Agfa Offset Bv

Eco3 Bv

Eva Vermeiren

Johan August Loccufier

Thomas Billiet

Fabienne Goethals

Katleen Himschoot

Faïma Lazreg

A lithographic printing plate precursor is disclosed which comprises a support, a photopolymerizable image recording layer and an overcoat which comprises a low-molecular radical inhibitor. After image-wise exposure, the plate is heated whereby the radical inhibitor diffuses from the overcoat to the image recording layer, resulting in an increase of the daylight stability of the exposed and heated precursor. Such plate is especially suitable for on-press processing.

Lithographic photopolymer printing plate precursor with improved daylight stability

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 has a thickness comprised between 0.1 g/mand 1.75 g/mand includes an infrared absorbing compound which includes a thermocleavable group which transforms into a group which is a stronger electrondonor upon exposure to heat and/or IR radiation, and is capable of forming a printout image upon exposure to heat and/or IR radiation.

Lithographic printing plate precursor

Growing community of inventors

Mortsel, Belgium

Eva Vermeiren