公开(公告)号：EP2018274B1

公开(公告)日：2010-10-27

申请号：EP07733667.5

申请日：2007-05-09

申请人： Optaglio Limited

发明人： JOHN, Drinkwater

IPC分类号： B41M3/00 ,  B41M7/00

CPC分类号： A63F3/06 ,  A63F3/0665 ,  A63F2003/067 ,  A63F2003/0675 ,  A63F2250/302

摘要： The present invention provides for a data protection device comprising an optically variable diffractive scratch-layered structure overlying data to be protected, wherein the device includes at least first and second opaque metallic layers separated by a flexible light-absorbing separation layer.

公开(公告)号：EP2018274A1

公开(公告)日：2009-01-28

申请号：EP07733667.5

申请日：2007-05-09

申请人： Optaglio Limited

发明人： JOHN, Drinkwater

IPC分类号： B41M3/00 ,  B41M7/00

CPC分类号： A63F3/06 ,  A63F3/0665 ,  A63F2003/067 ,  A63F2003/0675 ,  A63F2250/302

摘要： The present invention provides for a data protection device comprising an optically variable diffractive scratch-layered structure overlying data to be protected, wherein the device includes at least first and second opaque metallic layers separated by a flexible light-absorbing separation layer.