Two Overcoat Layers Patents (Class 428/841.1)
  • Publication number: 20100116891
    Abstract: To provide a card-like magnetic recording medium and a transferable laminate which can make a hologram distinctly recognizable and can prevent the occurrence of an ESD fault. In the card-like magnetic recording medium, on the magnetic recording layer 12 formed on the base material for a card 20, the transparent non-conductive deposited layer 14 and the transparent optical diffraction layer 15 are laminated in this order; between the magnetic recording layer 12 and the transparent non-conductive deposited layer 14, a reflective ink layer 13 which includes, at least, binder resin and metal flake, is formed; and a mass ratio of this binder resin/metal flake is set from 3 to 10.
    Type: Application
    Filed: March 25, 2008
    Publication date: May 13, 2010
    Applicant: DIC CORPORATION
    Inventors: Daisuke Yano, Yoshikazu Yamazaki
  • Patent number: 7037606
    Abstract: A security element is equipped with first code of magnetic material and/or second code of electroconductive material and has in addition third, optically read-able code, for example as negative writing and/or as a bar code, which is present in the magnetic and/or electroconductive code or is produced preferably together with third, neutral material, the neutral material not being either electroconductive or magnetic. According to the invention it is provided that all three aforementioned materials are indistinguishable to the viewer optically, that is, with the naked eye, and therefore appear as a uniform coating made of a single material.
    Type: Grant
    Filed: June 24, 2002
    Date of Patent: May 2, 2006
    Assignee: Giesecke & Devrient GmbH
    Inventor: Manfred Heim