| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a package which allows sure identification of the authenticity or distribution route of the package by making it difficult to forge a barcode of a printing ink layer. <P>SOLUTION: The package includes a packaging material having a heat seal layer, a gas barrier layer provided on the heat seal layer, a basic ink layer provided on the gas barrier layer, a printing ink layer provided on the basic ink layer and including a barcode formed by an inkjet printer, and a cover layer provided on the printing ink layer. The barcode is formed of a combination of a plurality of thick bars, a plurality of thin bars, a thick space, and a thin space. Each thin bar is formed of a plurality of round ink units printed by the inkjet printer and aligned in at least one row. Each thick bar is formed of a plurality of round ink units printed by the inkjet printer and aligned in rows larger in number than the rows of the thin bar, and the overlap between adjacent rows of the round ink unit constituting each thick bar is 0.09-0.11 times the diameter of the round ink unit. <P>COPYRIGHT: (C)2012,JPO&INPIT |
