B431
The B431 is a monochrome laser printer for offices that need fast, sharp black-and-white documents. OKI's official specs pair it with the 4,000-page 44574701 standard cartridge or the 10,000-page 44574901 high-capacity version for heavy-duty printing.
Toner Cartridges for B431
This printer works with the following toner cartridges:
- Oki 44574701
- Oki 44574901
Frequently Asked Questions
Which toner fits the Oki B431?
The B431 uses black toner in two yield options: the standard 44574701 and the high-yield 44574901. Both fit the same slot, so you can switch between them at any replacement — you are never locked into one.
Standard 44574701 or high-yield 44574901 — which should I buy for the B431?
It depends on volume. The high-yield 44574901 costs more upfront but delivers a lower cost per page, so it wins for busy offices that print daily. If the B431 sits mostly idle and prints occasionally, the standard 44574701 avoids having an expensive cartridge age in the machine for months.
My B431 says toner is low but keeps printing — is something wrong?
No, that is normal. The “toner low” warning on the B431 appears while there is still a usable reserve in the 44574701 or 44574901 cartridge. You can keep printing until output actually fades, then swap in the new cartridge — just have the replacement ready so the warning does not turn into an interrupted job.