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Question:

what kind of ink is used on us dollars?

and i heard that there are magnetic signitures on new dollars these days what is the material used to make this possiable

Answer:

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As far as ink goes, the government is keeping their mouth shut. Relatively speaking, the ink is the easy part. Money is made in two places in the US, so it is easy to keep secure. Metal plates for printing are created by hand and take a ton of time to make. Basically, ink is smeared on the metal plate, and with a 100 pounds per square inch, is forced onto the blank bill. The ink is actually raised due to the pressure, deterring counter fitters. The sheets are cut into individual bills. Colored Ink and watermarks further prevent fake bills. The ink is extremely fine in some areas of the bill with small concentric lines, and microscopic printing occurs in some areas, like Benjamin Franklin's Coat ($100). Ink also is color changing, between green to black. The bill is the hard part. Made of cloth (not paper), it very difficult to copy. The magnetic part you are referring to is a strip that glows under ultraviolet light. Different color for every bill and very difficult to put in, a reliable way to tell fakes. The other part is, and the exact way it is done is unknown, is that inside the bill is ink that only appears when held to direct light. That's why most bills over $20, store clerks will hold it to the light to see if the watermark (a different picture of the historical figure on the bill) appears. Hope this helps!

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