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Machine translation
1. (WO1999009549) TEXTURED WORK-HARDENED MAGNETIC MEDIA AND THEIR FABRICATION
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1999/009549    International Application No.:    PCT/US1998/016960
Publication Date: 25.02.1999 International Filing Date: 14.08.1998
IPC:
B24C 1/04 (2006.01), B24C 1/10 (2006.01), G11B 5/82 (2006.01), G11B 5/84 (2006.01)
Applicants: SEAGATE TECHNOLOGY, INC. [US/US]; Intellectual Property Building 14 920 Disc Drive Scotts Valley, CA 95066 (US) (DE, GB, JP, KR, SG only).
BRAND, John, L. [US/US]; (US) (For US Only).
SUNDARAM, Ramesh [US/US]; (US) (For US Only).
NAGARAJAN, Subrahmanyan [IN/US]; (US) (For US Only)
Inventors: BRAND, John, L.; (US).
SUNDARAM, Ramesh; (US).
NAGARAJAN, Subrahmanyan; (US)
Agent: NIEBUHR, Frederick, W.; Larkin, Hoffman, Daly & Lindgren, Ltd. 7900 Xerxes Avenue South #1500 Bloomington, MN 55431 (US)
Priority Data:
60/055,935 15.08.1997 US
Title (EN) TEXTURED WORK-HARDENED MAGNETIC MEDIA AND THEIR FABRICATION
(FR) SUPPORTS MAGNETIQUES DE STOCKAGE DE DONNEES ECROUIS ET LEUR FABRICATION
Abstract: front page image
(EN)A magnetic data storage disk (16) incorporates a selectively treated head contact zone that is textured by shot peening (86) the disk substrate surface. The preferred approach involves either a controlled stream or a spraying of multiple peening elements against a masked area. The texturing results in overlapping depressions and can be controlled by varying the size, shape and composition of the peening elements. Both the disk and the nozzle (76) for directing the peening elements may be moved (88) so as to effect the desired coverage.
(FR)L'invention porte sur un disque (16) magnétique de stockage de données comportant une zone de contact de tête objet d'un traitement spécial consistant à écrouir par bombardement (86) la surface du substrat du disque. La méthode préférée consiste à projeter sur la surface du substrat des multitudes d'éléments écrouisseurs soit en flux dirigés, soit en arrosage plus large assortie du masquage de certaines parties. La texture qui consiste en dépressions se recouvrant s'obtient en sélectionnant la taille, la forme, la composition, la vitesse des éléments d'écrouissage. Il est possible de déplacer (88) le disque et le canon (76) de projection des éléments écrouisseurs pour obtenir la couverture désiré.
Designated States: DE, GB, JP, KR, SG, US.
Publication Language: English (EN)
Filing Language: English (EN)