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-aliquid-level-control-delivery-system-for-use-in-medical—industrial-control-processes