Assertion: ink's amount | /r/HasProperty | controlled
Facets:
value: by applying an electrical voltage
type: MANNER
Source sentences:
text: The amount of tack can be controlled by changing the amount of solvent or other diluent used in the ink.
text: The amount of solvent that the gel absorbs is controlled by applying an electrical voltage; variation of the voltage makes it possible to tune the ink to any shade in the color spectrum.