Abstract: A stator of an A.C. electric motor includes a magnetic core comprising a magnetic ring member and two "U"-shaped magnetic members connected to the ring member. The two "U"-shaped magnetic members hold the ring member therebetween and are angularly spaced from one another around the central axis of the ring member. A primary winding is wound on one of the two "U"-shaped member and a secondary winding is wound on the other "U"-shaped member. The secondary winding is short-circuited by a capacitor. When A.C. voltage is applied to the primary winding, A.C. voltage is induced on the secondary winding at a certain value or more of the primary voltage. A rotary flux is formed in the ring member by magnetic fluxes induced by primary and secondary A.C. currents. Accordingly, a cage rotor or magnet rotor which is rotatably disposed in the ring member can be rotated.

Abstract: An image forming apparatus has an original feeder which is operable in a first mode in which a plurality of originals are fed to an exposure position one at a time and an exposure operation is carried out a preset number of times for each original and a second mode in which the plurality of originals are fed to the exposure position one at a time and one cycle of exposure operation is carried out for each original and the above operation is repeated by the preset number of times, a storage having a plurality of record sheet trays, and a control unit for controlling the storage such that the record sheets are distributed to the trays in the first mode and the record sheets are stored in one of the trays in the second mode.

Abstract: A sorter has trays or bins for storing sorted sheets, rollers for conveying the sheets received from a copying machine, a cam mechanism for moving the bins, and a controller including a microcomputer for properly controlling the sorting operation in different modes. With a minimum number of signals, the sorter can change the operation mode and can be turned off automatically if no sheet is received within a given time from reception of an ON signal.

Abstract: An image forming apparatus includes an image forming unit for forming an image on a recording medium, a command unit for commanding image forming conditions, a first switch for connecting a power source to the apparatus, a first detector for detecting an operational position of the first switch, a second switch for enabling the first switch to connect the power source to the apparatus, a second detector for detecting an operational position of the second switch, and a memory having microprograms stored therein for operatively controlling loads on the image forming unit. The operation of the image forming unit is controlled by signals derived from the first and second detectors and the microprograms. Information can be entered via a keyboard during waiting time.

Abstract: An improved method of manufacturing a semiconductor accelerometer having a cantilevered beam is shown. In the fabricating process a semiconductor substrate is divided into p-type regions and n-type regions. The substrate is immersed into an electrochemical solution with a cathode and a suitable voltage is applied. Certain portions of the substate are protected from the etching by the voltage such that the semiconductor substrate is etched to form the cantilevered beam.

Abstract: An automatic sheet feeder for feeding a sheet to a processing station to record the information on the sheet. Also, an image recording apparatus provided with such an automatic sheet feeder. The automatic sheet feeder includes a sheet stacking tray for supporting a stack of sheets, a feeder for feeding one by one the sheets out of the stack, a processing station for effecting a required processing to the surface of the sheet bearing the information to be recorded, which is being advanced by the feeder, and a conveyor for returning the sheet which has passed through the processing station to the stacking tray.

Abstract: A turn-off circuit for GTOs has a three-phase, full-wave rectifier. The output voltage of the three-phase, full-wave rectifier is applied as a turn-off power source to a charge/discharge capacitor.

Abstract: A semiconductor switching circuit using power MOS transistor as a switching element a drain thereof being connected to a DC power supply through a load and a source thereof being grounded. The power MOS transistor is protected from destruction due to an excessive power dissipation when the load is short-circuited.

Abstract: A video signal processing apparatus for encoding video into binary signals employs dither coding. The apparatus comprises a device for setting a plural number of divided areas of an original image and a processing circuit for processing video signals corresponding to the respective divided areas using different dither patterns.

Abstract: In image formation control apparatus having a process unit for forming an image on a recording medium and mechanisms for assisting in the image formation, there is provided a first controller for controlling the timing of the process unit. A second controller is provided for rendering at least a portion of the process unit inoperative when an image formation is not being executed, and for thereafter rendering at least one of the assisting mechanisms inoperative while continuing to apply power to the first controller to enable image formations to be resumed.

Abstract: A method of repairing shorts in parallel connected vertical semiconductor devices including a plurality of parallel-connected transistors comprises an anodizing step, before the electrodes are formed, in addition to the conventional manufacturing steps. Since defective semiconductor regions due to short circuit, poor withstand voltage or pin holes are insulated from the corresponding electrodes by an insulating material formed in the anodizing step, even if any of parallel-connected transistors are defective, the integrated circuit is usable, thus reducing the percentage of defectiveness of the vertical semiconductor devices in the assembly line production thereof.

Abstract: An image formation apparatus comprises copying process component for forming an image on a copy medium, component for presetting a number of times over which copying is repeated, wait component for inhibiting the starting of copying after closing of a main switch, component for instructing to start copying, sequence control component for starting the copying by the start component after the wait of the wait component has been released and for rendering the process component ready for the next cycle of copying after the repeated copying by the preset component has been terminated, component for warning of at least one of the trouble of the process component, the jam of the copy medium and the wait by the wait component in acoustic sound, and component for controlling the tone quality or sound volume of the warning component in accordance with the sequence of the sequence control component.

Abstract: An image forming apparatus includes an image forming unit for forming an image on a recording medium, a command unit for commanding image forming conditions, a first switch for connecting a power source to the apparatus, a first detector for detecting an operational position of the first switch, a second switch for enabling the first switch to connect the power source to the apparatus, a second detector for detecting an operational position of the second switch, and a memory having microprograms stored therein for operatively controlling loads on the image forming unit. The operation of the image forming unit is controlled by signals derived from the first and second detectors and the microprograms.

Abstract: An image forming apparatus includes an image forming unit for forming an image on a recording medium, a command unit for commanding image forming conditions, a first switch for connecting a power source to the apparatus, a first detector for detecting an operational position of the first switch, a second switch for enabling the first switch to connect the power source to the apparatus, a second detector for detecting an operational position of the second switch, and a memory having microprograms stored therein for operatively controlling loads on the image forming unit. The operation of the image forming unit is controlled by signals derived from the first and second detectors and the microprograms.