| 发明名称 |
SECURITY SHEET |
| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a security sheet having a printing function useful for judgement of authenticity or prevention of forgery or alteration or the like. <P>SOLUTION: This security sheet is formed by laminating a paper base material, a laser beam irradiation color developing resin layer made of a resin composition including a resin as a vehicle and a colorant developing color through laser beam irradiation under the condition that the content of the colorant developing color through laser beam irradiation is 0.01-50.0 wt.% to the resin and a paper base material in the order named. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
| 申请公布号 |
JP2005279940(A) |
申请公布日期 |
2005.10.13 |
| 申请号 |
JP20040092860 |
申请日期 |
2004.03.26 |
| 申请人 |
DAINIPPON PRINTING CO LTD |
发明人 |
UEKI TAKAYUKI;MITA KOZO;TARUYA TAKASHI |
| 分类号 |
B42D15/10;B23K26/00;D21H21/40;(IPC1-7):B42D15/10 |
主分类号 |
B42D15/10 |
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