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