BizHub C20

Konica Minolta built the BizHub C20 as the compact color MFP: a small-footprint machine that still prints, copies and scans in full color. It runs the TN-318 four-cartridge set — TN-318K (A0DK133) in black, TN-318C (A0DK433) in cyan, TN-318M (A0DK333) in magenta and TN-318Y (A0DK233) in yellow. Each cartridge answers to both names, the TN number and its A0DK factory number, and every listing on this page is a compatible version of one of those four units.

Machines like the C20 often land in small offices precisely because the purchase looks light — one compact box instead of a departmental unit. The running cost tells a longer story, because a color machine consumes four cartridges whether it prints four pages a day or four hundred. Offices that get the best value from a C20 are the ones that treat its toner as four separate small budgets rather than one occasional surprise, replacing a color when it empties instead of waiting for a deadline to expose the shortage.

Toner Cartridges for BizHub C20

Which cartridge should you buy?

Start from how the machine is stocked today. A brand-new C20, or one whose previous owner ran every cartridge to empty, is the one case where a four-color set makes sense, and this shelf offers that set in both a standard and a premium-quality build. From then on, single cartridges are the economical pattern: the C20 tracks each color independently, so there is never a reason to retire a half-full magenta because the black ran dry. In most offices the black cartridge cycles two or three times for every color change, which is why a two-black pack sits among the listings — it matches the machine's real appetite. Colors are best bought one at a time as the panel calls for them.

Chip, toner and everyday use

After any cartridge change on the C20, run the machine's color calibration before judging print quality; an uncalibrated swap is the most common reason fresh toner looks off. The MFP expects all four cartridges present even for a black-only job, so an empty color can hold up plain correspondence — one more argument for keeping a spare of each. Cartridges click into keyed bays and should register without force; if the panel does not clear, remove the unit and seat it again. Keep unopened spares in their packaging, standing upright in a cupboard away from heat, and they will wait patiently for their turn.

Frequently Asked Questions

Do all four TN-318 cartridges have to be replaced together in the BizHub C20?

No. Each color is metered on its own, and the machine only asks for the cartridge that is actually empty. Replace colors individually as they run out; black is normally the first to go in a text-heavy office.

Can the BizHub C20 print a black-only document while a color cartridge is empty?

Generally no — the C20 wants all four cartridges present and serviceable before it will run, even for monochrome work. Keeping one spare of each color on hand means an empty cyan never blocks an urgent black-and-white report.

Colors look wrong right after I fitted a new TN-318. What should I check?

Run the color calibration first; skipped calibration after a change is the usual cause of shifted hues. If one color still prints incorrectly afterward, that specific cartridge is the suspect and should be exchanged.

Which TN-318 cartridge will my BizHub C20 use up first?

Black, in almost every office, because letters, invoices and reports are mostly text. A design- or marketing-led workplace can invert that pattern, but for general correspondence the TN-318K is the cartridge to watch.

More printers that use the same cartridges

The TN-318 set is shared across the whole compact C20 line: BizHub C20P, BizHub C20PX and BizHub C20X.