Patent ID: 8102628

Claim:
A head assembly comprising: a head adapted to access a disk on which data is recorded; a wiring support member supporting the head; and a wiring structure portion including: a metal layer; a plurality of transmission lines extending, without intersecting with each other, above the metal later and connected to the head; and an insulating layer formed between the metal layer and the plurality of transmission lines; wherein the plurality of transmission lines include: a write line pair adapted to transmit a write signal; a read line pair adapted to transmit a read signal; and a third line pair adapted to transmit a signal different from the write signal and the read signal; and wherein the metal layer has: a first hole sequence overlapping the write line pair, spaced apart from the other transmission lines and arranged in a direction where the write line pair extends; and a second hole sequence spaced apart from the write line pair, overlapping a line pair different from the write line pair and arranged in a direction where the line pair different from the write line pair extends, wherein, in a particular portion of the metal layer having a curved shape, the first hole sequence and the second hole sequence are arranged in a curved line, wherein the first hole sequence is positioned on the outer side of the curved line, and wherein, in the particular portion of the metal layer, the size of the bore diameter of the first hole sequence is larger than the size of the bore diameter of the second hole sequence, wherein the second hole sequence is formed only in a region opposed to a hinge portion included on a suspension.