These printers use the CLI-221M cartridge:
Canon Pixma IP-3600
Canon Pixma IP-4600
Canon Pixma IP-4700
Canon Pixma MP-540
Canon Pixma MP-550
Canon Pixma MP-560
Canon Pixma MP-620
Canon Pixma MP-630
Canon Pixma MP-640
Canon Pixma MP-640 R
Canon Pixma MP-980
Canon Pixma MP-990
Canon Pixma MX-860
Canon Pixma MX-870
Canon Pixma PMFP 1
Canon Pixma PMFP 3
Canon Pixma SFP 1
Canon Pixma SFP 2
Canon PIXUS MP-610
Canon PIXUS MX-860