Abstract: A tape drive control apparatus and method for a magnetic tape recording and reproducing system are provided to prevent a failure of the read and write operations due to frequent start and stop actions of the magnetic tape. The magnetic tape has a certain resonance frequency between a read/write magnetic head and a tape guide of the system. When the rate of start and stop actions of the tape approaches the resonance frequency adverse vibration of the tape becomes large in magnitude. To prevent such tape vibration delay a delay circuit is provided to delay the start of the magnetic tape for the subsequent data block when the length of the preceding data block is within a predetermined range.

Abstract: An instantaneous detonator has a detonator casing containing a primary charge and a secondary charge with fuze wires extending from outside the casing to an electrically actuated ignitor system located in the casing. An insert member is positioned in the detonator casing. This member has a continuous axial bore extending therethrough and includes a cross-sectional constriction. The bore is formed on one side of the constriction as a charge chamber that contains the primary charge and that faces the secondary charge and is formed, on the other side of the constriction, as a charge-free vacant chamber that faces the ignitor system. The insert member has a thick-wall section at least in that portion laterally surrounding the charge chamber, and the constriction has a configuration for preventing ignition of the primary charge by pressure forces exerted by air in the detonator casing compressed by detonation of an explosive acting on the exterior of the detonator casing.

Abstract: A method of manufacturing a target of an image pickup tube comprising the steps of: forming a plurality of groups of transparent conductive signal electrodes on a transparent insulating base plate; forming a first layer on at least a portion constituting an image area of the image pickup tube, said first layer being substantially insoluble in etching liquid used for etching an insulating layer to constitute an intermediate layer insulator in a double layered interconnection structure; forming, after formation of said first layer, an insulating layer to constitute said intermediate-layer insulator; removing a predetermined portion of said insulating layer, removing said first layer together with said insulating layer located thereon; forming bus bars; and forming a photoconductive layer on said plurality of groups of the transparent conductive signal electrodes.This invention provides an excellent method for mass production.

Abstract: An invention concerning the electrode structure of a gas laser device is disclosed. In the outer peripheral part of a discharge gas circulating hole (32) provided in the central part of an upper gas stream side one (16) of electrodes (14) and (16) disposed at both the ends of a discharge tube (8), a plurality of gas circulating apertures (34) are further provided over the entire periphery. A glow discharge portion in the discharge tube (8) is fined towards the central part of the tube by a gas which passes through the outer-peripheral gas circulating apertures (34). Thus, the laser intensity profile becomes the Gaussian distribution, and the laser generation efficiency is enhanced.

Abstract: Ventilated cigarettes are made by perforating the wrapper of each filter over an area which lies within pre-formed perforations in the uniting band joining the filter to the tobacco rod. The filter wrappers may be perforated by pins on a rolling plate and fluted drum between which filter portions cut from longer filter rods are rolled to stagger the portions so that they can then be pushed into a single row.

Abstract: A process for joining a plug and fuze wires for an electrical detonator having a casing and a plug of resinous material arranged therein through which plug extend at least two fuze wires connectable at their ends within the casing to an igniter system, the process involves twisting the at least two fuze wires together to form a twisted zone at least at the ends of the wires to be received within the plug and forming the plug of resinous material around the twisted zone.

Abstract: A developer quality monitoring device for monitoring the mixed state of toners and carriers in the developer used for developing a latent image formed on a recording medium, wherein a developer circulating mechanism and a toner density detector are used in common, an electrical signal representative of a decrement of toner density and a magnitude of pulsations is produced, and by using this electrical signal, decay condition of the developer is monitored and decay condition limit is discriminated.

Abstract: An automatic alignment system for use in a digital modem, having a performance indicator circuit associated therewith, adjusts the control voltages applied to selected alignment points therein in order to minimize the error indication output of the performance indicator circuit. The alignment system interfaces with a microprocessor and provides the necessary timing mechanism to generate write pulses which control the operation of respective processing circuits associated with the various alignment points in the modem analog unit. Each of the processing circuits in the modem analog unit includes a digital-to-analog converter, a data latch, and an amplifier which processes the output of the microprocessor interface to generate an analog control voltage.

Abstract: A commutator apparatus for rotary electric machines comprises a plurality of commutator segments mounted side by side on a rotary shaft through an insulating ring along the periphery thereof, an armature winding wound on a rotor core and including a plurality of coil ends projected axially from the rotor core, and a plurality of risers made of a conductor, one end of each thereof being connected to one axial end of the corresponding commutator segments, the other end of the riser being securely connected to one end of the corresponding armature coil. Each pair of adjacent risers are bound by an insulating binder to reduce the space therebetween, thus forming a substantially delta-shaped space defined by the adjacent risers on each side of said binder. The vibrations of the risers are thus absorbed and the vibratory stress of the risers is reduced, thus improving the mechanical strength and reliability of the commutator apparatus.

Abstract: An automatic numerically controlled slotting or notching press arrangement which includes a multi-armed feed and removing device having a turnstile or turntable which is selectively indexed or rotated so as to convey blanks to various processing stations. The feeding and removing device is adapted to transfer the blanks from at least one stack unloading station to a centering or aligning station, a locating or turning station, a processing station, a stator stacking station, and a rotor stacking station. A numerically controlled indexing unit (a clamping table for blanks to be processed) and a numerically controlled tool changing is provided. The stack unloading station and the rotor stacking station form the first and last processing stations and are linked by a conveying device which operates independently of the turnstile or turntable of the feeding and removing device.

