Liquid phase plasma treatment for improved detachment of pigmented inkjet printed paper

Abstract

A new method of improving deinking of flexographic and inkjet printed paper has been investigated. It was found that the liquid plasma treatment method was able to improve the ink elimination and luminosity without negatively impacting the color a* or ink elimination of the recycled paper. However, it was found that the filtrate darkening was increased by the liquid plasma treatment because the treatment was not able to increase the amount of ink removed through flotation. Because of this, the liquid plasma treatment is likely improving the deinkability parameters by improving the ink detachment of flexographic and inkjet inks.