Speedy Inks B431d toner cartridge 10000 pages black

High-yield black toner for Okidata mono printers

This compatible cartridge replaces the Okidata 44574901 high-yield black toner and fits the B431d, B431dn, MB461 MFP, MB471 and MB471W models. It is built for offices that print large volumes of text-heavy documents and want a lower cost per page without changing hardware. The dye-based formulation is designed for crisp monochrome output on standard laser printers.

Thermal behaviour and power use in normal printing

As a toner cartridge it has no active cooling, fans or power draw of its own; heat and noise come only from the printer’s fuser and feed mechanism during a job. The cartridge simply supplies toner to the developer unit, so it adds no audible noise or measurable electrical load beyond what the printer already draws. Normal office use therefore sees no change in thermals or acoustics compared with the original cartridge.

Replaces the OEM 44574901 high-yield black cartridge

Swapping to this cartridge is worthwhile when the cost per page of the original supply is a concern and the printer is one of the listed Okidata mono models. It is not suited for colour printing, photo work or any device outside the B431d, B431dn, MB461 MFP, MB471 or MB471W range. Buyers who need colour output or a different page yield should look at the appropriate cartridge for their specific printer.