These printers use the CQ123A cartridge:

HP Scitex FB-500

HP Scitex FB-500 INDUSTRIAL Printer

HP Scitex FB-550

HP Scitex FB-550 Printer

HP Scitex FB-700

HP Scitex FB-700 INDUSTRIAL Printer

HP Scitex FB-750

HP Scitex FB-750 Printer

HP Scitex FB-950 Printer