Magnetic recording medium, servo signal write head unit, and servo writer

A servo signal write head unit comprising:

• a DC erase head having DC erase gaps for magnetizing servo bands on a magnetic recording medium, so that a magnetizing direction of the servo bands is oriented in one direction, the DC erase head facing a surface of the magnetic recording medium;
• and
• a servo write head having servo write gaps for forming servo patterns on the servo bands by magnetizing the servo bands in a direction opposite to that of the servo bands, the servo write head facing the surface of the magnetic recording medium;
• each of the servo write gaps comprising a first servo write gap inclined at an angle from 8 to 20 degrees with respect to a width of the servo bands, and a second servo write gap non-parallel to the first servo write gap;
• wherein the first and second servo write gaps are formed in a straight line, and are symmetrical with each other around a line extending in a width direction of the servo band;
• and
• the first and second servo write gaps record a pattern which provides tracking control in a traverse direction of the magnetic recording medium for a servo read head.