Patent ID: 8194356

Claim:
A head-stack assembly, comprising: a magnetic-recording head; a lead-suspension supporting said magnetic-recording head on an actuator arm; a metal plate coupled with said actuator arm, a resin layer disposed on said metal plate; a flexible-printed-circuit board being disposed on said resin layer, and substantially perpendicularly connected to said lead-suspension; an arm-electronics module disposed on said flexible-printed-circuit board configured to shape a write-signal current waveform of a write signal to said magnetic-recording head; transmission lines disposed on said flexible-printed-circuit board configured to transmit said write signal to, and a read-back signal from, said lead-suspension; and a single intermediate conductor layer that is disposed between said resin layer and said flexible-printed-circuit board, and having a planar shape substantially facing a bottom of said arm-electronics module and a bottom of said transmission lines.