Kabushiki Kaisha Toshiba

Ricoh Company, Ltd.

Molex Corporation

Toshiba Kikai Kabushiki Kaisha

Kouichi Asakura

Toyoo Okamoto

Makoto Sagara

Hidehiro Ii

Junichi Miwa

Tsunehiro Takahashi

Hiroyuki Sekine

Disclosed is an electrical connector for a flexible flat cable comprising a connector housing having a plurality of terminals arranged therein and a connector cover removably mounted on the connector housing. The connector cover has a pressure blade which displaces each terminal thereby resiliently holding flat conductors on the cable between a contact portion of each terminal and the blade as well as electrically connecting the flat conductors and the contact portions of the terminal. The flexible flat cable is provided with a lock hole between the flat conductors thereon and a lock plate having a projection in a free end thereof mounted between the terminals. In addition, a support blade is mounted under the pressure blade of the connector cover. When the flexible flat cable is inserted and the connector cover is pushed into the connector housing, the lock hole of the cable becomes engaged with the projection of the lock plate.

Electrical connector for flexible flat cable

When a positive gate trigger signal is applied to a gate terminal of a gate-controlled bidirectional semiconductor switching device, a first auxiliary thyristor, made up of an n-type 7th layer, a p-type 4th layer, an n-type first layer, and a p-type 8th layer, is turned on, and a resultant on-current of the thyristor is fed as a gate current, through a second wiring, to a first main thyristor made up of an n-type 5th layer, a p-type second layer, an n-type first layer, and a p-type 8th layer, turning on the first main thyristor. When a negative gate trigger signal is applied to the gate terminal, a second auxiliary thyristor, made up of an n-type 6th layer, a p-type third layer, an n-type first layer, and a p-type 8th layer, is turned on. In this case, however, a rectifier prevents an on-current of the second auxiliary thyristor from flowing to the gate terminal through the 4th layer, and, as a result, the on-current is fed, without leakage, as a gate current to the first main thyristor. Accordingly, the reactive current components in the second auxiliary thyristor are reduced, and the first main thyristor is turned on.

Gate-controlled bidirectional semiconductor switching device with

In a reciprocating scan system, movement is stopped for a predetermined length of time between a scan stroke and a return stroke to prevent erroneous imaging of a photoconductive drum (12) which would result in unnecessary loading of a cleaning unit (26) and formation of a partial reversed image in addition to a desired image on a copy sheet (23). Control circuitry (61) may be provided to cause the stopping operation only when the magnification is less than unity or when the length of the copy sheet (23) in the scan direction is longer than the corresponding image length.

Electrostatic copying apparatus

A cylindrical blank is mounted on the turn table of a vertical lathe with the axis of the former as close as possible to the axis of the latter. The angle between a reference point on the periphery of the blank and a measuring point circumferentially displaced from the reference point and the deviation of the periphery at the measuring point from a circle about the axis of the turn table are measured. Then an axis at which the dispersion of the deviation at the measuring point is a minimum is calculated by using the measured angles and the deviations to determine the distance between the axis of the blank and the axis of the turn table, and press members mounted on the turn table are actuated to move the blank by the distance thus determined to coincide the axis of the blank with the axis of the turn table.

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Tokyo, Japan

Kouichi Asakura