Abstract: A constant pressure type ebullient cooling equipment has a liquid receiver at a position higher than a condenser. The liquid receiver is connected with a vaporizer containing a liquid refrigerant by a coupling pipe. A valve and a device for opening or shutting the valve are disposed at an upper part of the liquid receiver. When refrigerant vapor produced in the vaporizer is introduced into the condenser, refrigerant liquid in the vaporizer moves to the liquid receiver. The condenser and the liquid receiver are connected by a deaerating pipe. Non-condensable gases such as air contained in the cooling equipment and the refrigerant enter the liquid receiver, and are emitted through the valve. As a result, the interior of the cooling equipment is held under a substantially constant pressure.

Abstract: A DC power transmission control system for a DC line inserted between a pair of converters comprises a transformer provided on the AC side of each of the converters for maintaining constant the no-load voltage on the converter side by tap position control. One of the converters is operated as an inverter for control of the DC voltage. The control angle of the converter operated as the inverter is controlled by a signal associated with, e.g., a DC current as a load. The DC terminal voltages of the converters are made variable, thus reducing the amount of increase in the reactive power of the rectifier under a small load condition.

Abstract: A photoconductive target having an electrode and a P-type conductive layer mainly made of Se and making rectifying contact at an interface with the electrode, with at least Te being doped in a portion of the P-type conductive layer. At least one metal fluoride forming shallow levels is doped in the region where the signal current is generated for the most part of the P-type conductive layer with an average concentration of not less than 50 ppm and not more than 5% by weight. The metal fluoride is preferably at least one selected from the group consisting of LiF, NaF, MgF.sub.2, CaF.sub.2, BaF.sub.2, AlF.sub.3, CrF.sub.3, MnF.sub.2, CoF.sub.2, PbF.sub.2, CeF.sub.3 and TlF. The high light sticking of the photoconductive target can thus be considerably reduced.

Abstract: A fluorescence spectrophotometer comprising a light source, an excitation side monochromator which makes light from the light source be subjected to spectroscopic analysis for illuminating as actinic light a sample, a fluoroscence side monochromator which makes fluorescence light from the sample be subjected to spectroscopic analysis, a detector which detects light from the fluorescence side monochromator, and a scanning means which adjusts both the monochromators to the wavelengths of the actinic light and the fluorescence light to be scanned. These monochromators are arranged in such a way that one of them is automatically set to the location of the peak wavelength value which is detected by itself through a simple and automatic wavelength scanning operation and then the other is wavelength-scanned for excitation spectrum or fluorescence spectrum measurement.

Abstract: A heating power plant and a process for operating the power plant with the power plant containing a thermal power installation for producing mechanical motive energy for driving an energy supply device as well as waste heat which may be utlized for heating purposes in the power plant. The thermal power installation may be shut down or operated at slight partial loads during periods of low energy needs with hydrogen being introduced into a metal hydride storage device which is capable of absorbing hydrogen. At times of higher energy need the thermal power installation is kept in operation under greater load conditions and hydrogen is removed from a metal hydride storage device which is capable of releasing such hydrogen. The release enthalpy required for releasing the hydrogen is provided by waste heat from the thermal power installation or by ambient air.

Abstract: A coil form for accommodating at least one coil winding and a heat switch. The coil form includes a recess for receiving the heat switch and the heat switch includes at least one switching element and a housing, at least a portion of which is adapted to be inserted into the recess. The housing is open at least in an area thereof adapted to be inserted into the recess and a portion of the housing serves for closing off the recess. The heat switch includes a base body and fixed connection elements on the base body which are insulated from each other. The heat switch includes a contact actuatable by a bimetallic switching member and a stationary counter contact with the contact and counter contacts being connected so as to be electrically conductive with the respective fixed connection elements at a predetermined temperature such that they are either electrically connected with each other by the bimetallic member or separated from each other.

Abstract: In automated systems such as press lines or related systems, a control circuit is typically designed to be intrinsically safe in acting on actuators which trigger movements of the presses. The actuators and/or the power amplifiers preceding them are connected to a load voltage supply circuit. In order to prevent unplanned movements during setting-up operations, when the safety circuits are partially disabled, which movements could be caused by a failure (e.g. fusing of a semiconductor component), the actuators and/or the power amplifiers preceding them are driven by the control circuit and are connected to the load voltage supply circuit by means of control keys, which trigger planned movements, via at least one zero-voltage-protected switching element.

Abstract: A digital watch of the dynamic logic type having a time base circuit consists of a counter receiving as a clock signal a timing signal having a period shorter than that of a time base signal of the system, a decoder for decoding a content of the counter, and a latch circuit for latching the content of the counter. The time base signal of the system is produced from the decoder of the time base circuit, while an operation of correcting a measured time stored in a random access memory is executed on the basis for the content of the counter.

Abstract: An electric control apparatus of an induction motor is provided with a flux current controller for controlling the flux current of the motor and a secondary current controller for controlling the secondary current of the motor. A pulse generator circuit is disposed to control the amplitude, frequency and phase angle of the primary current of the motor according to output signals of the flux current controller and secondary current controller. The primary voltage and frequency to be applied to the motor are controlled by pulse signals from the pulse generator circuit. This pulse generator circuit includes a primary voltage setting zone for setting the primary voltage of the induction motor and a primary voltage detecting zone for detecting the primary voltage of the motor.