| 发明名称 |
Originalitätsgesichertes elektrisches Papier |
| 摘要 |
<p>Tamper-evident electric paper is made of two sheets of electric paper (100,200) bonded together, the bottom sheet of which includes a pattern. Any attempt to erase a writing on the top sheet of electric paper results in the pattern on the bottom sheet of electric paper being erased. Therefore any tampering by erasure of a writing on the tamper-evident electric paper is revealed by the absence of a portion of the pattern on the bottom sheet of electric paper. Single sheet tamper-evident electric paper (300) has a complex pattern (310), such as an encryption, printed on a single sheet of electric paper. Any attempt to erase a writing on the electric paper also erases a portion of the encryption, thereby providing evidence of tampering. <IMAGE></p> |
| 申请公布号 |
DE60040768(D1) |
申请公布日期 |
2008.12.24 |
| 申请号 |
DE2000640768 |
申请日期 |
2000.01.24 |
| 申请人 |
XEROX CORP. |
发明人 |
MACKINLAY, JOCK D.;BOBROW, DANIEL G.;GREENE, DANIEL H.;HEBEL, L CHARLES;SHERIDON, NICHOLAS K.;SMITH CRAIG A.;EMERSON, WILLIAM C. |
| 分类号 |
G06K19/10;G09F9/37;B31B49/00;B32B3/00;B32B27/14;B41M3/14;B41M5/00;G02B26/02;G06K19/06 |
主分类号 |
G06K19/10 |
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