Kyoto University

Yokohama National University

National Institute of Technology

Konica Minolta, Inc.

Nsk Corporation

Panasonic Corporation

Bando Chemical Industries, Inc.

Kyodo Yushi Co., Ltd.

Nisshinbo Holdings Inc.

National University Corporation Yokohama National University

Ken Nakano

Yoshinobu Tsujii

Takaya Sato

Keita Sakakibara

Hitoshi Hattori

Taisuke Maruyama

Masayuki Maeda

Hiroyuki Arafune

Shinya Sasaki

Hiroshi Kimura

Hirofumi Miyata

Yoshiki Nakane

Junji Murauchi

Shinya Kondo

Hiroshi Watanabe

Makoto Hayama

Toshikazu Taura

Chiharu Tadokoro

Hidetoshi Hiraoka

Toshihiko Shiraishi

Shin Morishita

Takashi Morinaga

Hirokazu Matsukawa

Tetsuo Ogawa

Koji Maesaka

Takuo Nagamine

Saika Honma

Toshio Kamijo

Yoshihiko Shimizu

Tomoki Hachida

Hironori Yamaguchi

Mayu Miyazaki

Kazue Kurihara

A method for diagnosing a rolling device () including an outer member (), an inner member (), and rolling elements () includes: applying an AC voltage to an electric circuit including the outer member (), the rolling elements (), and the inner member (); measuring an impedance and a phase angle of the electric circuit when the AC voltage is applied; and measuring a dielectric constant of a lubricant at least one of between the outer member () and the rolling elements () and between the inner member () and the rolling elements () based on the measured impedance and the measured phase angle.

Method for diagnosing rolling device

Material and sliding system

A blade attachment tool includes a first support member supported by a pressing support portion supporting a blade formed of an elastic member configured to wipe/scrape liquid/solids spreading on an abutment surface by being pressed against the abutment surface and being long in one direction such that the blade is pressed against the abutment surface with a predetermined pressing force, a second support member supported to swing about a swing shaft extending in a longitudinal direction of the blade with respect to the first support member and configured such that a base end side of the blade is attached thereto, and an energizing member configured to apply a reaction force to a friction force that causes the second support member to swing about the swing shaft with respect to the first support member when the blade is pressed against the abutment surface to slide relatively to the abutment surface.

Blade attachment tool and blade support structure

An elastic member that comes into contact with a moving body that moves in a predetermined moving direction to scrape off a deposit on the moving body includes: a stress reducer that is provided at a contact end on a side to be in contact with the moving body and reduces vibration of internal stress generated due to contact between the moving body and the elastic member, wherein the stress reducer extends in a direction that is not perpendicular to the moving direction when the elastic member comes in contact with the moving body.

Elastic member, cleaning device, and image forming apparatus

A cleaning device includes a cleaner that cleans a body to be cleaned, wherein the cleaner includes: an elastic member in which a contact portion in contact with the body to be cleaned is formed in an uneven shape continuous in a predetermined direction; and a support member that supports the elastic member, and the cleaner is configured so that a contact pressure of the elastic member to the body to be cleaned is constant in the predetermined direction.

Cleaning device and image forming apparatus capable of suppressing unevenness in contact pressure of an elastic member

A composite including a plurality of block copolymer chains dispersed in a base polymer, the block copolymer chains including a polymer block (A) and a polymer block (B) having lower affinity for the base polymer than that of the polymer block (A), wherein each of the block copolymer chains has the polymer block (A) at two or more locations of the block copolymer chain, and in at least some of the block copolymer chains, the polymer blocks (A) are at least partially located in the base polymer and the polymer blocks (B) are at least partially exposed from the base polymer.

Composite and production method thereof

An electroacoustic transducer includes: a diaphragm; a magnetic circuit having a magnetic gap; a frame that holds the diaphragm and the magnetic circuit; a voice coil having one end portion positioned within the magnetic gap and the other end portion coupled to the diaphragm; and a low friction material that is disposed in a sliding portion formed by the voice coil and the magnetic circuit, and includes polymer compounds swollen with liquid.

Electroacoustic transducer

A clearance narrowing material containing a brush-shaped polymer chain aggregate formed of multiple polymer chains immobilized on a substrate. The invention provides a clearance narrowing material which can effectively prevent fluid leakage through a clearance and which does not disturb relative movement of members to form a clearance, and can realize an article in which fluid leakage through a clearance can be effectively prevented and the members to form a clearance can move smoothly.

Clearance narrowing material, clearance narrowing material composite, and article using same

Using an organic compound having a bottle brush structure, a material having softness and resilience and having excellent low-friction performance (SRT material) can be provided. Preferably, the SRT material contains a reinforcing filler, and may contain a lubricating liquid to be gelled.

SRT material, composite and method for producing the same

A method is for diagnosing a rolling device comprising an outer member, an inner member, and a rolling element. The method includes applying an alternating voltage to an electric circuit configured by the outer member, the rolling element and the inner member, measuring an impedance and a phase of the electric circuit when the alternating voltage is applied to the electric circuit, and calculating a lubrication film thickness and a metallic contact ratio between the outer member and the rolling element and/or between the inner member and the rolling element, based on a measured impedance and a measured phase.

The invention provides a magneto-rheological grease composition which contains (a) a base oil including at least 30% by mass of an ether type synthetic oil; (b) an aliphatic diurea thickener; and (c) magnetic particles in an amount of 45 to 95% by mass based on the total mass of the composition. The magneto-rheological grease composition can show superior thermal stability, dispersion stability and magneto-rheological properties.

Magneto-rheological grease composition

Growing community of inventors

Yokohama, Japan

Ken Nakano