Copystar copiers use the TK numbering scheme shared across the Kyocera platform, so a cartridge such as TK-679 or TK-859 is identified by that code rather than by the copier model on the front panel. Colour parts add a letter for the shade, which is how TK-859K, TK-859C, TK-859M and TK-859Y break down into black, cyan, magenta and yellow. Read the code from the cartridge you are pulling out and the rest follows.
Ordering a Complete Colour Set
Colour copiers rarely exhaust all four toners at the same rate, since black carries most text work while one colour tends to lead depending on what your office prints. Ordering the set together keeps a matched group on the shelf and avoids a half-finished job waiting on a single shade. Yield figures such as the 25k rating on TK-859K give a rough guide to how long a cartridge lasts at standard coverage.
