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Exactly as described, the full user-manual (145 pages). Perfect.
Text excerpt from page 84 (click to view)
Remove the empty ink tank.
r The color ink tank is on the left; the black ink tank is on the right. r Grasp the tab on the top of the tank and pull forward to release the ink tank. r Then lift the ink tank up and out of the BJ cartridge unit. r Dispose of the ink tank properly. You may want to place it in a plastic bag to keep from spilling any residual ink.