Abstract: An audio device for motor vehicles includes a first battery which supplies power to an automobile, and a second battery arranged to be charged by the first battery when the output voltage of the second battery falls to a certain value. A switching arrangement operates to uncouple the second battery from the first battery, and to connect noise sensitive load circuits to the second battery, exclusively, when a cassette or cartridge is loaded into a cassette loading portion of the device. Accordingly, the noise sensitive load circuits are removed from the influence of electrical noise introduced on the power supply lead of the first battery through operation of the automobile.

Abstract: A transfer roller for electrophotographic apparatus for transferring a toner image formed on a latent image electric charge holding body to a record sheet by making the record sheet close contact with the latent image electric charge holding body, comprising an electrically conductive roller shaft connected to a transfer bias electric source and operative to apply a given transfer bias voltage between the roller shaft and the latent image electric charge holding body and an electrically conductive resilient member coated around the outer periphery of the electrically conductive roller shaft and having a resistance value which is increased in a continuous or stepwise manner toward the respective end faces at two end portions of the electrically conductive resilient member.

Abstract: Method for measuring agglutinating reaction by checking an agglutinates pattern caused by immunological agglutinating reaction while using a reaction vessel having at least one smooth recess formed on an inner sidewall surface thereof. After reaction liquid is placed therein, the reaction vessel is rotated about an axis thereof, so as to accelerate the agglutinating reaction by collecting corpuscles of the liquid in the recess. If the agglutinating reaction occurs, agglutinates released from the recess quickly sediment on the bottom of the reaction vessel to form an agglutinates pattern to be detected.

Abstract: In an electrophotographic developing unit including a magnet roll to apply developer consisting of electrically-insulated magnetic toner particles to a latent image to be developed and an electrifying device to electrify the magnetic toner particles in one polarity, the disclosed automatic controller has a detecting electrode disposed where the magnet roll forms ear-ups of the developer, the detecting electrode receiving a bias voltage of the opposite polarity to that of the electric charge on the magnetic toner particles, a photocell cooperating with a light source in detecting the amount of toner particles attracted by the detecting electrode so as to produce a signal representing the thus detected amount, and a control circuit to control the electrifying device in response to the signal from the photocell.

Abstract: A duplicating system comprises an electrophotographic copier which includes a first optical scanning system for making a slit exposure, a first document feeder for feeding a first document to be copied at a first speed with respect to the first optical scanning system, a rotating photosensitive drum for forming an electrostatic latent image corresponding to the image of document, apparatus for forming a duplicated copy with the aid of the latent image and a sequence control circuit for controlling a duplicating operation in such a manner that the image of first document is projected onto the photosensitive drum from an imaginary control start position.

Abstract: In a system for driving automatically an objective lens into a desired focal position so as to form a focussed image on a film plane, in order to derive a driving signal for a driving motor moving the objective lens along its optical axis, an auxiliary lens is arranged movably along its optical axis, a moving coil and a position detecting coil are wound around a lens holder, magnets cooperating with the coils are arranged around the coils, and an array of photoelectric converting elements is arranged to receive a light flux transmitted through the auxiliary lens. The auxiliary lens is vibrated about a reference position by supplying a sinusoidal signal to the moving coil. An output signal from the array of photoelectric converting elements is supplied to a focus detection circuit to generate sampling pulses at such timings that the photoelectric converting elements receive the best focussed image.

Abstract: A actuating apparatus for an electrophotographic device having a photosensitive drum mountable through an opening of a sidewall of the device, a detachable lid to close the opening, and a separator pawl adapted to separate a recording paper from tight contact with the drum. The actuating apparatus includes an actuator secured to the separator pawl so as to move the separator pawl between an operating position substantially in contact with the drum and a retarded position away from the drum, a bias device normally urging the separator pawl to the retarded position, and a stopper integrally secured to the lid in such a manner that when the lid is attached in position to the sidewall, the stopper automatically engages the actuator so as to keep the separator pawl at the operating position, whereas when the lid is detached from the sidewall, the stopper disengages from the actuator so as to automatically move the separator pawl to the retarded position for clearing the path of the drum.

Abstract: A tape cassette for use in a tape recorder having a head inserting window portion, a pair of hubs arranged in the cassette, a magnetic tape wound around these hubs, fed from one of these hubs and taken up to the other hub, turning rollers for guiding the tape along the window of the cassette, and a tape guide portion provided with a roller guide and a fixed guide adjacent to each other in front of the turning roller positioned on the side of feeding the tape so as to turn in the running direction of the tape as the tape is fed from the hub so as to be guided by the fixed guide through the roller guide.

