Patent ID: 8154826
Filing Date: 2012-04-10
Classification: G11B

Abstract:
1. A thin-film magnetic head for reading data from a magnetic recording medium and/or writing data to a magnetic recording medium, comprising: at least one cavity for adjusting a negative pressure working between said thin-film magnetic head and said magnetic recording medium, provided in a surface of the thin-film magnetic head opposed to said magnetic recording medium, said at least one cavity having an opening positioned on said surface of the thin-film magnetic head, being aligned with and offset from the thin-film magnetic head in a direction in which the magnetic recording medium travels and being on a same side of the thin-film magnetic head with respect to an interface between the thin-film magnetic head and the magnetic recording medium, a volume of said at least one cavity being variable so as to adjust the negative pressure working between said thin-film magnetic head and said magnetic recording medium; and at least one volume-adjusting circuit that adjusts the volume of said at least one cavity.