In my (several) discussions with various people at Canon regarding printer drivers, I was told that Apple no longer gets the drivers from the printer company. They (Apple) wants to control everything and that is why I couldn't download a driver for my Pixma TS9120 from Canon for OS X 10.9.6 (Mavericks). As it turned out, I was able to use the printer with Mavericks through Bonjour and, it fact, it worked better than with El Capitan. It would not scan in El Capitan, but would in Mavericks. And Apple used to be the company with the "It just works" philosophy. Not so much now.I know that Apple periodically announces updated printer drivers. I suspect they are given to Apple by the manufacturers.