Heat-sensitive imaging material for making lithographic printing plates requiring no processing
AssigneeAgfa-Gevaert
InventorsJoan Vermeersch, Marc Van Damme, Guy Hauquier
Life of this patent
Estimating the term…
Abstract
According to the present invention there is provided a heat-sensitive imaging material for making lithographic printing plates which require no processing. The heat-sensitive imaging element comprises on a lithographic base having a hydrophilic surface a metallic or metal oxide layer and on top thereof an oleophobic oleophilic polymeric layer having a thickness of less than 5 μm and comprising a polymer containing phenolic groups.
Claims9
A heat-sensitive imaging material for making lithographic printing plates comprising on a lithographic base, having a hydrophilic surface, a silver layer or titanium oxide layer and on top thereof an oleophobic polymeric layer having a thickness of less than 5 μm wherein said polymeric layer comprises a polymer containing phenolic groups.
A method for making a lithographic printing plate comprising the step of image-wise exposing to actinic radiation a heat-sensitive element comprising on a lithographic base, having a hydrophilic surface, a silver layer or titanium oxide layer and on top thereof an oleophobic oleophilic polymeric layer having a thickness of less than 5 μm wherein said polymeric layer is not crosslinked and comprises a polymer containing phenolic groups.
A method for making multiple copies of an original comprising the steps of:
- image-wise exposing to actinic radiation a heat-sensitive imaging material comprising on a lithographic base, having a hydrophilic surface, a silver layer or titanium oxide layer and on top thereof an oleophobic oleophilic polymeric layer having a thickness of less than 5 μm wherein said polymeric layer is not crosslinked and comprises a polymer containing phenolic groups,
- starting printing without an additional wet treatment on the exposed imaging material.
Dependencies are inferred from the claim text.