B - Operations – Transporting – 41 – C
Patent
B - Operations, Transporting
41
C
B41C 1/10 (2006.01)
Patent
CA 2495897
The invention relates to a method for copying a printing plate. Said plate is used for humid offset printing and comprises a basic substrate and a solvent soluble photosensitive layer. The inventive method consists in removing said photosensitive layer from adequate areas by deposing droplets of solvent thereon and in rinsing the plate in order to evacuate the deposed inactive solvent loaded with said photosensitive layer which is removed from the adequate areas.
La présente invention a pour objet un procédé original de copie d~une plaque d~impression. Ladite plaque, destinée à l~impression selon la technique de l~offset humide, comprend un substrat de base et une couche photosensible soluble dans un solvant. Ledit procédé comprend, de façon classique, l~élimination sélective de ladite couche photosensible aux emplacements et est caractérisé en ce que ladite élimination sélective comprend: le dépôt de gouttelettes dudit solvant auxdits emplacements adéquats; et le rinçage de la plaque pour l~évacuation du solvant déposé, alors chargé en la couche photosensible éliminée desdits emplacements et inactif.
Nouel Jean-Marie
Sim & Mcburney
LandOfFree
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