What is in the ink on a newspaper?

Removing Ink from Newspapernewspaper can be recycled up to 5 times. When newspaper enters the recycling process at a de-inking mill it is washed in a solution of warm water and chemicals that turns it into a kind of mush. Through a combination of spinning and screening the mush, most ink and other unwanted particles are removed after which it is air treated in a flotation cell causes any remaining particles to float to the surface. After one last washing and screening, the mush is bleached and, if necessary, mixed with pulp from trees. This mixture is then squeezed to remove the water after which it is dried and pressed and is ready for use again.