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Plastic identity card capable of providing an inkless fingerprint and method of developing inkless prints on plastic card
Plastic identity card capable of providing an inkless fingerprint and method of developing inkless prints on plastic card
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机译:能够提供无墨指纹的塑料身份证和在塑料卡上显影无墨印刷品的方法
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摘要
A plastic identity card is provided with an ink absorbent coating over a preassigned space thereon. The ink absorbent coating includes a chemical reagent capable of chemically reacting with a substantially colorless developer solution applied by a finger thereto to provide a perceivable colorant product representative of the fingerprint ridge pattern.
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