发明名称 |
Thermal transfer printing ribbon for printing security bar code symbols |
摘要 |
Thermal transfer printing ribbon for printing security bar code symbols wherein the thermal transfer printing ribbon has been overprinted or overcoated in specific predetermined locations with a coating which has magnetic recognition characteristics. The difference in printed bar code symbols is invisible to the human eye and bar-code scanning equipment, but can be readily detected using a device capable of recognizing a magnetic signal.
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申请公布号 |
US5568177(A) |
申请公布日期 |
1996.10.22 |
申请号 |
US19950415276 |
申请日期 |
1995.04.03 |
申请人 |
AT&T GLOBAL INFORMATION SOLUTIONS COMPANY |
发明人 |
TALVALKAR, SHASHI G.;MCCREIGHT, MARION E. |
分类号 |
B41J31/08;(IPC1-7):B41J31/05 |
主分类号 |
B41J31/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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