发明名称 |
Magnetic ink medium and corresponding reading unit, and method for using same |
摘要 |
The magnetic ink medium includes a plurality of magnetic regions which have diversifiable magnetic intensity and are mutually separated by spaces. At least one first part of the regions has a magnetic coercivity which differs from the remaining regions of the plurality of regions, in order to obtain at least two different readouts of the same plurality of regions upon applying different magnetic fields for orientating the plurality of regions.
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申请公布号 |
US5196681(A) |
申请公布日期 |
1993.03.23 |
申请号 |
US19890441668 |
申请日期 |
1989.11.27 |
申请人 |
MANTEGAZZA ANTONIO ARTI GRAFICHE S.R.L. |
发明人 |
MANTEGAZZA, ANTONIO |
分类号 |
G06K19/12;G07F7/08 |
主分类号 |
G06K19/12 |
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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