Printhead - Xerox Phaser 8400 Service Manual

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
s8500-012
Theory of Operation 2-7