These printers use the 89903 cartridge:

Gestetner DSC 322

Gestetner DSC 328

Gestetner DSC 332

Gestetner DSC 338

Infotec IS C-2028

Infotec IS C-2432

Infotec IS C-2838

Nashuatec DSC 332

Nashuatec DSC 338

Rex DSC 332

Rex DSC 338

Ricoh Aficio 2228 C

Ricoh Aficio 2232 C

Ricoh Aficio 2238 C