C5400

Positioned above the C5200 line, the C5400 is a color laser for workgroups whose color work actually leaves the building — proposals, presentations, customer-facing documents. It runs on OKI's Type C6 family: the 42804504 black toner (3,000 pages) paired with the 42804501 yellow, 42804502 magenta and 42804503 cyan toners (3,000 pages each). Every color also has a high-capacity counterpart with its own part number — cyan 42127403, magenta 42127402, yellow 42127401 — and those are the cartridges stocked on this page.

Demanding color work changes the supply priorities. When a faded or grainy page can land in front of a customer, 'almost empty' stops being good enough, and the high-capacity counterparts earn their place by keeping each color further from the edge. The C5400 rewards owners who treat color levels as something to glance at weekly rather than discover mid-print-run.

Toner Cartridges for C5400

Cartridge	Color	Page Yield
42127403	High Yield Cyan	See product page
42127402	High Yield Magenta	See product page
42127401	High Yield Yellow	See product page

Listed for this engine under the C5100n name as well: C5100n Toner Cartridge Cyan (42127403), C5100n Toner Cartridge Magenta (42127402), C5100n Toner Cartridge Yellow (42127401), the C5100n 3 Color Set and the C5100n 6 Color Set.

No black cartridge is listed on this page — the black for this engine is the 42804504 from the standard Type C6 set.

Which cartridge should you buy?

Two fitments, two habits. The standard Type C6 set — 42804504 black and the 42804501 to 42804503 colors at 3,000 pages each — suits a C5400 whose color work is occasional. The high-capacity counterparts stocked here suit the machine as it is usually run: color often, and in documents that matter. Replace each color as it empties rather than in lockstep, and set grayscale as the default for everyday text so the black cartridge does the routine work while the color set stays fresh for when it counts.

Chip, toner and everyday use

Grainy solid color blocks are this engine's classic early warning: a color cartridge is nearly empty, and solids show it before text does. Check the levels and replace the low color; if every cartridge reads full, run the cleaning cycle for the LED printheads. Remember that yield ratings assume about 5% coverage — a page of solid color can spend twenty times the toner of a memo page, so presentation-heavy weeks drain the color set far faster than the page count suggests.

Frequently Asked Questions

Which toner set does the C5400 use?

The C5400 uses the Type C6 set: yellow 42804501, magenta 42804502, cyan 42804503 and black 42804504, each rated at 3,000 pages — with high-capacity counterparts 42127403 cyan, 42127402 magenta and 42127401 yellow for longer intervals. Keep the numbers matched to this model.

My C5400 prints solid color blocks with a grainy texture. What is wrong?

Grain usually means a color cartridge is nearly empty — check the levels across the set and replace the low one. If the cartridges are full, run the cleaning cycle for the LED printheads before suspecting anything more serious.

Is the C5400 expensive to run for mostly black text?

Not particularly. Black text draws mainly on the 42804504 black cartridge and leaves the color set nearly untouched. Set grayscale as the default print mode to make sure everyday documents follow that pattern.