CODE MARK, CODE MARK MANUFACTURING METHOD, CODE MARK COGNITION SYSTEM, AND CODE MARK COGNITION METHOD

摘要

Provided are a code mark, a code mark manufacturing method, a code mark cognition system, and a code mark cognition method, comprising: a first mark layer on which a first mark material is printed or coated, wherein the first mark material is among at least two mark materials showing different emission wavelengths when receiving lights with different excitation wavelengths; a second mark layer on which a second mark material among at least two mark materials is coated or printed to laminate the second mark material on the first mark layer.;COPYRIGHT KIPO 2014