Assertion: ballpoint pen's ink | /r/ObjectUse | used in fountain pens
Facets:
Source sentences:
text: Water-based inks used in fountain pens can fade over time are less likely to adhere to other types of surfaces.
text: The ink in a ballpoint is different from the ink used in a dip or fountain pen.
text: The ink used in a fountain pen, the ballpoint’s predecessor, is thinner to facilitate better flow through the nib—but put that thinner ink inside a ballpoint pen, and you’ll end up with a leaky mess.
text: Ballpoint pens uses a thick oil-based ink, whilst rollerball pens use a water-based ink, more similar to the ink used in fountain pens.
text: Sakura also developed the first water-based gel inks, seeking a modern recreation of the free-flowing inks used in fountain pens.
text: Briefly, rollerball pens use smooth-writing water-based inks which are similar in many ways to the inks used in fountain pens.