Krd Corporation

International Business Machines Corporation

Ntn Corporation

Hirohide Komatsu

Tsutomu Sawa

Hiroyuki Takenoshita

Toshiki Hada

Takashi Ito

Naota Yamamoto

Tsukasa Yamakawa

Kohei Shibata

A bearing assembly includes an IC tag with information to be reliably exchanged between the IC tag and an external reader/writer, and a rolling bearing including outer and inner races and rolling elements disposed between the outer and inner races. The IC tag communicates with the external reader/writer device without contacting the reader/writer device, is attached to a metal member of the rolling bearing, includes a tag antenna, and is configured so information can be exchanged between the tag antenna and a reader/writer antenna of the reader/writer device by forming a closed magnetic circuit between the tag antenna and the reader/writer antenna. The IC tag is received in a hole in a metal member surface. The tag antenna includes at least two protrusions facing the opening of the hole and arranged so magnetic fluxes leaving/entering the protrusions pass inside the edge defining the hole opening and extend outside the hole.

Bearing assembly including IC tag

The present invention provides IC tags which can not easily be broken nor give any hazard to human health, which enables minimization of aborted tags, shortening of time required for deletion of recorded data, minimization of sanitary and environmental problems, and reuse of tags to substantially reduce the cost for a management system. A metal antenna and an IC chip are coupled to and integrated with each other to form an IC chip-mounted body. Then, the IC chip-mounted body is covered with ceramic cladding members to form an IC tag. The metal antenna is formed by winding a metal wire into a coil form. A ceramic filler is used for coupling the ceramic cladding members to each other and also tightly securing the IC chip-mounted body to the ceramic cladding members.

IC tag

There is provided a paper feed roller capable of being used for delivering and feeding paper, which is high in coefficient of friction, has sufficient hardwearing properties with the coefficient of friction not affected by the change in environment of temperature and humidity, is low in ink transferability and is small in change in passage of year of the coefficient of friction of the surface. A coating layer 5 formed of an elastic material such as rubber is formed on an surface of a core material 4 molded of a foamed material such as sponge, and a bonding agent 6 having an elasticity such as denatured silicon is coated on the surface of the coating layer 5 so that ceramic particles 7 are fixed without clearance to provide a paper feed roller 1. Alternatively, the bonding agent 6 is directly coated on the surface of the core material 4 molded of a pliable material such as soft rubber and sponge so that the ceramic particles 7 are fixed without clearance to provide the paper feed roller 9.

Paper feed roller

A paper feed roller for delivering and feeding paper, which has a high coefficient of friction that is not affected by changes in temperature or humidity, good hardwearing properties, and is low in ink transferability. The paper feed roller includes a coating layer formed of an elastic material such as rubber which is formed on a surface of a core material molded of a foamed material such as sponge. A bonding agent having an elasticity such as denatured silicon is coated on the surface of the coating layer. Ceramic particles are embedded and fixed in the bonding agent In an alternative embodiment the bonding agent is directly coated on the surface of core material which is molded from a pliable material such as soft rubber and sponge.

A head wire for use in a high-speed impact dot matrix printer head, having an elongated body, made of a high speed steel wire material or titanium alloy wire material. One end of the body is connectable to an armature of the printed head and a second end on an ink ribbon for printing characters on a paper material. The second end has a coating formed around its periphery and consists of a ceramic hard titanium compound or an aluminum oxide.

Growing community of inventors

Machida, Japan

Hirohide Komatsu