Frequently Asked Questions

How do I know this is the check-printing cartridge for the M605n?

By the cartridge number and the fill: this is the CF281A — HP 81A — in MICR form, the version whose toner carries a magnetic component for bank-readable check lines. It's built for the Enterprise M605n and costs $137.86.

What does MICR stand for in practice?

Magnetic Ink Character Recognition — the system banks use to process the line of numbers at the bottom of a check. The reader senses the characters magnetically rather than optically, which is why the toner itself has to be magnetic. Your Enterprise M605n does the printing; this cartridge supplies the readable line.

Can you assure us the bank will process our checks?

No seller can honestly assure that. Acceptance comes from the combination of the bank's equipment, your blank check stock and how your software positions the line. So the advice is built into every MICR sale we make: print a small sample batch first and have your bank test it before any live run.

A branch office would run this unattended most of the week — is that workable?

It's a common setup. The cartridge lives in the printer, check stock lives in the tray, and the run happens when the payment schedule says so. Because a check page is mostly empty, toner use per run is modest, and the M605n will flag the cartridge long before it actually runs dry.

What's the rated yield?

10,500 pages for the CF281A. Set against check printing — one check, a stub and a single magnetic line per page — that rating covers a long series of payment cycles. Most offices find the cartridge outlasts their expectations set by ordinary document work.

What support and terms come with the order?

The cartridge carries our 1-year warranty with 1-year free returns and ships from our Illinois, Pennsylvania, Georgia or California warehouses. Our team is reachable Monday–Friday, 9 AM–5 PM CST, delivery terms are on the shipping & returns page, and more of the range is in the HP category.

About This M605n MICR Cartridge

For a branch or back office that prints its own vendor and payroll checks, this is the enabling piece: the familiar 81A cartridge, refilled in concept with MICR toner, rated at 10,500 pages and priced at $137.86. Install it in the M605n, prove the first batch at the bank, and the check run becomes just another job the printer handles.