发明名称 |
APPARATUS FOR ORIENTING MAGNETIC FLAKES |
摘要 |
<p>A printing apparatus includes a magnetic rotatable roller with a smooth even outer surface for aligning magnetic flakes in a carrier, such as an ink vehicle or a paint vehicle to create optically variable images in a high-speed, linear printing operation. Images can provide security features on high-value documents, such as bank notes. Magnetic flakes in the ink are aligned using magnetic portions of the roller, that can be formed by permanent magnets embedded in a non-magnetic roller body, or selectively magnetized portions of a flexible magnetic cover of the roller. In some embodiments, the roller is assembled for a plurality of interchangeable sections, which can include spinning magnets. Selected orientation of the magnetic pigment flakes can achieve a variety of illusive optical effects that are useful for decorative or security applications.</p> |
申请公布号 |
CA2574140(C) |
申请公布日期 |
2015.03.17 |
申请号 |
CA20072574140 |
申请日期 |
2007.01.16 |
申请人 |
JDS UNIPHASE CORPORATION |
发明人 |
RAKSHA, VLADIMIR P.;HOLMAN, JAY M.;COOMBS, PAUL G.;MARKANTES, CHARLES T.;PHILLIPS, ROGER W. |
分类号 |
G03G19/00;B05D3/14;B41F19/00;B41M3/14;B42D25/369;B42D25/373;B44D3/22;B44F1/02;B44F1/10;B44F7/00 |
主分类号 |
G03G19/00 |
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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