@paul_007, Welcome to HP Support Community,
Thank you for posting your query; I’m here to help by guiding you through steps to resolve this issue
Check Paper Size Settings: Make sure the paper size settings in both your printer and the print settings of your computer match the size of the paper you're using. Sometimes, even a small discrepancy can trigger the error message.
Reset Printer: Turn off your printer, unplug it from the power source, wait for a couple of minutes, and then plug it back in. Turn the printer back on and see if the issue persists. Sometimes, a simple reset can resolve temporary glitches.
Update Printer Drivers: Ensure that your printer drivers are up to date. Sometimes, outdated drivers can cause compatibility issues with your operating system or applications. HP DeskJet 2722 All-in-One Printer Software and Driver Downloads | HP® Support
Check Printer Firmware: Visit the HP support website and check if there are any firmware updates available for your printer model. Updating the firmware can sometimes resolve various issues with the printer's functionality.
Try Different Application: If you're consistently encountering an error with PDF files, try printing from a different application to see if the issue persists. This will help determine if the problem lies with the PDF files or the printer itself.
Inspect Paper Tray and Feed Rollers: Ensure that the paper tray is loaded correctly and that the paper guides are adjusted properly to fit the paper size. Additionally, check for any debris or obstructions in the paper feed rollers that might be causing the paper to misfeed.
Paper Quality: Sometimes, low-quality or damaged paper can cause printing errors. Try using a different batch of paper to see if that resolves the issue.
Reference:
HP DeskJet 2722 All-in-One Printer | HP® Support
HP printers - Paper Mismatch error (Windows, macOS) | HP® Support
I hope these steps help resolve the issue
Please feel free to reply here if you have any questions or if you need further clarification on any of the steps.
Take care and have a good day.
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Regards,