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:
Jan. 27, 1998
Filed:
Sep. 19, 1995
Gurinder P Singh, San Jose, CA (US);
Satya P Arya, San Jose, CA (US);
Douglas J Krajnovich, San Jose, CA (US);
Timothy O'Sullivan, San Jose, CA (US);
Pantelis S Alexopoulos, San Jose, CA (US);
Chih-Kung Lee, Taipei, TW;
International Business Machines Corporation, Armonk, NY (US);
Abstract
An apparatus and method for automatically adjusting the gram load, static attitude and the flying height of the slider in a head suspension assembly comprising one or more lasers, a fiber optic switch, a measurement apparatus and a computer control device. The fiber optic switch includes a plurality of fiber optic lines which direct the output of the laser to well-defined regions on the suspensions in a disk drive. Irradiation of the suspension by the laser causes a load change which alters the flying height, and/or a static attitude change in the slider. In the method of the present invention, the initial gram load, flying height or static attitude of the slider is measured by the measurement apparatus and the control means calculates how much energy is required to cause the change needed to achieve the desired condition. Other information, such as the type of laser to be used is also specified by the control device. The laser then delivers output to the suspension through the fiber optic line and the static attitude, flying height, or gram load is remeasured to determine if additional adjustment is required.