Abstract: Recording medium is disposed in a recording region defined between a pair of electrodes impressed with a signal voltage. Electroconductive toner is supplied between one surface of the recording medium and one of the electrodes and electroconductive material in the form of a powder or liquid is supplied between the other surface of the recording medium and the other electrode. By selectively applying the signal voltage the toner, recording medium and the electroconductive material are charged to selectively deposit the toner and the electroconductive material on the surfaces of the recording medium thus forming a toner image. After removing surplus toner, the toner image is fixed to obtain a permanent record.

Abstract: In an apparatus in which video signals recorded in successive parallel tracks extending obliquely across a magnetic tape are reproduced by means of at least one rotary magnetic head which scans the tracks in succession at a rate dependent on the speed at which the tape is moved longitudinally by a tape transport assembly; a track searching arrangement is provided that includes a selector actuable for selecting a track searching mode of the apparatus, a manually rotatable wheel or dial, and a control circuit for initially establishing transport of the tape in the forward direction at a normal speed upon actuation of the selector, and for thereafter varying the speed and direction of transport of the tape from the initial speed and direction in accordance with the direction and angular extent of any rotation of the wheel from the position of the latter at the time of selection of the track searching mode.

Abstract: An improved recorder for recording substantially simultaneously across the width of a relatively wide sheet of electrosensitive material has a fixed head made up of a laminar stack of recording styli or, as referred to herein, recording pins. Adjacent pins are offset from one another a distance sufficient to allow the passage of a purging fluid therethrough. The purging fluid conveniently may be supplied from a source of low pressure air.

Abstract: A cassette tape recorder includes operating buttons for controlling the functions of the tape recorder, a cassette ejection button for exposing a cassette accommodating section having a cover, and an arresting member interlocked with the operating buttons and ejection buttons. The arresting member selectively hinders the operation of the ejection button when any of the operating buttons is pushed to put the tape recorder in a tape running mode and the operation of the operating buttons when the cassette accommodating section is exposed, thereby providing a foolproof mechanism for the cassette tape recorder.

Abstract: A method for marking a recording surface includes providing a premagnetized magnetic donor layer having magnetically held on its surface magnetically attractable marking particles. The magnetic attraction between the marking particles and the donor layer is changed in selected areas of the donor layer so that the particles held in the selected areas are attracted to the recording surface by a magnetic field.

Abstract: Apparatus for the recording, reproducing and automatic translation of the type utilizing rectangular magnetic cards with lines of writing on their fronts and magnetic tracks on their backs explored alternatively from left to right and from right to left by a movable magnetic head, said apparatus being characterized by the fact that each line of writing on the front corresponds to two recording tracks on the back, that each upper track of a line is traversed in the direction opposite to that of the upper track of the preceding line, that each lower line is traversed in a direction opposite to the direction of travel along the upper track of the corresponding line, the apparatus being so arranged as to permit a choice between four different patterns of travel.

Abstract: An electrostatic printing device comprising a rotatable printing roller with stylus electrodes. In order to keep the distance of the images or of the recorded sheets small and the images themselves clear and pure, notably at the edges, the stylus electrodes are moved transversely of the longitudinal direction of the tape-like record carrier. The foil tape is at the same time continuously transported. Thus, the translatory movement of the printing roller supporting the stylus electrodes is eliminated.

Abstract: An electrostatic transfer process and apparatus for transferring an image comprised of letters, symbols and patterns onto a sheet of plain recording paper from an electrostatic latent image forming material comprised of a conductive substrate and an insulating layer formed on the substrate. The insulating layer surface of the electrostatic latent image forming material is uniformly charged with electrostatic charges. The charges of only image forming areas of the insulating layer surface are subsequently erased so that an electrostatic latent image is formed in the image forming areas. Thereafter, the electrostatic latent image forming material moves past a developing electrode to which is applied a voltage of the same polarity as that of the charges applied to the insulating layer of the electrostatic latent image forming material.

Abstract: This disclosure is concerned with adapting helical electrode-grounding electrode signal recording apparatus, normally suitable for wet paper signal recording, alternatively to operate with dry coated recording paper of the type previously recordable upon by point stylii and the like, through a combination of novel signal feeding circuits, electrode shaping, paper orientation and electrode pressure.

Abstract: In a method for magnetically recording a vehicle condition, a voltage proportional to a vehicle speed is sampled at a predetermined interval and converted into a code signal which is temporarily memorized by a memory. When the memorized data reach a predetermined amount, the data are transferred to be recorded by a magnetic tape for a period which is short enough not to prevent the memory from memorizing. When all the data have been recorded, a completion signal is generated to stop the tape, whereby the inter record gap is limited to minimum length.

