@gravgraham, Welcome to the HP Support Community!
The ink cartridges that go with the printers are setup ink cartridges that are designed to initialize the printer.
The Setup ink cartridges are not available in retail stores.
If you have checked inside the printer(Cartridge access area) and the printer box thoroughly and the Setup ink cartridges were not included, please contact our HP Support team for Service Options:
1) Click on this link - https://support.hp.com/us-en/contact-hp?openCLC=true
2) Select your product type below.
3) Enter the serial of your device.
4) Select the country from the drop-down.
5) Select the appropriate option based on your preference.
6) Fill the web-form and proceed further.
Keep me posted for any other assistance.
If you feel my post solved your issue, please click “Accept as Solution”, it will help others find the solution. Click the “Kudos/Thumbs Up" on the bottom right to say “Thanks” for helping!
KUMAR0307 I am an HP Employee
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