This enables a pen to fill either from cartridges or from a bottle of ink. Several of his pen and ink drawings survive. He decided to create a pen using the same type of ink. "Reflex blue" used to be the name of a common blue pigment in ink manufacturing. A paintbrush is a brush used to apply paint or sometimes ink. The paper surrounding the ink dots is usually unprinted. A metallic foil can be heat pressed and stamped onto any plastisol ink. Feeds often feature finned structures intended for buffering fountain pen ink. Importance was attached also to the colour of the ink itself. It is usually done with ink brushes. Silk is also used in some forms of ink painting. He proved this by creating recognized masterpieces of calligraphy and classic ink painting. This version also introduced digital ink and handwriting recognition support. Yet others think an aqueous procedure may preserve items written with iron gall ink. Colorful ink in water, ink drop.