These printers use the MX-51NTCA cartridge:

Sharp MX 4110 N

Sharp MX 4111 N

Sharp MX 4112 N

Sharp MX 4140 N

Sharp MX 4140 NSF

Sharp MX 4141 N

Sharp MX 4141 NSF

Sharp MX 5110 N

Sharp MX 5111 N

Sharp MX 5112 N

Sharp MX 5140 N

Sharp MX 5141 N