A Lithographic Printing Plate Precursor
AssigneeEco3 BV
InventorThomas Billiet
Life of this patent
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Abstract
A lithographic printing plate precursor is disclosed including a support and a coating comprising (i) a photopolymerisable layer including a polymerisable compound and a photoinitiator, and a toplayer provided above the photopolymerisable layer: characterized in that the toplayer includes a halogenated polymer and a nitrite and/or nitrate salt.
Claims19
1-10. (canceled)
A negative-working lithographic printing plate precursor including an aluminum support and a coating comprising a photopolymerisable layer and a toplayer provided above the photopolymerisable layer,
- characterized in that the toplayer includes (a) a halogenated polymer and (b) a nitrite and/or nitrate salt.
A method for making a negative-working printing plate precursor, the method comprising:
- coating on a support (i) a photopolymerisable layer including a polymerisable compound and a photoinitiator, and (ii) a toplayer including (a) a halogenated polymer and (b) a nitrite and/or nitrate salt provided above the photopolymerisable layer, and
- drying the precursor.
A method for making a negative-working printing plate, the method comprising:
- image-wise exposing a negative-working lithographic printing plate precursor including an aluminum support and a coating comprising a photopolymerisable layer and a toplayer provided above the photopolymerisable layer including (a) a halogenated polymer and (b) a nitrite and/or nitrate salt, to heat and/or light radiation whereby a lithographic image consisting of image areas and non-image areas is formed, and
- developing the exposed precursor.
Dependencies are inferred from the claim text.