Computer-to-plate by ink jet
AssigneeAgfa-Gevaert
InventorsJohan Loccufier, Marc Van Damme
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Abstract
A method for preparing a lithographic printing plate by means of ink jet printing is disclosed. The ink jet fluid contains an oleophilizing compound having in its chemical structure a boron containing group capable of reacting with the surface of a lithographic receiver.
Claims16
A method for the preparation of a lithographic printing plate, said method comprising dispensing information-wise by means of inkjet printing droplets of a fluid onto a surface of a lithographic receiver, characterized in that said fluid contains an oleophilizing compound having in its chemical structure a boron containing group capable of reacting with said surface of said lithographic receiver, wherein said oleophilizing compound is a boronic ester or boronic acid represented by following general formula (I):
- wherein R1 is selected from the group consisting of a substituted or unsubstituted, saturated or unsaturated aliphatic chain, a substituted or unsubstituted aryl or heteroaryl group;
- R2 and R3 are independently selected from a hydrogen, a counterion to compensate negative charge a substituted or unsubstituted, saturated or unsaturated aliphatic chain, a substituted or unsubstituted aryl or heteroaryl group;
- all R-groups may form rings with each other.
Dependencies are inferred from the claim text.