Abstract: A holographic recording is made on a tone wheel which is arranged to be driven by a capstan motor and capstan assembly. The holographic recording is a series of radial holograms on the tone wheel which recording is matched to the mechanical system driving the tone wheel by incorporating mechanical drive errors in the holographic recordings.

Abstract: A system for limiting the speed of a gasoline engine includes a circuit responsive to the engine speed which provides control signals to a solenoid valve which in turn controls a vacuum actuator. The vacuum actuator then overrides a manual throttle control to move the throttle toward closed position when a governed engine speed is approached. A control circuit provides a signal having four components; one proportional to engine speed, second and third proportional to engine acceleration and a fourth which is the integrated difference between the engine speed and a preset governed speed. In addition a speed switch actuated when an overspeed condition occurs is effective to inhibit the third component and to increase the fourth component to its maximum value to effect maximum governing action and system stability. The control signal controls a duty cycle oscillator which actuates the solenoid valve.

Abstract: Magnetographic printing apparatus having scan magnetization of the recording surface. A bubble plate is provided adjacent the recording surface upon which bubble magnetic domains are propagated in a direction perpendicular to the direction of movement of the recording medium. A row of electromagnetic recording heads on the opposite side of the recording medium from the bubble plate are energized to produce a magnetic field which, when added to the magnetic field of the bubbles, is sufficiently high to cause magnetization of selected portions of the recording medium. In a second embodiment, a belt having magnetically permeable vanes mounted thereon is positioned on the side of the recording medium opposite the electromagnets. The vanes concentrate the magnetic field from the electromagnets to a sufficiently high value to magnetize the recording medium.

Abstract: A linking mechanism for a magnetic tape device includes a slide plate moved in association with the operation of a fast tape wind mechanism or re-wind mechanism and a tape eject stop lever which is rotated by the slide plate to such a position as to prohibit a tape eject button from actuating a tape eject mechanism.

Abstract: A cassette for a facsimile recorder comprises a plastic housing for a roll of recording web with opposed lips forming an exit path for the web. At least one lip has two parallel ribs pressed in the sheet material extending across the web path so as to stiffen the lip and urge it against the opposite lip and the web in between.

Abstract: A variable speed, fixed wavelength magnetic imaging system is provided by generating a signal having a frequency proportional to the speed of a rotational recording member and using that signal to provide a recording frequency of fixed wavelength.

Abstract: A tape recorder comprises an operating device including a tape feed switching member which is provided with an abutment surface adapted for engagement with a playback actuating member to prevent the switching member from being locked in a review position when the playback actuating member is in its playback position, brake means including a braking member responsive to each of a record actuating member, a rapid tape advance actuating member or a tape rewind actuating member for applying a braking action upon a tape supply shaft, and an ejector including a cover opening and cassette ejecting member which is responsive to an operation of a magnetic head carrying member for performing the opening of a cover of a tape cassette receiving chamber and the ejection of a tape cassette therefrom in two steps. The provision of the operating device in the manner mentioned above prevents the tape feed switching member from being locked in a review position when a review operation is desired during a playback operation.

Abstract: In a facsimile recorder receiving a cassette holding a supply of recording paper and having a linear recording electrode, the recorder has a frame detachably receiving the cassette. A scanning electrode on the frame cooperates with the linear electrode on the cassette to mark the recording paper with electrical signals applied to the electrodes as the paper is drawn from the cassette. A cover hinged to the frame carries a resilient member engaging the cassette to urge the linear electrode toward the path of the recording paper and scanning electrode thereby insuring good recording contact with the paper.

Abstract: A printing apparatus for multiple signal printout has separate multiplexers for analog and pulse channels. The multiplexed analog signal is digitized, formatted, and applied via a selector to an adder, alternatively and selectively, the pulses are applied as digital signals to the adder. The adder receives zero offset numbers which differ for the different channels and the resultant numbers are applied to a one-out-of-n decoder driving printing electrodes. The system is under control of a cyclically addressed ROM whose outputs controls the multiplexing and furnishes the offset numbers. A clock sequencer times each acquisition frame.

Abstract: In a recording and/or reproducing apparatus, for example, for use with tape cassettes, and which is of the type that requires both a record push-button and a forward push-button to be in their active positions for establishing the recording mode of operation, whereas the reproducing or playback mode of operation is established when only the forward push-button is in its active position; there are provided a first interlocking mechanism operative to prevent actuation of the record push-button to its active position after the forward push-button has been actuated to its active position so as to normally inhibit change-over of the apparatus directly from its reproducing mode of operation to its recording mode of operation, and a second interlocking mechanism operative in response to establishing of the recording mode of operation to disable the first interlocking mechanism and thereafter permit actuation of the record push-button to its active position with the forward push-button already in its active position