Patent ID: 6535711
Filing Date: 2003-03-18
Classification: G03G

Abstract:
Process for the double-sided printing and/or coating of a substrate, in particular, of paper or cardboard, while using at least one liquid or dry toner that has at least one polymer, with the following steps:transfer of at first at least one toner layer or a first image that has at least one toner layer onto a first side of the substrate; the toner is heated up to at least its glass transformation temperature, fixing of the toner onto the substrate, whereby the original glass transformation point of the toner shifts to a higher temperature level as a result of the cross-linking of its polymer chains; transfer of at least one toner layer or a second image that has at least one toner layer onto the other, second side of the substrate; and heating of the toner located on the second side of the substrate up to a temperature that is equal to or greater than its glass transformation temperature.