These printers use the 20-110 cartridge:

NEC Silentwriter 1700

NEC Silentwriter 1760

NEC Silentwriter 1765

NEC Superscript 1700

NEC Superscript 1760

NEC Superscript 1765

IBM 4317

IBM 4317 Network Printer

IBM Infoprint 17

IBM Network Printer 17

IBM NP 17 Network PTR 17

Lexmark 4317