Konica Corporation

Ichikawa Co., Ltd.

Konishiroku Photo Industry Co., Ltd.

Mitsubishi Denki Kabushiki Kaisha

Mitsubishi Chemical Industries Limited

Mitsubishi Heavy Industries Limited

Konishiroku Photo Ind. Co., Ltd.

Kazumasa Watanabe

Akihiko Itami

Akira Kinoshita

Ryuichiro Kobayashi

Naohiro Hirose

Shingo Fujimoto

Tatsuhiko Kobayashi

Toyoko Shibata

Jiro Takahashi

Masaru Kanbe

Morito Uemura

Tomoo Sakimura

Tomoko Sakimura

Kenji Yoshida

Satoru Ikeuchi

Noboru Mizukura

Yuzuru Sato

Norio Sakuma

Naoshi Kunieda

Shunji Suginaka

Yasuhiro Tsutsumi

Tadanori Oya

Susumu Takahashi

Hiroshi Yamazaki

Naoto Abe

Osamu Sasaki

Hirofumi Hayata

Kenichi Yasuda

Hiroyuki Oda

Tomomi Oshiba

Akira Ikeda

Nobuyuki Ito

Yoshihide Fujimaki

Shigeki Nakayama

Fumitaka Mochizuki

Tomoko Suzuki

Kiyoshi Sawada

Hajime Tadokoro

Hiroshi Iwata

Hideo Yoshizawa

Yohko Kitahara

Masahiro Fushimi

Takashi Ouchi

Kiyoshi Tamaki

Hidetaka Deguchi

Hirofumi Ishii

Hidemasa Iijima

Daisuke Goto

Kenji Ezaki

Hiroyuki Kakisako

Kazuyoshi Yabuuchi

Shin Kawashima

Shigeki Koumoto

Yoshitaka Kawaai

Minenari Imada

Naoyuki Harada

Takashi Iitsuka

Yasuko Taniguchi

Kouzou Maeta

Tomomi Zaitsu

Yoshinori Hattori

Yuanhu Pei

Tsuyoshi Shimoda

Hirokuni Ohno

A circuit breaker is comprised of a make-and-break mechanism part disposed between frame plates opposite to each other; a base in which a breaking portion including cross bar, moving contact, fixed contact and arc-extinguishing device, and an over-current trip device are contained; a middle base, in which a partition wall separating the breaking portion from the make-and-break mechanism part, and the breaking portion from the over-current trip device, is provided; and a cover for covering the base and middle base. A frame of the make-and-break mechanism part is secured to the base through the middle base, and the secured part of the frame and the inner bottom face of the base are disposed in the proximity.

Circuit breaker

The circuit breaker of this invention comprises a pair of stationary contactorswhich are respectively provided with stationary contacts, a movable contactorwhich includes a pair of movable contactsand which is capable of bridging both the stationary contactors, a switching mechanism sectionwhich operates when an overcurrent has flowed through the stationary contactors, a crossbarwhich separates the movable contactor from the stationary contactors upon the operation of the switching mechanism section, a contact pressure springwhich is engaged with the crossbar at one end and with substantially the central part of the movable contactor at the other end and which urges the movable contactor toward the stationary contactors, and arc extinction chamberswhich are respectively disposed near both the end parts of the movable contactor and which extinguish an arc struck at the separation of the movable contactor from the stationary contactors.

Papermaking felt containing a hydrophilic urethane resin that can maintain functions such as water drainage, wet-paper smoothness, and wet-paper transportability by imparting a hydrophilic property to the papermaking felt thereby preventing the deposition and accumulation of adhesive contaminants without impairing the compression recoverability of the felt thus sustaining its antifouling capability.

Papermaking needle felt

An endless papermaking press felt comprises a base and a batt layer intertwiningly integrated with the base. The batt layer comprises a wet paper web side layer and a machine side layer formed on an outer surface and inner surface of a base respectively, The base is manufactured from belt-shaped partial base bodies, which are connected to one another in side-by-side relationship. The press felt can be manufactured easily and at reduced cost.

Papermaking press felt

A press felt for use in a papermaking machine comprises a base body, a batt material and a hydrophilic nonwoven fabric, all intertwiningly integrated by needle punching. The batt material comprises a staple fiber, and is composed of a wet paper web side layer and a press side layer. The hydrophilic nonwoven fabric is provided in the wet paper web side layer. The hydrophilic character of the nonwoven fabric improves the movement of water to the nonwoven fabric, and the holding the water in the nonwoven fabric. As a result rewetting is prevented more effectively than in the case of prior press felts.

