Agfa-Gevaert

Agfa Gevaert Nv

Agfa Nv

Eco3 Bv

Ludo Vervloet

Paul J Coppens

Paul R Callant

Philippe Moriame

Rik Vandenbruwaene

Iris Bogunovic

Method of making a heat-mode lithographic printing plate precursor

The present invention provides an alkaline processing solution comprising at least one silver halide solvent other than sulfite, characterized in that said alkaline processing solution further contains aluminium ions in an amount of at least 0.3 g/l. There is further provided a method for making a lithographic printing plate according to the DTR-process using an aqueous alkaline processing solution in the presence of at least one developing agent and at least one silver halide solvent, characterized in that said alkaline processing solution contains aluminium ions in an amount of at least 0.3 g/l.

Process solution and method for making a lithographic aluminum offset plate by the silver salt diffusion transfer process

According to the present invention, there is provided a silver salt diffusion transfer material, comprising on a hydrophilic surface of a support in the order given (i) an image receiving layer containing physical development nuclei, (ii) a photosensitive layer containing a silver halide emulsion being in water permeable relationship with said image receiving layer and (iii) a top layer containing gelatin, said silver halide emulsion being spectrally sensitized with a dye with a sensitizing maximum between 380 and 430 nm, characterized in that said top layer comprises a compound I

Silver salt diffusion transfer material sensitized for blue light

The present invention provides a method for making an offset printing plate according to the silver salt diffusion transfer process comprising the steps of:

Method for making an offset printing plate according to the silver salt

The present invention provides an imaging element comprising in the order given on a hydrophilic surface of a support (i) an image receiving layer containing physical development nuclei, (ii) an intermediate layer and (iii) a photosensitive layer containing one or more silver halide emulsions being in water permeable relationship with said image receiving layer, characterized in that said intermediate layer comprises at least 0.08 mmole/m.sup.2 of a bromide salt.

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Kessel, Belgium

Ludo Vervloet