Cleaning Cards - Evolution

Evolution

The cleaning card has evolved with the equipment they need to clean. A good example is the bill acceptor. Initially, the bill acceptor was designed for vending machines as a means of selling candy to the public. It includes a device that recognizes that a US one dollar bank note has been inserted. The cleaning card was required to be the same shape as US currency in order to be accepted into the device to clean it. Vending machines began accepting higher denominations as well as having the ability to make change. Specialized sensors were introduced into the bill acceptors to recognize multiple denominations and to only accept media that contained bank note characteristics. The bill acceptor cleaning card was redeveloped to contain magnetic ink and bank note characteristics so as to be accepted by the equipment. The development of bill acceptors for slot machines in the gaming and casino industry required the bill acceptor to be more sophisticated. The bill validators needed to validate currency of multiple denominations up to a one hundred dollar bank note. Fraud was now a critical issue and was addressed by multiple sensors and optics throughout the inserted currency pathway. These sensors and optics were recessed so as to keep currency from running across them with each insertion and wearing down sensitive lenses.