Genuine OEM HP Color Copier 145 Ink and Supplies
For the Color Copier 145, a pack of HP 45 ink is a black-only purchase. The HP 23 cartridge handles color separately. That makes the choice between a black twin-pack and an HP 45/23 combo about which inks you need, not just how many cartridges you order.
Toner Buzz carries genuine HP 45 and HP 23 ink, individually and in packs. The HP 45 twin-pack adds another black cartridge; the HP 45/23 combo brings black and color together. If only one ink supply needs attention, choose that cartridge on its own.