公开(公告)号：US20160019922A1

公开(公告)日：2016-01-21

申请号：US14335984

申请日：2014-07-21

Applicant: TDK CORPORATION

Inventor： Norikazu OTA ,  Osamu NAKADA ,  Mitsuo OTSUKI ,  Shinji HARA ,  Daisuke MIYAUCHI ,  Tetsuya ROPPONGI ,  Koji SHIMAZAWA

IPC: G11B5/60

CPC classification number: G11B5/607 ,  G11B5/6011 ,  G11B5/6029 ,  G11B5/6052 ,  G11B5/6076 ,  G11B5/6088 ,  G11B2005/0021

Abstract: While a plurality of drive currents for flying height setting with current values smaller than a tentative optimum drive current are supplied to a light source, respectively, heater power is supplied to a heater part, and touch down of a thermally-assisted magnetic recording head is detected. Tentative optimum heater power is determined based on a correlation between the heater power when the touch down is detected and each drive current for flying height setting. The tentative optimum drive current is supplied to the light source part; the tentative optimum heater power is supplied to the heater part; a reference signal is recorded in a magnetic recording medium; and flying height of the thermally-assisted magnetic recording head is set by determining whether or not the reference signal is recorded with the desired signal intensity.

Abstract translation: 虽然分别将用于飞行高度设定的多个驱动电流设置为具有小于暂定最佳驱动电流的电流值，但是分别将加热器电力提供给加热器部分，并且热辅助磁记录头的向下触摸 检测到。 基于检测到触摸时的加热器功率与用于飞行高度设置的每个驱动电流之间的相关性来确定暂定最佳加热器功率。 暂定最佳驱动电流被提供给光源部分; 将暂定的最佳加热器功率提供给加热器部件; 参考信号被记录在磁记录介质中; 并且通过确定参考信号是否以期望的信号强度被记录来设定热辅助磁记录头的飞行高度。