Canon Pixma IP6700D no longer supported in El Cap.
After printing without problem in Yosemite, El Cap brings about native (yes I know it used CUP drivers) support for my printer to an end. Real shame as this printer is a workhorse; having faithfully printed for the past several years. Oddly the IX 6700 is supported so don't make the mistake in selecting this driver as your prints will require a magnifying lens.
So there is the Gutenprint driver package which work nicely however ink levels are not communicated to the computer:
http://gimp-print.sourceforge.net/MacOSX.php
There is also PrintFab which I am trying out. It provides all the info (ink levels too!), settings, and parameters I am used to and if I can get a year or 2 more out of this printer then I'll probably go for it. Now watch Apple update Canon drivers to include the IP6700D soon after 😉
Printfab supported printers: http://www.printfab.net/printers.html
Mac Pro, OS X El Capitan (10.11), Alu 20 Display, 32GB Touch5G/iPad2