HP CM8000 Color Multifunction Printer series - Manual (Page 76)

Replace ink cartridges
The device uses four color ink cartridges and one bonding agent cartridge. The bonding agent adheres
the ink to the paper and improves the durability of the printed output.
A message appears on the control panel whenever a cartridge needs to be replaced. The control-panel
message tells you which cartridge needs to be replaced.
An ink cartridge expires twelve months after the date of installation if it is installed prior to the install-by
date shown on the ink cartridge package. If it is installed after the install-by date, the ink cartridge will
expire in less than twelve months.
NOTE: The bottom of each cartridge has a unique shape so it fits only into its corresponding slot.
1. Open the ink-cartridge door.
68 Chapter 3 Maintain the device ENWW