Basic Research on Coloring Materials for an Invisible Bar Code [2]

5 References
  • YAMAMIYA Shirou
    Graduate School of Science and Technology, Niigata University
  • MAKINO Hideo
    Department of Information Engineering, Faculty of Engineering, Niigata University
  • HIRONO Mikihiko
    Department of Electrical and Electronic Engineering, Faculty of Engineering, Niigata University
  • WTANABE Shinji
    Department of Information Engineering, Faculty of Engineering, Niigata University
  • ISHII Ikuo
    Graduate School of Science and Technology, Niigata University

Bibliographic Information

Other Title
  • 非可視型バーコードの構成材料に関する基礎研究[II]

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Description

In a previous report (MBE98-25), we described the possibility of a black-invisible bar code that incorporated a special infrared transparent pigment. We also introduced the prototype for a high density gray-scale bar code. Because of the need for the widest application of the invisible bar code, we have now developed other colors. This report outlines the work involved. In our experiments we prepared two types of pigment: one is absorbent and contains carbon black (CB) and the other is transparent and contains AM-BK. Both are mixed to the same pigment. The colors used include two shades of yellow, red and blue. Instead of CB, we also prepared a new infrared absorbent pigment which is transparent in visible light. In the final prototype we use brighter colors with the invisible bar codes, using the same pigments.

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Details 詳細情報について

  • CRID
    1571135652406955648
  • NII Article ID
    110003287549
  • NII Book ID
    AN1001320X
  • Text Lang
    ja
  • Data Source
    • CiNii Articles

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