Hitachi, Ltd.

Sato Holdings Kabushiki Kaisha

Kyocera Corporation

Adv Antest Corporation

Kabushiki Kaisha Sato

Kabushiki Kaisha Sato Chishiki Zaisan Kenkyusyo

Yasuhide Takeda

Hideo Kawamoto

Tadahiko Nogami

Goro Daimon

Kazuya Shindo

Hiroshi Maeda

Kouichi Sadou

Hiroyoshi Sadamura

Takeshi Takahashi

Tatsuya Yamada

Shinji Seto

Hiroyuki Nagai

Yoshinari Kogure

Tuneo Kishi

Daisuke Ebisawa

Masayuki Uchiyama

Toru Tsubaki

Hirohito Shimazaki

Atsuji Watanabe

Yoji Ogino

Thermal head for a printer

A printer includes a casing, a detachable unit provided to the casing, the detachable unit being configured to be detachable from the casing, an adjacent member provided adjacent to the detachable unit, and an engagement member attached to the adjacent member, the engagement member being configured to be changeable between an engagement position with which the adjacent member is engaged with the casing and a non-engagement position with which the adjacent member is removed from the casing. The engagement member engages the detachable unit to the casing together with the adjacent member, at the engagement position.

Printer

An electronic device test apparatus which can optimize throughput and costs is provided. An electronic device test apparatuscomprises: a test cell clusterhaving cell groupsA toH each of which has a plurality of test cells; and a conveyor apparatussupplying test carriers to a plurality of the test cells, and each of the test cellhas: contactors; a flow pathconnected to a vacuum pumpand reducing pressure in a recessof a pocketso as to bring external terminalsand the contactorsinto contact; and a test circuit for running a test on an electronic circuit formed into a die

Electronic device test apparatus

The electronic device mounting apparatuscomprises: a first camerafor imaging a flexible boardof a base memberof a test carrierto generate a first image information; an image processing apparatusfor detecting a position of an alignment markof the flexible boardfrom the first image information and calculating a print start positionof the first interconnect patternson the flexible boardon the basis of the position of the alignment mark; a printing headfor forming a first interconnect patternon the flexible boardfrom the print start position; and a second conveyor armfor mounting a dieon the flexible boardon which the first interconnect patternis formed.

Electronic device mounting apparatus and method of mounting electronic device

A thermal printer allows ink ribbon replacement without interference of a hook positioned in the opened state particularly in an ink ribbon replacement operation. A thermal printer includes a head lock leverwhich includes a hookat the tip of the lever. The hook is mounted such that it can be moved in the longitudinal direction relative to a turn shaftduring turning of the turn shaft, allowing the distance between the turn shaftand the hookto be changed. A movement control moves the head lock leversuch that the distance between the turn shaftand the hookin the opened state in which the thermal headis separated from the platen rolleris smaller than that in the pressed state in which the thermal headis pressed into contact with the platen roller

Thermal printer

In a hydraulic pressure actuating apparatus for a circuit breaker, contacts of the circuit breaker have a moving contact and a stationary contact for turning on/off current. A shaft, at an end portion of which is attached the moving contact, and at the other end of which is attached a piston, is received within a cylinder. A directional control valve exchanges oil pressure for actuating the piston. For changing over the directional control valve, pilot valves are provided. Each pilot valve has a pair of valve bodies, each opposing to each other, and springs. One of the valve bodies is able to stroke up to contact with the valve body of the other valve body, therefore giving no ill influences upon actuating time, even if drawback occurs in the pilot valves in the hydraulic pressure actuating apparatus for the circuit breaker.

Hydraulic pressure actuating apparatus for circuit breaker

For the purpose of providing a gas circuit breaker with a structure of hydraulic pressure operation system capable of detecting the occurrence of an incomplete closed state of the valves therein to prevent their erroneous motion during the subsequent motion, and a liquid-pressure driving system to be used therefor, a check valve is arranged so as to suppress the flow into the space on the side of the downstream of a closed-circuit operation spool valve, wherein the space on the side of the downstream of the closed-circuit operation spool valve is connected through a second diaphragm to a low-pressure oil tank and the operation time or operation number of a liquid-pressure pump is measured.

Gas circuit breaker and liquid pressure-driving system to be used

Occurrence of erroneous operation in which circuit closing operation unexpectedly happens after circuit opening operation even though an abnormality such that a circuit closing system is left in a circuit closing condition even after completion of the circuit closing operation. Accordingly, a circuit closing control valve has such an arrangement that its pilot chamber becomes a low pressure so that the circuit closing control valve is opened, and a lock valve having two pilot chambers connected to a circuit closing pilot valve and a circuit opening pilot valve, which are both become a low pressure, is located in a passage connecting between the pilot chamber of the circuit opening control valve and a return port. With this arrangement, if the above-mentioned abnormality occurs, the circuit closing condition is maintained unless a circuit opening instruction is delivered, and once the circuit opening operation is effected, the lock valve is opened so as to connect the pilot chamber of the circuit opening control valve to the lower pressure side so that the circuit opening control valve is left to be opened in order to disable the circuit closing operation, thereby it is possible to prevent occurrence of erroneous operation.

Hydraulic drive device for circuit breaker and circuit breaker using the

A three-phase combined type circuit breaker is disclosed which comprises a common housing, three-phase interrupting units in said common housing, movable contacts of the interrupting units connected through link mechanisms to operating devices for three phases respectively provided outside of the common housing, the switching operation thus being performed by phase. Rotary shafts are disposed in substantially the same plane in the link mechanisms. Each of the rotary shafts is provided with a connector for the movable contact, a connector for the operating device, and a sealing arrangement positioned between the two connectors for allowing the rotary shaft to rotate while holding the common housing in hermetic condition. This construction makes up a three-phase combined type circuit breaker capable of being operated by phase. The arrangement and construction of the three-phase rotary shafts simplifies maintenance and inspection of the interrupting units and the operating devices.

Three-phase combined type circuit breaker

Growing community of inventors

Tokyo, Japan

Yasuhide Takeda