Cartridge Numbers Explained: Every Major Brand, One Guide
Posted by Clever Supplies on Oct 3rd 2026
Disclosure: Clever Supplies sells compatible cartridges for all of these brands — which is exactly why we'd rather you buy the right number the first time than the wrong one twice.
HP, Brother, Canon, Lexmark, Kyocera, Ricoh — every brand runs its own numbering system, and none of them explain it on the box. This is the complete decoder: how each brand names its cartridges, what the letters and numbers mean, and how to never buy the wrong one.
The universal rule (all brands)
Every ca
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