These printers use the 841283 cartridge:
Lanier LD 520 C
Lanier LD 525 C
Gestetner MP C-2030
Gestetner MP C-2050
Gestetner MP C-4000
Gestetner MP C-5000
Ricoh Aficio MP C-2030
Ricoh Aficio MP C-2050
Ricoh Aficio MP C-2530
Ricoh Aficio MP C-2550
Savin C 9020 L
Savin C 9025