Cant find software to get hp C4780 for Big Sur

Is it possible to print with an HP Photosmart C4700 series driver from the Dec 11, 2020 package download from Apple? If not, try (again) to reset the printing system, and-re-add the printer.

Reset the Mac printing system to solve a problem - Apple Support

Add a printer on Mac - Apple Support

You did not mention scanning specifically in your question. Any error messages?

Anything of interest in the article You do not have permission to open the application' when using a scanner on Mac - Apple Support?

If it supports it just use AirPrint. I use that with my Photosmart and it works fine, including the scanner.

Hey there, 3Menwillcall!

From your post, it sounds like you are trying to get software updates for your HP printer. We’re glad that you reached out to the Apple Support Communities. We want to try and help get you pointed in the right direction. to start, check out this link with information on how to Update printer software on Mac.

If you've updated the printer and still have an issue, you may want to check out the steps on this page: Solve printing problems on Mac. If you Reset the Mac printing system to solve a problem, you'll want to follow this guide for how to Add a printer on Mac. We hope this information helps you out.

Cheers!

Hello,

To begin with, it may be a good idea to reset the printing system. Does the operating system offer a suitable driver to use?

If not, you may want to try the Dec 11, 2020 HP Printer Drivers v5.1 for macOS (https://support.apple.com/kb/DL1888?viewlocale=en_US&locale=en_US) package download from Apple. Look for something like the HP Photosmart C4700 series version 3.3.2 driver mentioned in the referenced Printer and scanner drivers for Mac - Apple Support article.

Unfortunately, the C4780 does not appear to support the driverless AirPrint technology.