These printers use the FX4 cartridge:
Canon Fax L-450
Canon Fax L-800
Canon Fax L-900
Canon FAX L-9000
Canon FAX L-9500
Canon L 800
Canon L 900
Canon L 2500
Canon L 2600
Canon L 8500
Canon L 9000
Canon L 9000 MS
Canon L 9000 S
Canon L 9500
Canon L 9500 MS
Canon L 9500 S
Canon Laser CLass 8500
Canon Laser Class 9000
Canon Laser Class 9000 MS
Canon Laser Class 9000 S
Canon Laser CLass 9000 S/MS-MFP
Canon Laser CLass 9500
Canon Laser Class 9500 MS
Canon Laser CLass 9500 S/MS-MFP
Canon Laser Class 9800
Canon LaserClass 9000 I
Canon LaserClass 9000 L
Canon LaserClass 9500 L
Canon LaserClass 9500 S
Canon LC 8500