Abstract: A bearing device of a capstan shaft for use in a tape recorder including a capstan shaft, a bearing member for supporting the capstan shaft, and a flywheel secured to the capstan shaft, a part of the secured portion being positioned in a tape cassette.

Abstract: In the disclosed recorder-player, an image signal is converted to multi-channel signals and a horizontal synchronizing signal is obtained therefrom by separating a synchronizing signal from the multi-channel signals to operate a flywheel oscillator, and by a loop in each channel in which a time base corrector in each channel operates a sync separator and in response to a coincident output from the sync separator in each channel and an output from the flywheel oscillator.

Abstract: In an electrophotographic apparatus where charges retained on a photosensitive member, which is generally, photoconductive member, are discharged and erased by illuminating the light emitted from an illuminating device on the photosensitive member. The unnecessary charges retained on the portion of the photosensitive member other than the region corresponding to the image receiving medium are removed or erased with the light illumination by controlling on and off switching of the illuminating device.

Abstract: The disclosed tape recorder serves for supplying a microphone output to a recording and reproducing head through an amplifier during recording by switching a recording and reproducing switch. A noise removing circuit at the output of said amplifier suppresses the output from the amplifier to the head a predetermined time during application of an electric power supply source of the amplifier.

Abstract: A magnetic reproducing apparatus for reproducing recorded contents of a magnetic tape with the use of a reproducing head comprises a magnetic tape, a magnetic reproducing head, a tape drive mechanism, means for detecting an interlude or a cease period of a reproduced sound from a non-recorded portion of the tape, and means for compulsively maintaining the detected interlude period for a predetermined time.

Abstract: An electrophotographic process comprising the steps of providing a composite photosensitive member consisting of a conductor, an intermediate layer of organic insulator, a photoconductive semiconductor layer as a charge generating layer formed on the conductor and a transparent photo semiconductor layer as a charge retentive and transporting layer; forming on the composite photosensitive member an electrostatic latent image corresponding to an image of a document to be copied; obtaining desired number of duplicated copies; uniformly charging the composite photosensitive member simultaneously with or before exposing ultraviolet rays on the composite photosensitive member to release charges trapped in the composite member.

Abstract: In the cassette disclosed, a cassette housing with magnetic tape has openings at the front surface thereof for receiving a magnetic head, a pinch roller and the like. A pair of tape pad springs for pressing against the head of the openings are integrally formed with the housing.

Abstract: A magnetic roll developing device comprising a magnet for forming a developing main magnetic pole and divided into a plurality of magnet portions so as to form spaces therebetween and spacer members fitted in said spaces and forming weak magnets, the plurality of magnet portions forming a plurality of independent brush fur-like portions of the developing agent.

Abstract: An automatic analyzing apparatus comprising a plurality of reagent vessels adapted to be inserted into a reagent vessel holder and a detector for photoelectrically discriminating the reagent vessel holder in response to an analysis item necessary for examining an organic ability and the reagent vessels corresponding to different analysis items.

Abstract: Biological substances such as tissues, cells, vaccines and viruses are cultured by the steps of: introducing a culture solution having the substances suspended therein into a closed culture vessel having a plurality of disc-like implantation plates arranged horizontally with a certain space between successive plates so that a predetermined number of the implantation plates is immersed in the culture solution; culturing the substances on the surface of the implantation plates; removing the substances from the implantation plates; suspending the removed cultured substances in a new culture solution; and successively repeating the steps of culturing, removing the cultured substances and suspending in a new culture solution while each time increasing the amount of newly supplied culture solution to progressively increase the number of implantation plates immersed in the culture solution.

Abstract: An automatic chemical analyzing apparatus comprising means for feeding successive reaction vessels along a circular reaction line, a sample delivery pump for delivering a given amount of sample liquids to be tested into the reaction vessels, a reagent delivery pump for delivering a given amount of reagent (corresponding to a particular test item to be measured) selected from a plurality of reagents, a first photometering means provided along the circular reaction line for monitoring the reaction condition of a test liquid in the reaction vessel on the reaction line, a second photometering means arranged in a precise photometering section positioned underneath the reaction line, means for transporting the reaction vessel from the reaction line into the precise photometering section after the test liquid in the relevant vessel has been monitored to reach a given reaction condition.

Abstract: An electrophotographic apparatus comprising a photosensitive drum applied with a main transfer bias voltage which is adjustable and a transfer roller applied with an auxiliary transfer bias voltage which is also adjustable.