He did not use ink, and instead used only pencil.

For example, you can use inks that cannot be seen.

In some countries, people write by using ink and brushes.

You really should write to them, preferably using green ink.

In 1988 she began to make drawing on paper, using ink and watercolor.

He was using secret inks that did not show until developed by some process.

You should write inside the boxes, using black ink and capital letters.

A more important problem, however, is that some of the inks used by the government are magnetic.

The injury was followed by damage to the right eye as a result of using invisible ink.

The inks used may be oil based or water based.