TROY MICR Toner Secure MICR Toner produced by TROY provides a level of quality to meet or exceed the highest printing standards. Produced within TROY ISO 9001:2000 certified facility, our MICR toner cartridges are precision-matched to meet the print characteristics of each printer model. Produced by TROY with the tightest tolerances, these MICR toner cartridges consistently meet or exceed the yield of OEM cartridges, providing customers with a low operating cost. HP only supports MICR products in LaserJet Printers that have been modified to the TROY specification. TROY products are fully supported by HP Service and will NOT void the HP manufacturer warranty. Printer reliability is guaranteed with MICR toner cartridges produced by TROY. TROY unique manufacturing and testing process has resulted in a toner which is precision-matched for each unit helping to maintain optimum performance of your laser printer. TROY MICR Toner Secure™ was created as a way to hel prevent fraudulent alteration of documents. The patented security agent forces a bright red stain to permeate through the document if chemical alteration is attempted. TROY patented solution is the first laser toner, which will help to protect the words and graphics you are printing.