These printers use the S050188 cartridge:
Epson Aculaser C-1100
Epson Aculaser C-1100 D
Epson Aculaser C-1100 DN
Epson Aculaser C-1100 N
Epson Aculaser CX-11 N
Epson Aculaser CX-11 NF
Epson Aculaser CX-11 NFC