This dissolves most of the ink, allowing the counterfeiter to then scrape off the rest with steel wool. The counterfeiter takes a real $5 bill and soaks it in a tray of heavy solvent, such as nail polish remover or another acetone chemical. One simple method is known as "bill bleaching," a process that nets the counterfeiter a blank piece of correctly sized currency paper which can then be overprinted with a higher denomination. Bureau of Engraving and Printing isn't possible. Of course, counterfeiters will go to great lengths to try to fool simple technologies like the detector pen, since getting their hands on the type of starch-free paper used by the U.S. The pen provides an easy and fast way to detect bills printed on normal copier paper instead of the fine papers used by the U.S. When the solution is applied to the fiber-based paper used in real bills, no discoloration occurs and the mark will remain pale yellow. It contains an iodine solution that reacts with the starch in wood-based paper to create a black, dark blue or brown stain. The counterfeit detector pen is extremely simple. These folks are not particularly careful or meticulous, so they copy or print onto normal, wood-based paper.
They are trying to create something close enough that people won't notice anything if they give the bill a passing glance. They are not trying to make an exact copy. Today, the threat is much more mundane - people with color copiers and color printers try to create passable facsimiles of a bill. It used to be that a counterfeiting operation used expensive presses and special inks and papers to create exact duplicates of the bills. The counterfeit detector pen solves the biggest counterfeiting threat today. If it does, the bill in question is, indeed, counterfeit. It simply takes too long - much faster and easier to make a pen mark and instantly see if it changes color. Other features include micro-writing, a watermark, which shows a faint image of Andrew Jackson to the right of the portrait, and very closely spaced lines (for example, behind Jackson's face) that are harder for a counterfeiter to reproduce.Īll of these features are nice, but no store clerk is going to stand and hold each $20, $50 or $100 bill he or she receives up to the light to check for a security strip. It reads "USA TWENTY" and includes a small flag. There's also a security thread embedded in the paper to the left of Andrew Jackson that is visible if you hold the bill up to the light. The most obvious of these features is the "20" in the lower right corner written in color-change ink, which will change color from copper to green when the bill is tilted. Bureau of Engraving and Printing, you know that they have an army of security features designed to make counterfeiting more difficult. If you have looked at the most recent $20 bills from the U.S.
The paper in a real bill contains no starch, so the pen mark will remain yellow. The indication can be found under on the screen.A counterfeit detector pen contains an iodine solution that reacts with the starch in wood-based paper to create a black, blue or brown mark. Repeat steps from 3 to 6 until the desired result is obtained. Check the adjustment result with output image.
To complete the adjustment, press and proceed to step 7.Īfter making the desired adjustment, press on the screen, on the screen, or Proof Copy on the control panel. To output a sample copy to check the adjustment result, proceed to step 6. To resume the standard level and return to the screen, press. Select one from to to make the copy image darker than the original. Select one from to to make the copy image lighter than the original. Make an adjustment for Copy Density on the screen. If you press on the screen, all adjustment items are returned to the standard level.