M3550idn
Listed under Kyocera's M-series naming, the M3550idn is a 55-page-per-minute monochrome multifunction — print, copy and scan with duplex and networking standard — built as a complete departmental solution for high-volume black-and-white work. Its cartridge is the TK-3122 (TK3122), the American part number for this platform's toner, rated for up to 21,000 pages per cartridge.
A machine like this anchors a department's document flow, so its supply has to match that scale: a cartridge measured in tens of thousands of pages, changed rarely, on a printer that otherwise asks for almost nothing. The M3550idn shares its platform with the ECOSYS M3560idn and its toner with the FS-4200DN printer, which keeps fleet stocking simple even when the hardware badges differ from one floor to the next.
Toner Cartridges for M3550idn
| Cartridge | Color | Page Yield |
|---|---|---|
| TK-3122 (TK3122) | Black — 2 Pack | Up to 21,000 pages per cartridge |
| TK-3122 (TK3122) | Black | Up to 21,000 pages |
| TK-3122 (TK3122) | Black | Up to 21,000 pages |
| TK-3122 (TK3122) | Black — 4 Pack | Up to 21,000 pages per cartridge |
The single cartridge appears under two listings in the store; both are the same TK-3122.
Which cartridge should you buy?
At up to 21,000 pages, the TK-3122 is already the high-capacity answer for this machine, so buying comes down to how many departments the shelf serves. One M3550idn working hard still takes a long while to finish a cartridge, and the 2 pack — one in the machine, one in reserve — is the configuration most offices settle on. Organizations running the M3550idn next to FS-4200DN printers should buy the 4 pack and pool the stock, since both machines draw the same cartridge; the pooled shelf cuts emergency orders to nearly zero and brings the per-page cost down with it.
Chip, toner and everyday use
The compatible TK-3122 includes the chip this platform reads for toner-level reporting, so the control panel and the network interface agree on what is left. When you change the cartridge, slide the new unit in until it seats fully and let the machine run its short initialization before sending work. Mid-life, if copies start to look lighter than prints, the cartridge is rarely the culprit — but a gentle rock to redistribute the toner is a quick first check. Keep spare cartons sealed and stored flat, away from heat sources, and rotate them oldest-first.
Frequently Asked Questions
Which toner does the M3550idn use?
The TK-3122 black toner cartridge — the US version of the cartridge documented in Europe as the TK-3130 — rated for up to 21,000 pages per ISO/IEC 19752.
Is M3550idn toner the same as FS-4200DN toner?
Yes. The two machines use the identical TK-3122 cartridge, so one stock item covers both.
How many pages does one TK-3122 print in this machine?
About 21,000 pages at roughly 5% coverage. Heavy coverage — dense forms, large graphics — reduces the real-world figure, as it does on any laser cartridge.
Does the M3550idn need a separate drum as a routine purchase?
Toner is the routine consumable for this platform; the ECOSYS design is built around long-life internal components, so regular ordering stays at the cartridge.
More printers that use the same cartridges
The TK-3122 is shared with one printer-only sibling in the store: the FS- 4200DN, whose page lists the same cartridges for the print-only side of the family.