HP LaserJet 4100 series laser printer - Security MICR Toner for printing CHECKS (approx 7,000 page/yield). This MICR toner creates a bright red stain if text alteration is attempted.

HP LaserJet 4100 series laser printers - Security MICR Toner for printing CHECKS (10,000 Yield). This MICR toner creates a bright red stain if text alteration is attempted.

HP LaserJet 4100 series laser printer - MICR SECURITY Toner for printing CHECKS (approx. 10,000 Yield). This toner creates a red stain if text alteration is attempted.

HP LaserJet 4100 series laser printer - Black Toner Cartridge made by Xerox (same as HP# C8061X) (approx. 10,000 page/yield)