered magnetic recording disks

A method for manufacturing a magnetic disk is provided that includes the steps:

Magnetic disk with uniform lubricant thickness distribution

Various methods and apparatus for simultaneously processing two single-sided hard memory disks is provided. Disks are positioned in pairs, with one surface of one disk positioned adjacent one surface of the second disk, with the disk surfaces touching or with a slight separation between them. In this back-to-back orientation, the disk pairs may be processed using conventional double-sided disk processing equipment and techniques. However, each disk will not have two active surfaces. Because of the positioning of the disks during processing, only one surface of each disk will be subjected to full processing. Therefore, each disk will only have one active side.

Method of simultaneous two-disk processing of single-sided magnetic recording disks

Method for manufacturing single-sided sputtered magnetic recording disks

A single-sided magnetic hard diskis provided that includes opposing first and second sidesandhaving opposing first and second chamfersandrespectively. The first chamferis dissimilar (or differently shaped) from the second chamfer

Information-storage media with dissimilar outer diameter and/or inner diameter chamfer designs on two sides

Various apparatus and methods are provided for handling and transporting pairs of gap merge disks. A transfer member is provided in one embodiment which engages the outer perimeter of a pair of disks at three locations. The transfer member is configured to induce an angled tilt to the respective disks such that the bottom perimeter edges of the disks are spaced apart and the top perimeter edges of the disks are in contact. A mandrel is also provided which is configured to engage a pair of disks oriented in this fashion at the center aperture for purposes of transferring the pair of disks from the transport device to a second location for processing or transfer to another processing device.

Dual disk transport mechanism processing two disks tilted toward each other

Single-sided sputtered magnetic recording disks

Various apparatus and methods are provided for lubricating hard memory disks. A mandrel is provided in one embodiment with three rows of teeth and provides a stable, three-point engagement with the inside edge of the disks at the center aperture. When removing disks from a cassette, the mandrel preferably places a uniform space between the disks. In a second embodiment, the mandrel may be used to lubricate single-sided hard memory disks. The single-sided hard memory disk may be positioned on the mandrel in pairs in a gap merge orientation, or equally spaced apart.

Method of lubricating multiple magnetic storage disks in close proximity

A thin film metal alloy magnetic recording disk has an improved protective overcoat which is both wear resistant and which creates a low level of stiction in a rigid disk file. In a preferred embodiment the overcoat is a film of essentially amorphous carbon or hydrogen-containing carbon with relatively small amounts of additives of iron (Fe), tungsten (W) or tungsten-carbide (WC). The structure of the overcoat is a relatively smooth planar carbon surface with discrete clusters of the additives which project slightly above the smooth carbon surface. The specific additives to the carbon overcoat improve the wear resistance of the disk and permit the sliders to contact the disks in contact start/stop (CSS) operation without damage to any of the disk file components.

Carbon overcoat for a thin film magnetic recording disk containing

A minimal corrosion resistor structure and deposition technique for superconductive circuits, with mutually protective niobium oxide passivation ring, gold corrosion barrier film and titanium resistive layer. Niobium has an intrinsic oxide of Nb.sub.2 O.sub.5, which must be removed from a contact area designated by an opening in photoresist; the development process leaves a photoresist overhang. The corrosion barrier film is deposited through the opening. The resistive metal layer is deposited over the corrosion barrier film through the same opening. The gold corrosion barrier film prevents the titanium resistive metal layer from making corrosive contact with the niobium. The titanium resistive metal layer encapsulates the gold corrosion barrier film to prevent diffusion between the gold and further layers to be deposited subsequently. It would normally be possible for the titanium to spill over the gold and make corrosive intimate contact with the niobium; a self-alignment technique prevents such contact. The gold corrosion barrier film is sharply focused to form an area corresponding to the opening in the photoresist. An unfocused plasma oxidation step, which follows the gold deposition, grows an extrinsic Nb.sub.2 O.sub.5 passivation ring about the gold. The titanium resistive metal is then deposited with a wider focus than that of the gold corrosion barrier film, through the same opening; the titanium resistive metal layer deposits over the edge of the gold, encapsulating the gold with a diffusion barrier.

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San Jose, CA, United States of America

Kwang Kon Kim