Invention Grant
US07287704B2 Laser markable secure documents 有权
激光打标安全文件

  • Patent Title: Laser markable secure documents
  • Patent Title (中): 激光打标安全文件
  • Application No.: US11120760
    Application Date: 2005-05-03
  • Publication No.: US07287704B2
    Publication Date: 2007-10-30
  • Inventor: John H. Herslow
  • Applicant: John H. Herslow
  • Applicant Address: US NJ Mountainside
  • Assignee: Composecure, LLC
  • Current Assignee: Composecure, LLC
  • Current Assignee Address: US NJ Mountainside
  • Agent Henry I. Schanzer
  • Main IPC: G06K19/06
  • IPC: G06K19/06
Laser markable secure documents
Abstract:
Documents embodying the invention include a sandwich-like structure comprised of a core layer on which information may be printed using inks, a buffer layer bonded to each surface of the core layer for protecting the printed information and a laser reactive layer on, or in, which information can be written with a laser, bonded to each one of the buffer layers. The core layer may be formed of PVC (polyvinyl chloride) or PC (poly carbonate) material or any other suitable material on which information can be printed. The buffer layer may be formed of amorphous polyester material (e.g., PETG) or any other suitable material which can readily bond to the core layer and the laser reactive layer. The laser reactive layer may be polycarbonate (PC) or may be any other suitable plastic material (e.g., PVC, PET, PC, etc.) which includes a chemical which can react with a laser to produce desirable markings.
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