Frequently Asked Questions
What code goes on the purchase order for this box?
Quote 370AR011, also known as TK-421. That is the code pair printed on every unit inside, so the box that arrives can be checked line-by-line against the PO before it goes into the supply cupboard.
Are all five cartridges in the pack identical?
Yes — five of the same black cartridge, each individually sealed and each carrying the full 15,000-page rating. There are no mixed variants in the box, which is the point for a stockroom: any unit pulled from the shelf is the right one for the KM-2550.
What should we check when the delivery lands?
Count the units, then look the outer boxes over for crush damage or broken seals before signing anything off internally. If a carton arrives damaged, note it with the carrier and let us know promptly; a damaged unit is covered and does not need to enter your stock.
How do we keep five cartridges organized once they are shelved?
Date the outer box on arrival, issue the oldest stock first, and treat the second-to-last cartridge as the reorder trigger. Kept sealed at room temperature away from heat and damp, the units wait without any attention until their turn comes.
One unit from the middle of the pack failed months later. Is it still covered?
Yes. The pack is backed by a 1-year warranty and 1-year free returns, and cover attaches to each cartridge individually — a unit opened months after delivery is still handled on its own merits, without returning the rest of the pack. Support is reachable Monday through Friday, 9 AM to 5 PM CST.
Does fitting a cartridge from this pack need a service visit?
No. The change is a couple of minutes: old unit out, new unit rocked gently side to side to loosen the powder, slid in until it clicks, cover closed. No tools, no settings, and the machine is back in service immediately.
What is the per-cartridge price inside the five-pack?
Dividing the $335.50 pack price by five gives $67.10 per 370AR011 / TK-421 cartridge — the lowest per-unit figure this cartridge is sold at in a single order. Across the pack's 75,000 rated pages the running cost is about 0.45 cents per page at standard coverage, which is the number a stockroom can carry into a budget for the KM-2550.
How do we predict when this pack will run out?
Read the copier's page counter monthly and note the difference; that is the machine's true burn rate. Dividing it into 15,000 gives the months each cartridge will last in your building, and multiplying by the cartridges left on the shelf gives the date the stock runs dry. Work backwards from that date rather than forwards from delivery, and the second-to-last cartridge — the reorder trigger — arrives on the calendar with plenty of warning.
A cartridge starts leaving streaks halfway through its life — what should we do?
Lift it out and check it is seated fully; a unit that is not quite home can misbehave. Rock it gently side to side, refit it until it clicks, and run a test batch. Streaking that survives a refit is not something to live with: cover attaches to each cartridge individually, so the unit is replaced or refunded on its own while the rest of the pack carries on.
How should a stockroom handle the empties a five-pack produces?
Keep a marked carton for spent units, well away from the sealed reserve, and drop each empty TK-421 into the packaging its successor came in as it is removed. When the carton fills, the batch goes out for recycling or disposal in one trip. The one unit never to toss into that carton unidentified is a cartridge that failed early — its claim is individual, so it stays labeled until it is settled.
About This Kyocera TK-421 Black Toner 5 Pack
This 5 pack — order code 370AR011, the TK-421 — is the stockroom option for an office that runs its copier hard and does not want toner on the critical list: five identical black cartridges at $335.50, each rated at 15,000 pages. Stock ships from our warehouses in IL, PA, GA and CA, with the delivery and returns terms on our shipping & returns page. The rest of the Kyocera-Mita range is on the site for the other machines in the building.
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