![]() ![]() Similarly, Franklin’s nature-printed images produced fine details that were particularly difficult for less skilled printers to duplicate. ![]() ![]() Franklin’s fillers served to make bills hardier and thus extend their life over the cheaper paper preferred by criminals, while his dyed threads added another production barrier. Counterfeiters naturally sought to keep their costs low, and thus were often slow to invest in improving their own printing techniques. These techniques raised numerous barriers to would-be copycats. The paper also highlights Franklin’s use of “nature printing,” a technique by which he transferred the detailed vein patterns of tree leaves to printing plates. The researchers examined Franklin’s penchant for including watermarks, tiny indigo-dyed threads and “fillers” of special crystal in printed bills to create barriers to copycats. “And then we found some very interesting differences between this money and other printers.” “The goal was to decode what type of material they used,” Manukyan said in an interview. The intent, said lead author Khachatur Manukyan, a Notre Dame associate professor of physics, was to learn more about the materials used by Franklin and his network of affiliated printers and how they served to distinguish their bills from cheaper copies. Researchers also used electron microscopes for imaging fine details. ![]() The new research, published Monday in the Proceedings of the National Academy of Sciences, describes data gathered with techniques such as spectroscopy and fluorescence tests, which use light to identify elements such as carbon, calcium and potassium in test samples. A team at the University of Notre Dame has shed new light on his methods using advanced scanning techniques that reveal some of Franklin’s methods in greater detail - along the way, also providing one more reason Franklin appears on the $100 bill. So add one more to the roster: his early work in printing colonial paper currency designed to counter a constant threat of counterfeiting.įranklin was an early innovator of printing techniques that used colored threads, watermarks and imprints of natural objects such as leaves to make it far harder for others to create knockoffs of his paper bills. founding father that it’s easy to lose track of his accomplishments. SAN FRANCISCO (AP) - Benjamin Franklin was so busy as an inventor, publisher, scientist, diplomat and U.S. Business & Finance Click to expand menu.We will continue to support you and our communities with the best quality care and service possible.Ĭlick for our Locations Map & Services tools. The health of our patients and team members is our top priority. Kent Island Office – 130 Love Point Road 410.643.3331Ĭhestertown Office 6602 Church Hill Road 410.810.0032įulton (Maple Lawn) Office 11810 W. Lutherville/Towson Office 1312 Bellona Avenue 410.921.3378 THE FOLLOWING LOCATIONS ARE OPEN AND HOURS LISTED:Īnnapolis Office – 122 Defense Hwy 410.571.0350 Please note the adjustments to our office schedule and offered services. ![]()
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