The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 15, 2000
Filed:
Mar. 17, 1995
International Business Machines Corporation, Armonk, NY (US);
Abstract
A magnetic recording disk of a disk drive apparatus is constructed having a radially sloped surface, so that the outer area of the disk is thinner than the inner area. The radially downward slope of the disk surface has the effect of increasing the crown of the disk head, this effect being greatest closest to the disk axis and decreasing as the head moves toward the outer diameter. A head landing zone is preferably located at the inner part of the disk surface, where the crown is greatest, reducing stiction during disk start-up. Furthermore, the gradual reduction in crown as the head moves radially outward compensates for the increasing velocity of the head relative to the disk surface, achieving a more uniform flying height of the disk head.