HP Officejet Pro L7550 - Supported ink cartridges

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Supported ink cartridges

The availability of ink cartridges varies by country/region. The ink cartridges might
come in different sizes. To obtain a list of supported ink cartridges for your device,
print the self-test diagnostic page and read the information in the ink cartridge status
section. [For more information, see

Understand the self-test diagnostic page


You can find the ink cartridge number in the following places:

On the self-test diagnostic page (see

Understand the self-test diagnostic page


On the label of the ink cartridge you are replacing.

Windows: From the Toolbox, if you have bidirectional communication, click the
Estimated Ink Levels tab, scroll to display the Cartridge Details button, and then
click Cartridge Details.

Mac OS: From the HP Printer Utility, click Supply Info from the Information and
panel, and then click Retail Supplies Information.


Ink from the cartridges is used in the printing process in a number of

different ways, including in the initialization process, which prepares the device and
cartridges for printing, and in printhead servicing, which keeps print nozzles clear
and ink flowing smoothly. In addition, some residual ink is left in the cartridge after
it is used. For more information see



Maintain and troubleshoot