Method for making a lithographic base and a lithographic printing plate therewith
AssigneeAgfa-Gevaert
InventorsEric Verschueren, Bavo Muys, Jan Dierckx, Jean Van Trier, Wim Cortens
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Abstract
The present invention provides a method for obtaining a lithographic base comprising on a hydrophobic support a hydrophilic layer contiguous to said support containing a non-gelatinous hydrophilic (co)polymer or (co)polymer mixture, characterized in that said hydrophobic support is treated with a plasma treatment with an applied power density during the plasma treatment of at least 70 W min/m.sup.2 before applying to said support said hydrophilic layer.
Claims8
A method for obtaining a lithographic base comprising the steps of
- a) plasma treating a hydrophobic support with an applied power density during the plasma treatment of at least 175 W min./m.sup.2 ;
- and
- b) coating on the support a hydrophilic layer containing a non-gelatinous hydrophilic (co)polymer or (co)polymer mixture.
A method for obtaining a lithographic imaging element comprising the steps of
- a) plasma treating a hydrophobic support with an applied power density during the plasma treatment of at least 175 W min./m.sup.2 ;
- b) coating on the support a hydrophilic layer containing a non-gelatinous hydrophilic (co)polymer or (co)polymer mixture;
- and
- c) applying a heat-or photosensitive composition on said hydrophilic mixture.
Dependencies are inferred from the claim text.