Replacing an ink cartridge
You can check the ink level at any time by accessing the INK menu and pressing the 
key. Information on each ink cartridge is displayed at
The front panel warns you when a cartridge's ink level is low or when a cartridge is empty.
You are recommended to replace the empty cartridge with a new HP ink cartridge: see How do I …Replace an ink cartridge.
Although it is possible to use refilled or
●There is some risk of damaging the printer. In this case the printer warranty will not be valid for any printer repairs that are related to the cartridge, nor for any problems due to ink contamination.
●You will invalidate the warranty of all printheads of the same color used in the printer subsequently, unless and until the whole ink system (including ink tubes) is replaced.
●Print quality may be impaired.
●The printer will be unable to estimate the ink level in the cartridge, and will report it as empty.
Ink cartridge storage and disposal
CAUTION Securely put a used ink cartridge into a plastic bag and dispose of it as industrial waste. Observe any regulations for disposal of ink cartridges.
NOTE HP Ink Cartridges should be installed before the “Install By” date printed on the cartridge. Use of the Ink Cartridge 3 months beyond the “Install By” date may cause deterioration in print quality or a printer malfunction.
Store ink cartridges in a dry, cool and dark place.
Always use the recommended consumables (media, ink, etc.). Failure to follow this instruction may cause poor print quality, printer malfunction, printer failure, or a safety hazard.
HP 780 Waste Ink Bottle
The HP 780 Waste Ink Bottle is used for collecting waste ink that is discharged from the printer during cleaning processes. Only use the recommended HP 780 Waste Ink Bottle.
WARNING! Waste ink is combustible. Keep an HP Waste Ink Bottle containing waste ink away from open flames, sparks, or other sources of ignition.
Tell me about the ink system
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