Method of and apparatus for measuring attitude angles of a tongue with a fitting face involving a plurality of electrodes
AssigneeNHK Spring Co., Ltd.
InventorsAkio Mashima, Kenichiro Nakano, Shinichi Gotoh, Yasushi Nasuno
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Abstract
A method of measuring attitude angles of a tongue of a head suspension, the tongue including a fitting face on which a plurality of electrodes are arranged, emits a single collimated laser beam to an area of a fitting face containing at least two of electrodes, detects a reflected beam from the fitting face, extracts electrode reflective components corresponding to the electrodes from the reflected beam, and according to the electrode reflective components, measures the attitude angles of the tongue.
Claims8
A method of measuring static attitude angles of a tongue of a head suspension, the tongue having a fitting face to which a slider is attached, an insulating layer formed on the fitting face, and a plurality of electrodes arranged on the insulating layer and used for the slider, the method comprising steps of:
- emitting a single collimated beam to an area of the fitting face that contains at least two of the electrodes so that the area of the fitting face is once irradiated with the single collimated beam and said at least two of the electrodes are positioned in a range of a diameter of the single collimated beam at the time of said once irradiating;
- extracting electrode reflective components of the electrodes that have been positioned in the range of the diameter of the single collimated beam at the time of said once irradiating from a reflected beam of the single collimated beam reflected by the area of the fitting face;
- and
- measuring the static attitude angles of the tongue according to the electrode reflective components.
A method of measuring static attitude angles of a tongue of a head suspension, the tongue having a fitting face to which a slider is attached, an insulating layer formed on the fitting face, and a plurality of electrodes arranged on the insulating layer and used for the slider, the method comprising steps of:
- emitting a single collimated beam having a cross sectional area at least as large as an area of the fitting face occupied by at least two of the plurality of electrodes;
- irradiating said area of the fitting face with the emitted single collimated beam so as to commonly irradiate said at least two of the plurality of electrodes with the emitted single collimated beam;
- extracting electrode reflective components of the electrodes that have been positioned in the range of the diameter of the single collimated beam at the time of irradiation from a reflected beam of the single collimated beam reflected by the area of the fitting face;
- and
- measuring the static attitude angles of the tongue according to the electrode reflective components.
Dependencies are inferred from the claim text.