Abstract:
A magnetic recording apparatus is shown including a magnetic transducer that records an input signal upon a thin magnetic film of material having a high remanence which is rotatively mounted upon a drum or belt. The magnetic film contacts a magnetic recording paper which responds to the recorded input signal thereon for displaying that signal as a recording upon the surface of the paper. The film is then erased and made ready for subsequent contact with the magnetic transducer.
Abstract:
A recording medium is shown which is responsive to a magnetic or an electrostatic field for recording an input signal thereon having a continuous web of an encapsulating or entrapping material containing a suspension of highly reflective flakes. Exposure to a magnetic or an electrostatic field reorients the preoriented flakes to provide a contrast between the exposed portions of the recording medium and the unexposed portions thereof.
Abstract:
A recording medium is shown which is responsive to a magnetic or an electrostatic field for recording an input signal thereon. The recording medium includes a continuous web formed from a thermal sensitive material in which highly reflective flake-like particles are preoriented parallel to the plane thereof. These preoriented, reflective flake-like particles form a light background across the surface of the recording medium by reflecting ambient light therefrom. Exposure to a magnetic or an electrostatic field in response to an input signal reorients the reflective particles causing them to absorb ambient light for forming a recording trace thereon. Heat is utilized to permanently fix the recording trace upon the thermal sensitive recording medium.
Abstract:
A recorder includes a magnetic recording head with a plurality of projecting recording pins mounted in respective openings of a printed circuit board with printed circuit conductors on the board providing single-turn current carrying circuitry around each of the recording pins. A common reset and bias winding is wrapped around the projecting pins and is connected to a pair of edge connectors of the printed circuit board. The printed circuit conductors are connected in a coincident current matrix configuration with a recording pin at each matrix intersection to provide selection of the recording pins. A recorder uses the printing circuit board mounted adjacent to a recording medium responsive to the magnetic fields produced by selected ones of the recording pins.
Abstract:
A magnetic field producing structure has a pair of U-shaped elongated core members with the end faces of the legs of one of the core members arranged in a confronting relationship across a predetermined gap with the end faces of the legs of the other one of the core members. A first winding on each of the core members is wrapped around the trough of each of the core members. A source of alternating current is arranged to serially energize the first windings on both of the core members. A second winding is located on each of the core members and is wrapped around the corresponding core member at right angles to the first winding. A direct current source is arranged to serially energize the second windings on the core members.