The process of voltage control to limit the volume of liquid delivered is used in:

A.
Laser printers

B.
Thermal printers

C.
Impact printers

D.
Inkjet printers

Explanation:

http://www.embedded.com/design/prototyping-and- development/4403968/Designing-aliquidlevelcontrol-delivery-system-for-use-in-medical— industrial-control-processes