INK WITH COHESIVE FAILURE AND IDENTIFICATION DOCUMENT INCLUDING SAME
摘要
The present invention provides ink that is designed to cohesively fail upon a de-lamination attack. A resulting failure pattern is preferably difficult to predict. The ink (32,34) is applied to an identification document (30) including a core (31) and laminate layer (33,35). The ink is characteriz ed such that an adhesive strength of the ink to the core and an adhesive strength of the ink to the laminate layer is each greater than the cohesive strength of the ink itself. Thus&comma ; the ink rips apart in a somewhat random-like manner upon a de-lamination attack. The ink can be arranged in interwoven or interlocking patterns or in other desired patterns and locations.
申请公布号
WO03056408(A3)
申请公布日期
2004.01.29
申请号
WO2002US41470
申请日期
2002.12.23
申请人
DIGIMARC ID SYSTEMS, LLC;JONES, ROBERT;BLOOMBERG, BENTLEY