Papermaking press felt and press apparatus for a papermaking machine

A belt for a papermaking machine has minute projections and recesses randomly formed in a shoe-contacting surface of the belt by a powdery material contained in a high molecular weight elastic section formed on a base body. The surface roughness RZ of the shoe-contacting surface is between 50 and 500 microns; the particle diameter of the powdery material is between 5 and 500 microns; and the content of the powdery material in the high molecular weight elastic section is between 5 and 50 percent by weight. A lubricant is held in the minute projections and recesses, and consequently more lubricant may be supplied between the belt and the shoe with which it cooperates. As a result, friction between the belt and the shoe is reduced, and less energy is required to drive the papermaking machine.

Belt for a papermaking machine

In a shoe press apparatus of a papermaking machine, a press part comprises a roll which serves as a pressing member and a shoe. A belt is sandwiched between the roll and the shoe. A lubricant feeder supplies a lubricant from the outside of the shoe at the upstream side of the shoe. A lubricant holding section, comprising a plurality of grooves is provided on the upstream end of the shoe. Lubricant supplied from the lubricant feeder is held in the lubricant holding section of the shoe, and is more reliably supplied to the press part as the belt runs through the press part. The Structure of the lubricant holding section is comparatively simple, and the lubricant holding section decreases friction, thereby saving energy.

Shoe press apparatus of a papermaking machine

To address the conflict between structural strength and flexibility in a conventional elastic belt for a papermaking calender, and to reduce manufacturing time, a belt in which the paper sheet-facing side of a base body side is covered by a high molecular weight elastic layer, is characterized in that the high molecular weight elastic layer is composed of a dense, first high molecular weight elastic layer and a second, high molecular weight elastic layer having a multitude of small voids of almost the same size. Flexibility of the layer having small voids is achieved while the dense surface layer is adapted to the ruggedness of the paper sheet.

Elastic belt for papermaking calender

A relatively low-cost calendering belt having excellent heat resistance and durability comprises a central portion , and left and right side portions located at the sides of the central portion. The right and left portions comprise high molecular weight elastic material having greater heat resistance than that of the central portion . The central portion is composed of high-molecular elastic material, the durability of which is higher than that of the right and left portions . The heat of the calender roll CR is intercepted by a paper W, and consequently is not transmitted to the central portion of the calender belt. The right and left portions of the calender belt, which are not protected by paper W do not deteriorate readily as a result of the heat of the calender roll CR because of their heat resisting property.

Belt for calendering

In a shoe press belt, in which the nip zone is narrower than the shoe width, the shearing force which normally acts on the belt at the outer boundary of the nip zone is made either weak or non-existent by forming the outer portions of the belt of less hardness than the inner, or central, portion of the belt, so that the less hard portions can be positioned directly opposite the outer boundaries of the nip zone. Alternatively, the outer portions of the belt can be made thinner than the central portion of the belt and the thinner portions positioned directly opposite to the nip zone boundaries. The shearing force applied to the belt at the nip ends of the roll is reduced or eliminated, cracking resulting from the shear force is reduced or avoided, and a belt having improved durability results.

Shoe press belt

A papermaking press felt having excellent rewetting suppression without impaired water-squeezing capability, comprises a base body, batt layers, and a rewetting prevention layer, integrated with one another by needle punching. The rewetting prevention layer has three dimensional passages comprising a verge opening, a wet paper web side opening and a roll side opening. The wet paper web side opening is larger than the roll side opening. Under nip pressure, water from the wet paper web moves into the roll surface side of the felt, passing through the passages in the rewetting prevention layer. Although a rewetting phenomenon tends to occur when the press felt is released from the nip pressure, movement of water through the passages back to the wet paper web side of the felt is suppressed since the roll side openings are narrower than the wet paper web side opening.

To improve the water squeezing function of a shoe press belt for papermaking, the wet web side layer of a main body of the belt is composed of a high molecular weight elastic material, and the wet web facing surface of the wet web side layer is made hydrophobic. Water, squeezed from the wet web under compression in a shoe press, and transferred to the surface of the wet web side layer of the belt through a felt, may be shaken off reliably before the belt is again subjected to compression.

Shoe press belt and manufacturing method

A papermaking felt which offers excellent elasticity over a long duration comprises a base body ( ) and batt layers ( ), and a film layer ( ) with elongate ridges ( ) having their orientation in the CMD direction. The film is arranged in the base body, in the batt layers, or between the layers. The papermaking felt is capable of running flexibly and smoothly in a winding path of a papermaking machine, and is highly resistant to flattening through fatigue, even if subjected to repeated compression under the nip pressure.

Papermaking felt

Electrophotographic photoreceptor

An electrophotographic photoreceptor is disclosed. The photoreceptor comprises pigment particles obtained by incorporating one or more metal atom into polycyclic anhydride-aromatic diamine condensation compound particles.

Growing community of inventors

Hino, Japan

Kazumasa Watanabe