Abstract: A waveguide-microstrip line coverter to be used in combination with a waveguide, for mode conversion in transmitting a signal from the waveguide to a microstrip line. A probe for receiving a signal transmitted through the waveguide is formed by forming a conductive layer over the inner surface of a hole formed in a cuboidal dielectric body and is connected directly to the microstrip line to avoid needless induction of inductance. Since the hole can be formed accurately in size and position in the cuboidal dielectric body and the probe is formed in the hole, the probe is formed accurately in size and position and is highly resistant to vibration.

Abstract: An output stage control circuit comprises an output driving means connected to a load for driving the same, a control means for taking out detection signals corresponding to signals flowing to the load and supplying analog control signals to the output driving means and a reference signal supply means for supplying reference signals to the control means, in which the analog control signals are generated depending on the detection signals and the reference signal, and the load is driven in an analogous manner by the output driving means depending on the analog control signals. The output stage control circuit can continuously supply the current to the load thereby operating the load stably with less occurrence of noises and stably for a long period of time.

Abstract: A printer comprises a paper feed roller, an intermediate gear coupled with the paper feed roller and having a spur gear section on an outer circumferential surface thereof, and a paper feed cam having an axis extending perpendicularly to an axis of the intermediate gear and having on its outer circumferential surface a helical tooth for meshing engagement with the spur gear section of the intermediate gear. The paper feed roller is angularly movable for a predetermined angular interval through the intermediate gear in response to angular movement of the paper feed cam. The paper feed cam has in the outer circumferential surface thereof a gap for disengagement with the intermediate gear. The helical tooth has an inclined end edge for guiding meshing engagement with the intermediate gear.

Abstract: A coordinate input device is disclosed according to the invention, there is provided a plurality of conductors embedded in parallel on an input plane, scanning signals are supplied sequentially in such a manner of applying concurrently signals of the same phase to at least two of the conductors, then with special attention to the scanning position discriminated where the polarity of a scanning signal detected with a coordinate indicator is discriminated to have inverted, the levels of the signals before and after the inversion of their polarity are detected so as to determine where the coordinate indicator is positioned between the conductors.

Abstract: A thermal head having a glass glaze layer, a heat generating resistance layer, an electric power supplying conductor layer and a protecting layer formed on an insulating substrate, wherein the glass glaze layer is so formed that the lower portion thereof is embedded in the insulating substrate and the upper portion thereof is protruded from the surface of the insulating substrate, and a metal layer is disposed in contact with the lower surface of the glass glaze layer.The heat generating portion can effectively be protruded to render the contact with the recording paper or ink ribbon favorable, thereby improving the heat efficiency. Further, temperature falling rate once after the temperature of the heat generating portion has been raised can be increased.

Abstract: An information recording and reproducing apparatus of the hard disk type comprises a motor for rotatably driving hard disks secured to a driving hub attached to the driving shaft thereof, a pivot assembly having a pivot shaft supporting a swing arm for swing motion thereon, magnetic heads attached to the free end of the swing arm so as to be located opposite to the surfaces of the hard disks, respectively. The lower bearing among the bearings rotatably supporting the driving shaft of the motor and the lower bearing among the bearings rotatably supporting the pivot shaft of the pivot assembly are always urged in the same direction by bearing biasing means, respectively.

Abstract: A liquid crystal device comprising a liquid crystal cell in which a ferroelectric liquid crystal are put between two sheets transparent substrates each formed with a transparent electrode to the inside thereof with the peripheral edges of the transparent substrates being sealed, a polymer film having a birefringent property appended on one side of the liquid crystal cell and two polarizing plates disposed on both sides of the liquid crystal cell and such that the polarizing directions thereof are in perpendicular to or in parallel with each other. Coloring for the transmission light is suppressed, by which the display quality can be improved.

Abstract: A device for preventing a motor from being locked comprises a position indicator for indicating a position to be moved in response to rotation of the motor, a position detector for detecting the position being moved in response to rotation of the motor, a servo control unit for supplying a current to the motor so that an output signal from the position detector will be equalized with an indication by the position indicator, a stop detector for detecting stoppage of the motor in response to a differential of the output signal from the position detector, and a cutoff control unit for cutting off the current supplied from the servo control unit to the motor in response to an output signal from the stop detector.

Abstract: A tuner in which a band switching signal corresponding to a channel selected from a plurality of UHF and VHF bands is generated to enable the formation of a suitable resonant circuit for receiving television signals of the selected channel. It includes a varactor diode, a plurality of resonant coils and distribution constant lines which are each grounded at one end. Each of the coils and the line is provided for forming a resonant circuit for tuning one of the bands. A plurality of switching diodes are provided for connecting the other ends of the coils and the line selectively to the other end of the varactor diode. The tuner further includes a device for turning on and off the switching diodes selectively in response to the band switching signal.

Abstract: A magnetic head having an upper head and a lower head disposed opposite to each other and capable of simultaneously reading information from or writing information in both sides of a magnetic disc inserted therein. The upper head is fixed to a wingable arm at correct vertical position and inclination, while the lower head is mounted through a gimbals spring on a carriage which is slidable along a guide rod or guide rods in the radial direction of the magnetic disc. Since the upper head is positioned correctly and the surface thereof facing the lower head serves as a datum surface, the inclination of the lower head need not be adjusted in assembling the magnetic head, and thereby the process for assembling the magnetic head is remarkably simplified.

