Lexmark 66S1000 66S1H00 66S1X00 MICR Toner and Drum Cartridge for Check Printing. MS531 MS631 MS632 MX532 MX632 Laser Printers. Extra High Yield 31,000 Pages *

Turn your Lexmark MS531 into an in-house bank-check printer with the Lexmark 66S1000 66S1H00 66S1X00 MICR toner-and-drum cartridge from MICR Toner Mart. It lays down the magnetic (MICR) ink that bank scanners read along the routing and account line of your checks, so you print bank-ready checks yourself — no separate check printer needed. Each cartridge is custom-built and signal-tested for a strong, bank-accepted MICR line.

Choose your purchase option

• Toner + Drum (first-time setup) — Your first MICR conversion includes both the MICR toner cartridge and a separate MICR imaging drum (two separate units). A fresh drum is required the first time because your printer's original drum is already contaminated with regular, non-magnetic toner, which would weaken the MICR signal.
• Toner only (reorder) — On every reorder you need only the toner. The MICR imaging drum lasts about 75,000 pages — roughly 2 toner cartridges at this cartridge's 31,000-page yield — so one drum carries you through many toner refills before it needs replacing.

Yields: MICR toner ≈ 31,000 pages · MICR imaging drum ≈ 75,000 pages.

Compatible printers: MS531 MS631 MS632 MX532 MX632

• Prints bank-readable MICR checks — guaranteed signal strength.
• 5-year cartridge life warranty.
• 25 years of MICR toner building — we were first to introduce MICR for most models.
• Custom MICR blending available for high-speed operation — contact us.
• Expert U.S. customer service, with printer and electrical engineers on staff.

Need just the drum? When your imaging drum eventually wears out (~75,000 pages), order the replacement imaging drum here →