VersaInk-nano Compatible MICR 61MS Ink Cartridge for Check Printing - Replacement for 61 Black (CH561WN) Replaces HP 61 Black (CH561WN) with bank check compliant MICR black ink. Compatible with magnetic check readers used at Retail stores & banks New x-wave MICR technology delivers powerful magnetic signal performance (&gt; 100% ANSI x9) to exceed compliance with USA & Canadian bank standards and deliver flawless check acceptance everywhere. Ultra-crisp Print quality for documents and images. Resists fading, smearing and chemical alterations. Compatible with: HP deskjet 1000, 1010, 2540, ENVY 4500, Officejet 2620, 4630 printers