Patent ID: 7012775

Claim:
A writer for head positioning information, comprising: a head slider; a read head mounted on the head slider in a first zone extending straight from a leading end to a trailing end and reading head positioning signals out of a head positioning pattern over a recording medium; a write head mounted on the head slider in a second zone extending straight from the leading end to the trailing end in parallel with the first zone and writing the head positioning information into the recording medium, a distance between a centerline of the first zone and a boundary of the second zone corresponding to a track pitch of tracks defined over the recording medium; a spindle motor driving the recording medium for rotation around a rotation axis at a first rotation speed when the write head writes the head positioning information of a first track over a new recording medium, said spindle motor driving the recording medium for rotation around the rotation axis at a second rotation speed higher than the first rotation speed when the write head writes the head positioning information of a track other than the first track; and a positioning mechanism connected to the head slider, said positioning mechanism positioning the head slider at a predetermined position when the write head writes the head positioning information of the first track, said positioning mechanism positioning the head slider based on the head positioning signals read with the read head when the write head writes the head positioning information of the track other than the first track.