These printers use the BC-23 cartridge:
Canon Bubble Jet 15
Canon Color Bubble Jet 2000
Canon Color Bubble Jet 2100
Canon Color Bubble Jet 4000
Canon Color Bubble Jet 4100
Canon Color Bubble Jet 4200
Canon Color Bubble Jet 4300
Canon Color Bubble Jet 4400
Canon Color Bubble Jet 4550
Canon Color Bubble Jet 5000
Canon Color Bubble Jet 5100
Canon MultiPass C-5000
Canon MultiPass C-5100