These printers use the 6R1049 cartridge:
Xerox-Tektronix DocuColor 12
Xerox-Tektronix DocuColor 12 Copier-Printer
Xerox-Tektronix DocuColor 12 Printer
Xerox-Tektronix Document Centre 12 CP
Xerox-Tektronix Document Centre ColorSeries 5
Xerox-Tektronix Document Centre Color Series 50
Xerox-Tektronix Document Centre Series 50