"Marking ink" find its composition and how is it different from ordinary ink?
Answers
Explanation:
India ink (British English : Indian Ink ; [1] also Chinese ink) is a simple black or colored ink once widely used for writing and printing and now more commonly used for drawing and outlining, especially when inking comic books and comic strips. India ink is also used in medical applications.
Composition
Basic India ink is composed of a variety of fine soot, known as
lampblack , combined with water to form a liquid. No binder material is necessary: the carbon molecules are in
colloidal suspension and form a waterproof layer after drying. A binding agent such as gelatin or, more commonly, shellac may be added to make the ink more durable once dried. India ink is commonly sold in bottled form, as well as a solid form as an
inkstick (most commonly, a stick), which must be ground and mixed with water before use. If a binder is used, India ink may be waterproof or non-waterproof.