Method for paper treatment

摘要

Provided herein is a surface treatment method of oil contaminated xerographic prints which increases the adhesion of the print to levels close to the values corresponding to the original uncontaminated paper. Subjecting the contaminated surface to corona treatment alone and in combination with ultraviolet (UV) radiation and ozone can change the chemical structure of the surface of the paper in such a way that a highly polar surface is created as a consequence of this treatment, leading to enhanced adhesion properties of the xerographic print.

主权项

1. A method for treating a xerographic print, comprising:
providing a source of highly charged electrical ions; directly exposing a xerographic print to the highly charged electrical ions, wherein the xerographic print comprises a fused toner image with oil contamination; providing a source of ultraviolet radiation wherein the ultraviolet radiation comprises at least a first wavelength and a second wavelength; directly exposing the xerographic print to the ultraviolet radiation in an ozone containing atmosphere; generating bonding sites in the oil contaminated print from the treatment with the highly charged electrical ions, ultraviolet radiation and ozone to increase adhesion properties of the print, wherein the surface free energy of the untreated xerographic print is less than 35 mN/m, and is increased after the treatment.