75abd686_HP_8250_printer__Component
[Features] The pump works in two directions, moving ink from the replaceable cartridges to the printhead reservoir and removing air from the printhead. The tubes are emptied to reduce evaporation of ink components and deposits of dried ink. [Benefits] Ink is used more efficiently because air is removed from the system without wasteful priming. [Component] 
Pump
I n k c a r t r i d g e s
P u m p
I n k s e n s o r
F a c t o r y i n s t a l l e d p r i n t h e a d
V e n t c h a m b e r
I n k s u p p l y s t a t i o n
HP 8250 printer
Component