my Canon MG3600 scanner quit working. the printer still works

Did you just change your operating system? When you do this can happen and sometimes printers will stop working. Normally, the solutions to install a newer OS compatible Cannon software for your scanner.

Hi,

The following models in the Canon MG3600 series are listed in About AirPrint - Apple Support. Is your printer one of these models? Are you using the driverless AirPrint technology for printing?

• Canon MG3610
• Canon MG3620
• Canon MG3630
• Canon MG3640
• Canon MG3650
• Canon MG3660
• Canon MG3670
• Canon MG3680

https://www.canon.co.uk/support/consumer_products/apple_airprint_guide/

For scanning, it should be possible to use Apple's Image Capture (but a driver may be needed). Just as an example, the MG3650 has an ICA driver for macOS 12 Monterey (but not, for some reason, macOS 13 Ventura):

https://www.canon-europe.com/support/consumer_products/products/fax__multifunctionals/inkjet/pixma_mg_series/pixma_mg3650.html?type=drivers&language=en&os=macos%2012%20(monterey)

(a CUPS printer driver is available for macOS 13 Ventura).

If necessary, if nothing else works, a paid third-party driver called VueScan could perhaps be of interest:

https://www.hamrick.com/vuescan/canon_mg3600.html#technical-information