Abstract: The printer records images in the form of dots on electrical discharge-sensitive paper which has a conductive coating on one surface. A plurality of styli are mounted on a rotor. The paper is fed continuously through a curved guide in a direction perpendicular to the plane of rotation of the rotor. This divisional patent is directed to the feature whereby current is supplied to the styli from a power supply through the conductive coating on the paper. The return path to the power supply is made by means of a simple brush consisting of a curved, helical spring. The spring makes good electrical contact and also serves to help shape the paper into an arc before it passes over the rotor.

Abstract: An electronic ignition timing control system comprises a plurality of double ignition coils each being connected to the spark plugs of each set of two cylinders in a multi-cylinder engine. In addition to a large number of teeth on the periphery of the engine ring gear, there is provided a reference tooth at a predetermined angular crankshaft position for a selected set of the cylinders. The reference angular positions for the other sets of the cylinders are calculated arithmetically. A circuit including read-only-memories determines a desired ignition angle in accordance with engine operating parameters to produce a binary code signal consisting of higher order bits and lower order bits. A first comparator starts to count the number of teeth on the ring gear at the time of the detection of a reference angular position to roughly determine the ignition timing, the first comparator producing an output signal when the count value thereof reaches that of the higher bits.

Abstract: Apparatus for printing images on paper or other print medium by transferring toner on a magnetic tape onto the paper, using a voltage pulse applied between electrodes located respectively behind the tape and behind the paper. The electrode behind the tape is narrower than the tape, so that the opposite edge portions of the tape serve as insulators that prevent the formation of electric arcs between the electrodes. The voltage is applied in the form of a high voltage pulse on the order of 1500 volts lasting on the order of one millisecond, to transfer toner, and is followed by a sustained voltage on the order of 150 volts for preventing the toner particles from shifting position on the paper.

Abstract: Video signal processing circuitry for compensating a video signal having different average levels in alternate horizontal line intervals, such as in odd and even line intervals during a field or frame interval. A first average detector is operable during alternate ones of the line intervals, for example, during odd line intervals, for detecting the average level of the video signal in such alternate line intervals. A second average detector is operable during the remaining ones of the line intervals, for example, during the even line intervals, for detecting the average level of the video signal in such remaining line intervals. A compensating circuit is responsive to the difference between the detected average levels of the video signal in the alternate and remaining line intervals, respectively, for producing compensating signals. These compensating signals are combined with the video signal so as to minimize the difference between the average level of the video signal in successive line intervals.

Abstract: A machine operative to sequentially pull jacketed flexible magnetic disks (which may be termed "diskettes") into a data transferring position in the machine directly from a carriage or from a magazine carried by the carriage and to return the diskette back into the carriage or magazine. The jackets of the diskettes are square; and the carriage and the magazine are provided with flat sided, flat bottomed store grooves for holding such diskettes. The machine is likewise provided with a diskette receptor groove having flat sides and a flat bottom and holding a diskette in its data transferring position in the machine.

Abstract: Ignition timing control for an internal combustion engine is achieved by sensing engine rotation so as to generate output pulses for predetermined degrees of rotation and to develop a reset pulse at a rotational reference position. A first digital signal representing rotational speed of the engine and a second digital signal representing engine intake vacuum are converted into output date representative of optimum retard angles from the reference position. The output date are added to generate a plural bit binary signal having higher and lower significant bits. Comparison means, responsive to the reset pulse, counts the output pulses representing degrees of engine rotation and generates an output signal when the count reaches the value of the higher significant bits.

Abstract: A tape cleaner for mounting on a magnetic tape recorder between take-up reels on the recorder includes opposed cleaning elements for receiving a stretch of tape therebetween and wiping the tape on both sides thereof as the tape is drawn therethrough. A mounting is also provided for mounting the cleaning elements on the recorder which permits the cleaning elements to reorient both rectilinearly and rotationally in response to a change in tape position relative to the mounting.

Abstract: An electrostatic recording multi-stylus electrode device is capable of reducing significantly the electrostatic capacity between the connecting wires and between the lead wires of the multiple stylus electrodes of the electrode device by providing a plurality of insulating base plates, for supporting the wires, for each row of the multiple stylus electrodes so as to dispose the wires sufficiently apart from each other.

Abstract: A recording device for use in electrostatic reproduction of an image on a recording medium includes a support, two carrier plates juxtaposed relative to each other on the support, covers for the carrier plates, a row of electrodes near one side of each carrier plate, supply leads for the electrodes near each carrier plate on its other side, a plurality of counter electrodes spaced apart from the electrodes, and an insulating layer between the carrier plates. The electrodes and counter electrodes define a gap adapted for the passage of the recording medium.

Abstract: Disclosed is a method and apparatus for carrying out Magnetography utilizing the relationship between half-tones of a picture and the spatial recording density on a magnetic recording material. The picture signal is converted into an electrical signal, whose frequency corresponds to the half-tones of the picture and results in the variation of the spatial recording density so that the naturalness of the half-tones of the picture is successfully preserved.

