Use VersaInk-nano 32 MS MICR Black ink in your Smart Tank inkjet printer to generate 100% bank compliant checks and VersaInk-nano 31 CS cyan, yellow and magenta inks to produce bright, vibrant color. The bank code line on the bottom of every check is required to be printed with magnetic (MICR) ink to be readable by Magnetic Ink Character Recognition devises (MICR check readers) used at retail and financial outlets everywhere. Compatible with VersaCheck Smart Tank 6001 MXE, Smart Tank series 5102, 6001, 7001, 7301, 7602, and HP Smart Tank Plus series 551, 555, 557, 559, 570, 571, 617, 651, 655.