FS-1900
The Kyocera FS-1900 is a veteran monochrome laser printer from the generation before network models became the default, and plenty of them are still on desks earning their keep. Its supply is the TK-50H black cartridge, rated at about 15,000 pages; the listings stocked for this page carry that same cartridge under Kyocera part 1T02BR0US0. A yield that size is exactly why these machines stayed in service so long — toner changes were rare events, not monthly chores.
Keeping an FS-1900 running today is an exercise in simplicity: no network stack to nurse, no color set to balance, just one long-life black cartridge and a machine built heavily enough to outlast several generations of replacements. Owners tend to be offices that value a printer which asks for almost nothing — feed it paper, change the cartridge a couple of times a year, and it returns the favor with plain, dependable text output.
Toner Cartridges for FS-1900
| Cartridge | Color | Page Yield |
|---|---|---|
| TK-50H (1T02BR0US0) — Black | Black | ~15,000 pages |
| TK-50H (1T02BR0US0) — Black | Black | ~15,000 pages |
| TK-50H (1T02BR0US0) — Black | Black | ~15,000 pages |
| TK-50H (1T02BR0US0) — Black | Black | ~15,000 pages |
| TK-50H (1T02BR0US0) — Black | Black | ~15,000 pages |
| TK-50H (1T02BR0US0) — Black | Black | ~15,000 pages |
| TK-50H (1T02BR0US0) — Black 2 Pack | Black | ~15,000 pages each |
| TK-50H (1T02BR0US0) — Black 2 Pack | Black | ~15,000 pages each |
| TK-50H (1T02BR0US0) — Black 2 Pack | Black | ~15,000 pages each |
| TK-50H (1T02BR0US0) — Black 2 Pack | Black | ~15,000 pages each |
| TK-50H (1T02BR0US0) — Black 2 Pack | Black | ~15,000 pages each |
| TK-50H (1T02BR0US0) — Black 2 Pack | Black | ~15,000 pages each |
| TK-50H (1T02BR0US0) — Black 4 Pack | Black | ~15,000 pages each |
| TK-50H (1T02BR0US0) — Black 4 Pack | Black | ~15,000 pages each |
| TK-50H (1T02BR0US0) — Black 4 Pack | Black | ~15,000 pages each |
| TK-50H (1T02BR0US0) — Black 4 Pack | Black | ~15,000 pages each |
| TK-50H (1T02BR0US0) — Black 4 Pack | Black | ~15,000 pages each |
| TK-50H (1T02BR0US0) — Black 4 Pack | Black | ~15,000 pages each |
Which cartridge should you buy?
All listings above are the same cartridge at about 15,000 pages (ISO/IEC 19752, roughly 5% coverage), so the decision is purely how much stock to hold. A single cartridge already covers a long stretch on a lightly used machine. The 2-pack is the sweet spot for an office that depends on its FS-1900 daily — one in the printer, one on the shelf, no interruption when the change comes due. The 4-pack suits facilities keeping several of these printers alive at once, where a bulk buy lowers the per-cartridge cost across the fleet.
Chip, toner and everyday use
Older Kyocera cartridges reward a little patience: when print starts to lighten, remove the cartridge and rock it slowly from side to side a few times to redistribute the toner before concluding it is empty — on a 15,000-page cartridge the recovered pages add up. Keep the printer's interior free of loose toner dust with a dry, lint-free cloth during changes, and never touch the cartridge's shutter or drum surface. Spares keep best sealed, flat and away from heat sources; a cartridge stored properly waits years without complaint.
Frequently Asked Questions
Which toner does the FS-1900 use?
The TK-50H black cartridge, rated for approximately 15,000 pages at about 5% coverage per ISO/IEC 19752. Coverage-heavy work — dense forms, graphics — will finish a cartridge sooner than the rating.
The listings mention FS-1800 and part 1T02BR0US0 — is that the right cartridge?
Yes. The cartridge stocked for this family is sold under listings that carry Kyocera part 1T02BR0US0 and the FS-1800 family name; it is the same black cartridge the FS-1900 takes, shared across the models in the family list below.
Do multi-packs make sense for a printer this age?
If the machine is a daily driver, yes — the 2- and 4-packs cut the per-cartridge cost and guarantee a spare is on hand. For a backup printer used a few times a month, a single cartridge is the sensible buy.
What coverage backs these compatible cartridges?
A 1-year warranty and 1-year returns, so even on a legacy machine a faulty cartridge is a replacement or a refund rather than a loss.
More printers that use the same cartridges
The same cartridge family also covers the FS-1800, FS-1800N, FS-1900N, FS-3800 and FS-3800N.