Abstract: A container for receiving a cassette of a cassette tape player houses a movable plate which is adapted to be moved, compressing a spring, by the cassette as the latter is inserted. A container driving plate is provided for moving the container to the playing position by the force of a spring. A locking plate is so associated with the movable plate and the container driving plate that one of these plates is locked by the locking plate by the operation of the other, while the other is released from the locking plate. A slide plate is adapted to be held by a solenoid through a retaining member when the solenoid is energized. However, the slide plate is released as the solenoid is deenergized, so as to urge the movable plate, thereby to make the latter eject the cassette from the container. Thus, the slide plate corresponds to the eject lever in the conventional cassette loading and unloading device.

Abstract: A magnetic recording and playback apparatus adapted to decrease tape hiss noises, wherein an amplifier power supply circuit or an output circuit for coupling an output from a recording amplifier to a magnetic head is provided with a capacitor block whose internal loss decreases as frequency increases and consisting of a plurality of capacitors. The capacitor block is formed by connecting with an electrolytic capacitor of a large capacitance included in the power supply circuit or output circuit at least one nonpolarized capacitor having a smaller capacitance and smaller internal loss than the electrolytic capacitor.

Abstract: A recording device for recording on electro-sensitive paper, comprising a recording head with a row of recording electrodes which consist of taut wires which freely extend through the air between grooves in a unitary support. The paper is passed between the recording electrodes and a straight backing member which is arranged opposite the centers thereof.

Abstract: Disclosed is a method wherein, in order to prevent background stains in the conventional NRZ system latent image recording method for Magnetography, the latent image recording is effected in such a manner that, in response to a black color representation signal, the direction of the magnetizing field along a generated magnetizing track is periodically reversed, while in response to a white color representation signal, a saturation magnetizing field of a uniform predetermined polarity is applied to adjacent tracks lying in a white region of the signal.

Abstract: A tape cassette-ejecting device comprises an eject lever pivotably supported by a magnetic head-supporting plate and an eject control button selectively rotate the eject lever. When the eject control button is depressed, the eject control lever is rotated to push up a tape cassette when a magnetic head is apart from a magnetic tape, while it is not rotated when the magnetic head is contacted with the tape.

Abstract: A device for holding a rotatable record disc includes a support base rotatable about a central axis and having a supporting surface normal to the axis for supporting one side of a record disc and a projecting boss engaging the central hole of the disc for aligning the disc with respect to the axis, and a clamp assembly having a clamp housing, adapted to be disposed at the other side of the record disc, and provided with locking elements for locking the clamp housing with respect to the base against movement away from the latter. The locking elements are radially, slidably mounted in the clamp housing and have locking claws extending from their inner ends for engaging respective locking recesses in the rotatable base. The locking elements have portions exposed at diametrically opposed sides of the clamp housing for allowing manual urging thereof to provide simultaneous release of the locking claws and removal of the clamp assembly from the support base.

Abstract: Generation of charged particles by extracting them from a high density source provided by an electrical gas breakdown in an electrical field between two conducting electrodes separated by a solid insulator, subject to the influence of a third electrode. The ions are generated by a high frequency alternating potential between a "driver" electrode and a "control" electrode. The ions are employed in charging a dielectric member to form a latent electrostatic charge image. A "screen" electrode between the control electrode and dielectric member isolates the potential on the dielectric member from the ion generating means, and provides an electrostatic lensing action.

Abstract: An electrolytic facsimile recorder with a scanning helix cooperating with a blade electrode in a recording zone to mark a recording web drawn through the zone comprises a housing with a base and a cover. The base has a web support wall approaching the recording zone, and the cover has a compartment for receiving a roll of the moist, electrolytic web, the compartment overlying the web support wall on the base so to locate the moist web roll close to the recording zone.

Abstract: A cassette tape recorder that incorporates an opening and closing device for a cassette holder or the like. The opening and closing device comprises a rotating member which is rotated in accordance with opening and closing operations of the cassette holder so as to lock the holder in its closed state and to give a damping effect on the opening movement of the holder. The force for opening the cassette holder as well as the force for holding the same in the closed state is provided by the actuating force of a single actuator.

Abstract: The device comprises multiple stylus electrodes embedded in a row in an electrode support member, a plurality of common connecting conductive members which are arranged at substantially the same distance from the row of multiple stylus electrodes, parallel to each other with substantially the same distance therebetween, and which are disposed on a curved insulating base plate so that the lead wires for connecting the multiple stylus electrodes to the common connecting conductive members are substantially the same in length. The lead wires are arranged so as to be spaced from each other as far as possible for making uniform the distribution of the capacity of the capacitors formed between the respective lead wires and for reducing the absolute value of the capacity of the capacitors.