Patent ID: 6633457
Filing Date: 2003-10-14
Classification: G11B

Abstract:
An actuator assembly for positioning a plurality of read/write heads above an information storage media, comprising:a carriage arm assembly movably mounted on a pivot and having a voice coil mounted on one end and a plurality of read/write heads mounted on the other end; and a magnetic device having a plurality of poles adapted to generate a magnetic field; wherein the voice coil comprises one effective portion adapted to interact with the magnetic field and to generate one pair of driving forces in a direction substantially orthogonal to a moving direction of the read/write heads; wherein the magnetic device further comprises a first magnetic region and a second magnetic region being located across from the pivot, the second magnetic region having a polarity in a direction opposite to the first magnetic region, and the voice coil being positioned with the effective portion crossing through the first and second magnetic regions.