Patent ID: 7633703
Filing Date: 2009-12-15
Classification: G11B

Abstract:
1. A measuring method of flying height of a thin-film magnetic head, comprising the steps of: causing a thin-film magnetic head including a read head element receiving a signal magnetic field from a magnetic disk to contact a rotating contact lane provided on a surface portion of the magnetic disk temporarily by supplying electric power to a flying-height adjusting element provided within said thin-film magnetic head or mounted to said thin-film magnetic head; measuring an output from said read head element at a time of the contact; causing said thin-film magnetic head to fly above the rotating magnetic disk thereafter; measuring an output from said read head element during the flying of said thin-film magnetic head; and measuring a flying height of said thin-film magnetic head by calculating a difference between the output from said read head element at a time of the contact and the output from said read head element during the flying.