B - Operations – Transporting – 41 – N
Patent
B - Operations, Transporting
41
N
B41N 3/08 (2006.01) B41C 1/10 (2006.01) B41N 1/00 (2006.01) B41N 7/04 (2006.01) B41N 7/06 (2006.01)
Patent
CA 2108862
A method for producing an erasable printing form by making the outer layer of the printing form from a material containing strong micro-dipoles, preferably a ferroelectric material, in particular a ferroelectric ceramic. In wet offset printing, the non-printing areas of the printing form are rendered hydrophilic by a hydrophilizing agent and they are maintained during the entire printing process. Plate cleaners can, for example, be used as the hydrophilizing agents. The printing form can be erased by a non-polar solvent and can be reused again by rendering the non-printing areas hydrophilic again.
Méthode de production d'une forme d'impression effaçable. La méthode consiste à utiliser un matériau contenant de puissants micro-dipôles, de préférence un matériau ferro-électrique, en particulier une céramique ferro-électrique, pour constituer la couche extérieure de la forme. En impression offset humide, les zones non-imprimantes de la forme d'impression sont rendues hydrophiles au moyen d'un agent hydrophile et sont maintenues dans cet état pendant tout le processus d'impression. Des nettoyeurs pour plaques d'impression, par exemple, peuvent être utilisés comme agents hydrophiles. La forme d'impression peut être effacée au moyen d'un solvant non polaire et être réutilisée en rendant de nouveau hydrophiles les zones non-imprimantes.
Hirt Alfred
Nussel Barbara
Weiß Robert
Manroland Ag
Ridout & Maybee Llp
LandOfFree
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