Printhead Assembly 406 dpi 4inch - PM42, PM43, PM43c
Printhead Assembly 300 dpi 4inch - PM42, PM43, PM43c
Printhead Assembly 203 dpi 4inch - PM42, PM43, PM43c
Printhead 300 dpi, 12 dots/mm, 4inch - PF4i, PM4i
Printhead 203 dpi, 8 dots/mm, 4inch - PF4i