HP 1055CMHP - Manual (Page 59)

HP No.80 Ink Supplies Troubleshooting
3-3 HP DesignJets 1050C and 1055CM Printers Service Manual
The HP No.80 printhead cleaners keep the printheads in good
condition and they prevent them from being damaged when the
printer is not active. They service the printhead, making sure it’s
always ready to be used.
Identifying the Components
The following illustration will help you identify the components of
the HP No.80 supplies.
HP DESIGNJET 1050 C B
M Y C
Printhead
Printhead Cleaner Ink Cartridge
C6074074