The HP Color Copier 155 uses two compatible ink cartridges. Black ink replaces the HP 45 (51645A) and prints about 1,100 pages. Tri-color ink replaces the HP 23 (C1823D) and prints about 690 pages. Both are standard capacity. The same ink also works with the HP Color Copier 140, Color Copier 145 and Color Copier 150.