Abstract: A method of fabricating a print head for use in a thermal printer is similar to the additive (or lift-off) method of pattern transfer utilizing semiconductor fabrication technology except that a metal film is used instead of photoresist conventionally used. The method is initiated by glazing a substrate. Then, nickel is sputtered on the glazed substrate. That portion of the formed nickel film that lies under the heater portion of the head is removed by photoetching. Subsequently, the remaining nickel film is plated with nickel, and a chemically stable and heat-resistant insulator, such as Ta.sub.2 O.sub.5, is sputtered on the plated laminate. Thereafter, the plating layer and the nickel film are removed to leave the portion of the insulator layer that lies under the heater portion. The remaining layer protrudes to the heater portion.

Abstract: A recording and reproducing apparatus using a disk cartridge includes a cartridge holder in which the cartridge is received, a pivotable shutter, and a receiving portion mounted to the front end of the holder and coming into engagement with the shutter. The body of the apparatus is provided with an opening to allow insertion of the cartridge into the apparatus. The shutter is always biased in such a direction as to cover the opening, and is centrally provided with an extension which comes into engagement with the receiving portion, so that the holder is not operatively connected with the apparatus until the shutter is opened.

Abstract: Herein disclosed is a detent mechanism for a detent mechanism for use in a sliding electric part, in which an operation lever exposed to the outside from a casing is slid for operations, such as a slide switch or a volume control for audios. In the detent mechanism, a slide guide formed in a casing is formed with a series of cam crests. There is fixed to an operation lever an engaging member which engages with those cam crests. At least one of the slide guide and the engaging member is given such an elasticity as to tighten the engagement.

Abstract: A coordinate input device is provided of the type comprising main loops made of conductors embedded parallelly in an input plane, a compensating loop disposed in the vicinity of the common wire of the main loops, switching elements for successively sending out a scanning signal to the individual main loops, a switching element for sending out a current to the compensating loop, a current drive circuit pertinent to the main loops, and a current drive circuit pertinent to the compensating loop, wherein a position is obtained on the basis of signals detected by a coordinate designating means capable of pointing out any spot on the input plane, which is characterized in that the output side of the main loops is connected with the input side of the compensating loop, whereby the total consumption power is not increased even by addition of the compensating loop.

Abstract: Disclosed is a transparent electrode sheet and method of producing therefor, in which a transparent electrode is formed on a transparent plastic film and a protection coating is further formed on the transparent electrode.

Abstract: A thermal head having a heat-generating resistor layer, a power feeding conductor layer, and a protective layer superposed on an electrically insulating layer, acquires improved quality by forming the heat-generating resistor layer with an alloy consisting of tantalum, a high-melting metal, and nitrogen. The thermal head of improved quality is produced by spattering a composite target consisting of tantalum and the high-melting metal in a mixed gas consisting of nitrogen and argon.The high-melting metal is at least one member selected from the group consisting of titanium, zirconium, hafnium, vanadium, niobium, chromium, molybdenum, and tungsten.

Abstract: A head height adjustment construction in a magnetic recording and reproducing apparatus with a rotary cylinder for use in a VTR, for example, includes a lower fixed drum, an upper rotary drum axially spaced from and rotatable with respect to the lower fixed drum, the upper rotary drum having a tapered surface slanted upwardly in a radially outward direction thereof, a head attachment plate having one end mounted on the upper rotary drum and supporting a head on an opposite end thereof, and an adjustment screw threaded in the upper rotary drum and held against the head attachment plate. When the height of the head is to be adjusted, the adjustment screw is turned about its own axis for spacing the opposite end of the head attachment plate away from the tapered surface. After the head height has been adjusted, a surface of the head which is held in sliding contact with a magnetic tape is directed upwardly toward a plane in which the upper rotary drum is rotatable.

Abstract: An apparatus for controlling the output power of a transmitter that is installed in a vehicle or used in a mobile radio communication equipment has a power amplifier, a coupler for delivering an output corresponding to the output power from the power amplifier, a detector disposed after the coupler, a comparator for delivering an output proportional to the difference between the output voltage from the demodulator and a reference voltage, and a voltage control circuit for controlling the output power of the power amplifier in response to the output from the comparator. An RF variable attenuator is disposed before the comparator to compress the dynamic range of the signal applied to the voltage control circuit.

Abstract: A power window device has an arrangement to automatically invert the movement direction of a windowpane when an upward movement of the windowpane is prevented in the automatic drive mode by some reason before it reaches its proper upper limit, and also has an arrangement activated to invalidate the automatic inverting function of the arrangement for a predetermined time.

Abstract: A printing mechanism comprising a rotary shaft, a first type ring mounted on the rotary shaft and provided on the circumference thereof with first typefaces, a first selection ratchet wheeljoined to the first type ring and provided on the circumference thereof with first teeth formed so as to correspond to the first typefaces, respectively, a second type ring mounted on the rotary shaft beside the first type ring and provided on the circumference thereof with second typefaces, a second selection ratchet wheel joined to the second type ring and provided on the circumference thereof with second teeth formed so as to correspond to the second typefaces, respectively, first and second pawls capable of being engaged with and disengaged from the first and second selection ratchet wheels, respectively, by means of an electromagnetic mechanism including a solenoid, a cylindrical yoke, a rotary member fixed to a rotary shaft and the first and second pawls, and clicks capable of transmitting the rotative force of the fo