These printers use the C6578 cartridge:
HP Color Copier 180
HP Color Copier 190
HP Color Copier 280
HP Color Copier 290
HP Color Copier 310
HP Color Copier 310 Digital
HP DeskJet 916 C
HP DeskJet 920 C
HP DeskJet 920 CVR
HP DeskJet 920 CXI
HP DeskJet 930 C
HP DeskJet 930 CM
HP DeskJet 932 C
HP DeskJet 934 C
HP DeskJet 935 C
HP DeskJet 940 C
HP DeskJet 940 CVR
HP DeskJet 940 CW
HP DeskJet 940 CXI
HP DeskJet 948 C
HP DeskJet 950 C
HP DeskJet 952 C
HP DeskJet 955 C
HP DeskJet 957 C
HP DeskJet 959 C
HP DeskJet 960 C
HP DeskJet 960 CSE
HP DeskJet 960 CXI
HP DeskJet 970 C
HP DeskJet 970 CSE
HP DeskJet 970 CXI
HP DeskJet 980 C
HP DeskJet 980 CXI
HP DeskJet 990 C
HP DeskJet 990 CM
HP DeskJet 990 CSE
HP DeskJet 990 CXI
HP DeskJet 995 C
HP DeskJet 995 CK
HP DeskJet 1180 C
HP DeskJet 1220 C
HP DeskJet 1220 C-PS
HP DeskJet 1220 CSE
HP DeskJet 1220 CXI
HP DeskJet 1280
HP DeskJet 3810
HP DeskJet 3816
HP DeskJet 3820
HP DeskJet 3820 V
HP DeskJet 3820 W
HP DeskJet 3822
HP DeskJet 6112
HP DeskJet 6112 C
HP DeskJet 6122
HP DeskJet 6127
HP DeskJet 9300
HP DeskJet 9300 DES
HP DeskJet P-1000
HP DeskJet P-1100
HP DeskJet P-1100 XI
HP Digital Copier 310
HP Digital Copier Printer 310
HP FAX 1200 Series
HP FAX 1220
HP FAX 1220 CI
HP FAX 1220 Series
HP FAX 1220 XI
HP FAX 1230
HP FAX 1230 XI
HP OfficeJet 5105
HP OfficeJet 5110
HP OfficeJet 5110 A21
HP OfficeJet 5110 V
HP OfficeJet 5110 XI
HP OfficeJet G-55
HP OfficeJet G-55 XI
HP OfficeJet G-85
HP OfficeJet G-85 XI
HP OfficeJet G-95
HP OfficeJet K-60
HP OfficeJet K-60 XI
HP OfficeJet K-80
HP OfficeJet K-80 XI
HP OfficeJet V-30
HP OfficeJet V-40
HP OfficeJet V-40 XI
HP OfficeJet V-45
HP PhotoSmart 1000
HP PhotoSmart 1000 XI
HP PhotoSmart 1100
HP PhotoSmart 1100 XI
HP PhotoSmart 1115
HP PhotoSmart 1115 CVR
HP PhotoSmart 1115 VM
HP PhotoSmart 1215
HP PhotoSmart 1215 VM
HP PhotoSmart 1218
HP PhotoSmart 1218 XI
HP PhotoSmart 1315
HP PhotoSmart 1315 VM
HP PhotoSmart P-1000
HP PhotoSmart P-1000 XI
HP PhotoSmart P-1100
HP PhotoSmart P-1100 XI
HP PhotoSmart P-1215
HP PhotoSmart P-1215 VM
HP PhotoSmart P-1218
HP PhotoSmart P-1218 XI
HP Printer Scanner Copier 700 SE
HP Printer Scanner Copier 720
HP Printer Scanner Copier 750
HP Printer Scanner Copier 750 All In One
HP Printer Scanner Copier 750 SE
HP Printer Scanner Copier 750 XI
HP Printer Scanner Copier 750 XI All In One
HP Printer Scanner Copier 760
HP Printer Scanner Copier 900 SE
HP Printer Scanner Copier 920
HP Printer Scanner Copier 950
HP Printer Scanner Copier 950 All In One
HP Printer Scanner Copier 950 SE
HP Printer Scanner Copier 950 VR
HP Printer Scanner Copier 950 VR All In One
HP Printer Scanner Copier 950 XI
HP Printer Scanner Copier 950 XI All In One
Decision-Data DeskJet 6127
Microboards Print Factory
Olivetti Jobjet P-200