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:
May. 03, 2005
Filed:
Jul. 27, 2001
Ping-wei Chang, San Jose, CA (US);
Chie Ching Poon, San Jose, CA (US);
Andrew C. Tam, Saratoga, CA (US);
Ping-Wei Chang, San Jose, CA (US);
Chie Ching Poon, San Jose, CA (US);
Andrew C. Tam, Saratoga, CA (US);
Hitachi Global Storage Technologies Netherlands B.V., Amsterdam, NL;
Abstract
Embodiments include a method for adjusting the twist of an air bearing surface of at least one slider to substantially match a target values for twist, the at least one slider having a back surface opposite the air bearing surface, the back surface including two sets of diagonally opposite corner regions, with each set including one corner region adjacent to a leading edge of the slider and one corner region adjacent to a trailing edge of the slider. The method includes forming a first mechanical scribe on the back surface extending through at least a portion of the corner regions adjacent to the leading edge of the slider and forming a second mechanical scribe on the back surface extending through at least a portion of the corner regions adjacent to the trailing edge of the slider. The method also includes measuring the twist of the slider, and forming a first group of laser scribes on the back surface in one of the two sets of diagonally opposite corner regions, wherein each of the laser scribes intersects with one of the first and second mechanical scribes. The method also includes measuring the twist of the slider and comparing the values to the target value for twist, and forming additional laser scribes if the target value for twist is not reached.