Use VersaInk-nano 64 MS MICR Black Ink Cartridges in your inkjet printer to generate 100% bank compliant checks and VersaInk-nano 64 CS Tri-color ink cartridges contain cyan, yellow and magenta ink 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 HP Tango, HP Tango X, HP ENVY 6220, HP ENVY 6222, HP ENVY 6230, HP ENVY 6232, HP ENVY 6252, HP ENVY 6255, HP ENVY 6258, HP ENVY 7120, HP ENVY 7130, HP ENVY 7132, HP ENVY 7155, HP ENVY 7158, HP ENVY 7164, HP ENVY 7800, HP ENVY 7820, HP ENVY 7830, HP ENVY 7855, HP ENVY 7858, HP ENVY 7864