Printhead
The Printhead is the heart of the printer, spanning nearly the length of the drum.
Using its 1236 jet nozzles (309 jets for each primary color), with a horizontal motion
of slightly less than 5 mm (0.2 inches), the Printhead can print the entire image on the
rotating drum. The Printhead provides one size ink drop, which is used for all print-
quality modes.
Reservoir
Drum
Printhead
Jet stack
Head driver board
Purge Tube
s8400-122
2-10
Phaser 8400 Printer Service Manual