Ricoh Company, Ltd.

Hitachi Global Storage Technologies Netherlands B.v.

Hgst Netherlands, B.v.

Masahiko Katoh

Masanori Horike

Nobuyuki Yanagawa

Masahiko Shakuto

Osamu Naruse

Tohru Nakano

Mitsuru Kitamura

Satoshi Kaneko

Akira Imai

Kazuo Sasaki

Mitsuo Suzuki

Yukio Itami

Masanori Saito

Akira Kojima

Hiroaki Uchiyama

Hideaki Kibune

Tetsuya Nakamura

Hitoshi Tamura

Takahiro Sakai

Masashi Murayama

Tetsuya Nakatsuka

Migifumi Ikeda

Shigeki Watabe

Yasushi Inoue

Masashi Okubo

A manufacturing method for a head-stack assembly. The method includes preparing a head-stack assembly. The method further includes placing a connection pad forming surface of a connector tab formed on an end of the trace so as to be positioned opposite to an edge of a circuit board; sliding an elastic component along a backside of the connection pad forming surface; and, stopping the elastic component on the backside and pressing the backside with the elastic component so as to press the connection pad forming surface against the edge. In addition, the method includes metal-joining the connector tab and a connection pad of the circuit board by applying heat to a connection pad of the connector tab and the connection pad on the circuit board while pressing the connection pad forming surface against the edge with the elastic component; and, removing the elastic component after the metal-joining.

Manufacturing method for a head-stack assembly, apparatus for interconnection of the head-stack assembly, and head-stack assembly

Embodiments of the invention relate to erasing data recorded on a magnetic disk with increased certainty by using an external magnetic field. One embodiment is directed to a method for erasing data recorded on a magnetic disk, which is housed in a magnetic disk drive, by using an external erasure magnetic field generated by an external erasure magnetic field generator. The method comprises the steps of: moving a first magnetic disk drive within an external erasure magnetic field in a moving state appropriate for the type of the first magnetic disk drive, and erasing data recorded on a magnetic disk in the first magnetic disk drive; and moving a second magnetic disk drive, which differs in type from the first magnetic disk drive, within an external erasure magnetic field in a moving state that differs from the moving state of the first magnetic disk drive, and erasing data recorded on a magnetic disk in the second magnetic disk drive.

Data erasure apparatus and data erasure method

Embodiments of the invention prevent a spindle motor from stopping rotation while data on a magnetic disk is being erased by using a permanent magnet. In one embodiment, data in the whole area of the magnetic disk is erased as a consequence of the magnetic disk rotating in the magnetic field of the permanent magnet located so as to face a part of the magnetic disk. A back yoke is located so as to face a base. The back yoke gives a magnetic force to the spindle motor in the opposite direction of the magnetic force of the erasing permanent magnet so that the fluid dynamic bearing spindle motor can retain the rotation as required without stopping rotation.

A cleaning unit for removing toner remaining on the surface of the image carrier of an image-forming apparatus is disclosed. The cleaning unit includes a vibration member, a blade member, and a driving part. The vibration member extends in the direction of the width of the image carrier, and has at least one vibration application part attached thereto. The blade member is attached to at least the end region of the vibration member, extending in the direction of the width of the image carrier. The driving part drives at least one vibration application part at a driving frequency that is a resonance frequency. The vibration member provides vibration to the blade member and a force to press the blade member against the image carrier.

Cleaning unit, process cartridge, and image-forming apparatus

A cleaning device includes a blade member having an end that touches an image carrier that caries a toner image made with toner, a vibratable member to which the blade member is fixed, and a vibrating unit that vibrates the vibratable member in such a manner that the end of the blade member does not curl.

Cleaning device and method, image forming apparatus, and process cartridge

An optical box for positioning and fixing respective optical components is provided and functions as a housing thereof. A support stand for positioning and mounting the respective optical components, respectively, is formed separately from the optical box, and is loaded in the optical box.

Optical scanning device and image forming apparatus

A high speed rotating apparatus including a shaft, a rotary body, and a motor. The rotary body driven by the motor has a hollow into which the shaft is inserted and forms a dynamic pressure air bearing between the rotary body and the shaft. The rotary body includes first and second rotary members. The first rotary member has an inner circumferential surface held for rotation by the dynamic pressure air bearing. The second rotary member has an inner circumferential surface fixed to the outer circumferential surface of the first rotary member through a hardening insertion process. The hardening insertion process is performed such that a tensile strength of the first rotary member is greater than an axial tensile stress to be produced in the inner circumferential surface of the first rotary member.

Method and apparatus for polygon mirror scanning capable of performing a stable high speed polygon mirror rotation

A developing apparatus for supplying toner includes a toner hopper configured to hold unused toner, a developing tub, and a toner hopper mounting part provided between the developing tub and the toner hopper. The toner hopper is adapted to be mounted to and removed from the toner hopper mounting part. The toner hopper mounting part includes a vibration apparatus for vibrating the toner hopper mounting part to loosen the unused toner stored in the toner hopper.

Image forming apparatus with a toner mounter having a vibration apparatus

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Kanagawa, Japan

Masahiko Katoh