These printers use the ERC-39PL cartridge:

Epson ERC 39

Epson MU 110

Epson MU 310

Epson MU 310 S

Epson MU 311

Epson MU 311 S

Epson MU 312 S

Olivetti INTERPOS 2000

Olivetti INTERPOS 2001

Olivetti Teknoline 2000

Olivetti Teknoline 2001

Omniprint OPC 311

Samsung ER 350 II