These printers use the AR-450MT cartridge:

Sharp AR M-280

Sharp AR M-280 N

Sharp AR M-280 U

Sharp AR M-300 N

Sharp AR M-300 U

Sharp AR M-350

Sharp AR M-350 N

Sharp AR M-350 U

Sharp AR M-450

Sharp AR M-450 N

Sharp AR M-450 U

Sharp AR P-300

Sharp AR P-350

Sharp AR P-450