These printers use the T073420 cartridge:

Epson Stylus C-79

Epson Stylus C-90

Epson Stylus C-110

Epson Stylus C-97300

Epson Stylus CX-3900

Epson Stylus CX-4900

Epson Stylus CX-5500

Epson Stylus CX-5900

Epson Stylus CX-6900 F

Epson Stylus CX-7300

Epson Stylus CX-8300

Epson Stylus T-20

Epson Stylus T-21

Epson Stylus TX-100

Epson Stylus TX-110

Epson Stylus TX-200

Epson Stylus TX-210

Epson Stylus TX-400

Epson Stylus TX-410

Epson Stylus TX-550 W

Epson Stylus Office B-40 W

Epson Stylus Office T-30

Epson Stylus Office T-40 W

Epson Stylus Office TX-300 F

Epson Stylus Office TX-510 FN

Epson Stylus Office TX-600 FW

Epson Stylus Office TX-610 FW