Sumitomo Electric Industries, Limited

Glory Ltd.

Sumitomo Electric Hardmetal Corp.

A.l.m.t. Corporation

Takeshi Sato

Hitoshi Sumiya

Katsuko Yamamoto

Kazuhiro Ikeda

Hiroshi Konishi

Keiko Arimoto

Shinichiro Yurugi

Tadashi Yamaguchi

Yutaka Kobayashi

Yuh Ishida

Naoki Ueyama

Naohiro Toda

Makoto Yukawa

Daiki Takehara

Fumiaki Shimaoka

Bunya Suemitsu

Takashi Inoue

Yuuichirou Okui

Yoshiki Yamaguchi

Kadotaro Nishimori

A light detection sensorcomprises a light sourcefor radiating light to a detection object T and a light receivercomprising a plurality of detectors for detecting intensity of light from the detection object T. The plurality of detectors comprises at least, a first detectorfor detecting intensity of light of a first wavelength band, and a second detectorfor detecting intensity of light of a second wavelength band different from the first wavelength band. Sensitivity of the first detectorto the light of the first wavelength band is lower than sensitivity of the second detectorto the light of the second wavelength band. A light receiving area of the first detectoris larger than a light receiving area of the second detector

Light detection sensor, light detection device, and paper sheets processing device

The optical sensor of the present disclosure includes: a light source configured to emit irradiation light to a target; a light receiver configured to receive a first incident light, a second incident light, and a third incident light travelling from the target and having different wavelength bands; and a controller configured to control the light source. The light receiver includes: a first light-receiving element configured to receive the first incident light and the second incident light and not to receive the third incident light; and a second light-receiving element configured to receive the third incident light and to receive neither the first incident light nor the second incident light.

Optical sensor and sheet recognition unit

A light detection sensor includes a light source that irradiates a detection target with light, a rod lens that collects emitted light from the detection target, a first light receiving element that detects the emitted light that has passed through the rod lens, and a second light receiving element that detects the emitted light that has passed through the rod lens, at a position different from a position at which the first light receiving element detects the light.

Light detection sensor, light detection device, sheet processing device, and light detection method

An aim is to reduce the size of an optical sensor which detects radiated light such as phosphorescence radiated from a detection target excited by exciting light, and to increase a radiated light receiving surface of the optical sensor. An optical sensor is configured to be provided with: a light source which irradiates excitation light; a light detector which detects radiation light emitted from a detection target excited by the excitation light; and a single light guide unit which guides the excitation light to the detection target and guides the radiation light to the light detector.

Optical sensor, light detection apparatus, sheet processing apparatus, light detection method, and phosphorescence detection apparatus

A wear-resistant tool includes composite polycrystalline diamond as a core, the composite polycrystalline diamond being composed of polycrystalline diamond in which particulate diamond is directly bonded and non diamond carbon. The polycrystalline diamond in the composite polycrystalline diamond is three-dimensionally continuous in composite polycrystal and primary particles have an average particle size from 10 to 500 nm.

Wear-resistant tool

A dresser includes: a mount component; and a cutting edge component inserted in the mount component at a base end portion side, wherein the portion of the cutting edge component inserted in the mount component has one or more portions in each of which an area of a cross section is increased from the front end portion side toward the base end portion side in the insertion direction, and a ratio L1/M1 of a length L1 and a maximum value M1 is more than or equal to 2.1, where L1 represents a length of the portion of the cutting edge component inserted in the mount component and M1 represents a maximum value of a diameter of a circle having an area equal to the area of the cross section of the portion of the cutting edge component inserted in the mount component.

Dresser

Nano polycrystalline diamond is composed of carbon, an element of different type which is an element other than carbon and is added to be dispersed in carbon at an atomic level, and an inevitable impurity. The polycrystalline diamond has a crystal grain size not greater than 500 nm. The polycrystalline diamond can be fabricated by subjecting graphite in which the element of different type which is an element other than carbon has been added to be dispersed in carbon at an atomic level to heat treatment within high-pressure press equipment.

Polycrystalline diamond and manufacturing method thereof, scribe tool, scribing wheel, dresser, rotating tool, orifice for water jet, wiredrawing die, cutting tool, and electron emission source

A composite polycrystal includes: a polycrystalline diamond phase including a plurality of diamond particles; and non-diamond phases composed of non-diamond carbon. The non-diamond phases are distributed in the polycrystalline diamond phase. An average value of projected area equivalent circle diameters of the non-diamond phases is not more than 1000 nm.

Composite polycrystal and method for manufacturing the same

Dresser component for grindstone

A composite polycrystal contains polycrystalline diamond formed of diamond grains that are directly bonded mutually, and compressed graphite dispersed in the polycrystalline diamond.

Composite polycrystal

A composite polycrystal contains polycrystalline diamond formed of diamond grains that are directly bonded mutually, and non-diamond carbon dispersed in the polycrystalline diamond, and has a concentration of contained hydrogen of greater than 1000 ppm and less than or equal to 20000 ppm.

A paper sheet authentication apparatus determines the type of the paper sheet by using a characteristic other than a fluorescent light characteristic, sequentially emits excitation lights of different wavelengths on the paper sheet, measures an intensity of light per wavelength within a predetermined range emitted by a fluorescent material applied to the paper sheet, and acquires fluorescent light characteristic data as the result. The paper sheet authentication apparatus performs the authentication of the paper sheet by using fluorescent light characteristic data of a genuine paper sheet previously stored per type of the paper sheet or a threshold calculated therefrom and the acquired fluorescent light characteristic data.

Paper sheet authentication apparatus

A composite polycrystal contains polycrystalline diamond formed of diamond grains that are directly bonded mutually, and non-diamond carbon dispersed in the polycrystalline diamond, and has a concentration of contained hydrogen of less than or equal to 1000 ppm.

Growing community of inventors

Itami, Japan

Takeshi Sato