Information card

阅读:439发布:2022-12-11

专利汇可以提供Information card专利检索,专利查询,专利分析的服务。并且An information card for use in sales transactions, bank deposits or withdrawals and the like, which comprises a bottom layer of a light opaque material having holes formed therein to express a predetermined coded information such as the card identification number and the like, an intermediate layer of a translucent thermoplastic material on said information layer and a top layer of a transparent material covering said intermediate layer for protection of the upper surface thereof. These three layers are formed into a single card of laminated construction. The translucent material of the intermediate layer has a softening point much lower than those of the other layers, so that when heated and compressed for lamination, it flows into and fills the information holes in the bottom layer. The material filling the holes reinforces the bottom layer and consequently the card which would otherwise become very weak due to the presence of many holes and yet permits sufficient light to pass through the holes, so that with the other area of the bottom layer being substantially light opaque, very accurate photoelectric detection of the information holes can be achieved.,下面是Information card专利的具体信息内容。

1. An information card comprising a first sheet of a light opaque material formed with a plurality of holes arrayed in accordance with a predetermined code so as to express predetermined information, and a second sheet of a thermoplastic material having a softening point lower than that of said first sheet, said first and second sheets being compressed, while applying heat thereto, into a laminated unitary construction, with part of said second sheet material having flown into said holes in said first sheet to fill them.
2. The information card of claim 1, wherein said second sheet is translucent.
3. The information card of claim 1, wherein said first sheet material is vinyl chloride containing an additive of carbon powder.
4. The information card of claim 3, wherein said first sheet material contains a further additive of titanium oxide powder.
5. The information card of claim 1, wherein said second sheet material is vinyl chloride.
6. The information card of claim 2, further including an element which gives said card authenticity and by which said card can be distinguished from false cards.
7. The information card of claim 6, wherein said element is electrically detectable.
8. The information card of claim 6, wherein said element is magnetically detectable.
9. The information card of claim 6, wherein said element is sandwiched between said first and second sheets in an area thereof not overlapping the area in which said holes are formed.
10. The information card of claim 2, further including symbols visibly expressing a predetermined information and printed on the surface of said second sheet opposite to the surface thereof contacting said first sheet.
11. The information card of claim 10, further including a third sheet of transparent material covering said second sheet surface for protection thereof.
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