| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a laser marking multilayered sheet for an electronic passport which excels in laser marking quality and is high in contrast between raw and un-printed part and printed part, is able to acquire clear characters, symbols and images, excels in heating fusion quality in lamination process and also has good conveyance nature of a sheet, good release characteristic from a mold after heat press, good heat resistance nature, and good bending nature, and to provide an electronic passport using the same. <P>SOLUTION: The invention refers to a laser marking multilayered sheet for electronic passports having five-layered construction with a multilayered sheet A/a multilayered sheet B/a film C/a multilayered sheet B/a multilayered sheet A. The laser marking multilayered sheet for electronic passports has the multilayered sheet A which is a transparent laser marking multilayered sheet, the multilayered sheet B which is a color pigmentation laser marking multilayered sheet and the film C which is a film. The product excels in laser marking quality, and is high in contrast between raw and un-printed part and printed part, and is able to acquire clear characters, symbols and images. Above all it excels in alteration protection and falsification prevention. <P>COPYRIGHT: (C)2010,JPO&INPIT |
