In stock and available to ship same day. Supports printer model Lexmark Optra T610/T612/T614/T616 series. OEM 12A5740 MICR - used for check printing Magnetic Ink Character Recognition Toner Cartridge Yield 10,000 pages. Our ISO 9001 Certified MICR toner cartridges will exceed ANSI (American National Standards Institute), ABA (American Banking Association) and CBA (Canadian Banking Association) standards. The American Banking Association requires a MICR toner cartridge to produce an Iron Oxide Signal Strength of 50. Europe and Canada require a signal strength of 80. The signal strength of our MICR toner formula is 100 to 114. Part of our ISO 9001 Quality Process is to do a signal strength check on each batch of our MICR toner. Any MICR toner with a signal strength of less than 100 is rejected by our Quality Control team. This is a 12A5740 remanufactured toner cartridge that comes with our 100% Warranty: Checks and Toner.com warrants each cartridge to be free of defects in material and workmanship. If any cartridge is found to be defective, Checks and Toner.com will, at its option, replace the cartridge or refund the full purchase price. 1st time ordering? Email [email protected] with any questions/concerns. Customer service is our top priority.