Agfa Gevaert Nv

Agfa-gevaert

Roland Robinson

Philip John Watkiss

John Michael Kitteridge

Allen Peter Gates

Andreas Elsaesser

Steffen Denzinger

Simon John Blanchard

Michael Doerr

Jonathan William Goodin

Malcolm James Mallison

Guenther Hultzsch

Heat sensitive printing plate precursors

The invention relates to a recording material for the production of an offset printing plate, having a substrate on whose front a photosensitive image layer is present and on whose back a layer of an organic polymeric material having a glass transition temperature T,of 45&deg; C. or more is present. The photosensitive image layer, or any top layer present thereon, has a pigment layer formed thereon.

Pigmented recording material having a backing coating for the production of offset printing plates

The invention provides a lithographic printing plate precursor comprising a grained and anodized aluminium substrate having coated thereon a silver halide emulsion layer, the back surface of said substrate being coated with an inert coating which does not chemically or physically interact with an adjacent silver halide layer when two plates are placed in front to back contact. Fogging of the silver halide layer is avoided and the use of the back coating eliminates the requirement for the use of tissue interleaving when wrapping and packing the lithographic printing plate precursors.

Presensitized printing plates

Growing community of inventors

Leeds, United Kingdom

Roland Robinson