Patent ID: 6201667
Filing Date: 2001-03-13
Classification: G11B,H05K

Abstract:
A magnetic disk drive including a base and a magnetic head for writing/reading data with respect to a magnetic disk, comprising:an actuator arm rotatably mounted on said base, and having a distal end portion;a spring arm having a basal end portion secured to said distal end portion of said actuator arm, and a distal end supporting the magnetic head, and supporting a first conductor pattern having two ends, a first end connected to said magnetic head, and a second end having first terminals;a main flexible printed circuit sheet having a first end portion secured to said actuator arm, said main flexible printed circuit sheet having a second conductor pattern for carrying a signal to and from said magnetic head, said second conductor pattern having a first end having second terminals; anda relaying flexible printed circuit sheet attached to said actuator arm, said relaying flexible printed circuit sheet having a third conductor pattern and third and fourth terminals connected respectively to opposite ends of said third conductor pattern, said third and fourth terminal each including a protruding metal bump,said third and fourth terminals being connected respectively to said first and second terminals by soldering,wherein said relaying flexible printed circuit sheet includes an upper relaying flexible printed circuit sheet bonded upon an outer surface of a lower relaying flexible printed circuit sheet, andfurther wherein said upper relaying flexible printed circuit sheet includes said third conductor pattern and said lower relaying flexible printed circuit sheet includes an additional third conductor pattern, whereby said additional third conductor pattern carries signals to and from an additional magnetic head.