Magnetographic Head Patents (Class 346/74.5)
  • Patent number: 7735950
    Abstract: A printing apparatus that conveys a printing medium placed on a surface of a conveyor belt, and performs printing to the printing medium by ejecting a liquid from a liquid ejection head, the apparatus includes: a magnetic recording layer that is formed to the conveyor belt as a continuous strip; a magnetic reproduction head that is disposed opposing the magnetic recording layer of the conveyor belt; and a control unit that detects recording details reproduced from the magnetic recording layer by the magnetic reproduction head.
    Type: Grant
    Filed: August 28, 2007
    Date of Patent: June 15, 2010
    Assignee: Seiko Epson Corporation
    Inventors: Kunio Tabata, Toshiyuki Suzuki, Atsushi Oshima
  • Patent number: 7691468
    Abstract: The invention discloses a device and a method for transferring a predeterminable, high-resolution magnetic design onto a document printed with a magnetic ink, in particular a magnetic optically variable ink. The device comprises a body of a composite permanent-magnetic material, having at least one flat or curved surface engraved with indicia corresponding to the design to be transferred, wherein the said magnetic material is permanently magnetized, preferably in a direction substantially perpendicular to the said surface. The method comprises imprinting or coating a first surface of a sheet or web with a magnetic ink or coating composition, and approaching the imprinted sheet or web to the engraved surface of a body of magnetized composite permanent-magnetic material while the ink is wet, followed by hardening the ink.
    Type: Grant
    Filed: June 29, 2004
    Date of Patent: April 6, 2010
    Assignee: SICPA Holding S.A.
    Inventors: Nathalie Benninger, Claude-Alain Despland, Pierre Degott, Edgar Müller
  • Publication number: 20080049054
    Abstract: A printing apparatus that conveys a printing medium placed on a surface of a conveyor belt, and performs printing to the printing medium by ejecting a liquid from a liquid ejection head, the apparatus includes: a magnetic recording layer that is formed to the conveyor belt as a continuous strip; a magnetic reproduction head that is disposed opposing the magnetic recording layer of the conveyor belt; and a control unit that detects recording details reproduced from the magnetic recording layer by the magnetic reproduction head.
    Type: Application
    Filed: August 28, 2007
    Publication date: February 28, 2008
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Kunio Tabata, Toshiyuki Suzuki, Atsushi Oshima