Abstract: A motor is disclosed comprising a motor case and a rotating shaft for the motor having a portion within the motor case and a portion extending outside of the motor case. A feed screw is formed on the extending portion of the rotating shaft. The feed screw threadedly engages with a moving body which moves back and forth along an axial direction of the rotating shaft. The feed screw has a threaded portion, a top portion of this threaded portion being provided with a concavity to store lubricating oil.

Abstract: Apparatus, methods, and systems are described for lifting a read/write head in a digital tape system. Headlift systems according to the present invention include a guide pin that is an element of a stepper motor, a bracket coupled with the head, and a shaft-linking element. Such headlift systems provide reduced headlift error tolerances, and can therefore accurately place the head for reading and writing to smaller width data tracks on the tape. The bracket is configured to mate with the guide pin and to couple with a stepper motor rotational shaft. A motor according to the present invention includes a stepping motor, a shaft, and a guide pin. A bracket according to the invention includes a head mating surface, an arm, and typically includes a guide pin bushing. The arm includes a first opening aligned to receive the shaft, and a second opening aligned to receive the guide pin.

Abstract: A disk apparatus includes a head carriage having a read/write head which reads information from or writes information to a disk, the head carriage provided to support the head thereon such that the head can be positioned to the disk in a radial direction of the disk together with the head carriage.

Abstract: There is described a read/write device which enables realization of miniaturization, a reduction in weight, improvement in the accuracy of step feed, and reliability. The read/write device includes heads, a carriage, a stepper motor for moving the carriage stepwise, and a medium drive motor for spinning a recording medium. The stepper motor further includes a rotor, a first stator which is formed from multilayer magnetic material and is fixedly positioned so as to surround the rotor, a second stator formed in substantially the same way as the first stator, and a holder for housing the first and second stators.