Agfa-Gevaert

Peter Geerts

Eric Verschueren

A method for treating a micro-emulsion that can be used for removing the ink-accepting areas of a lithographic printing master is disclosed, which enables to recycle the water from the used micro-emulsion. The method comprises the heating of the micro-emulsion to a temperature above 50&#xb0; C. thereby obtaining an aqueous phase and an organic phase and separating the aqueous phase from the organic phase.

Method of lithographic printing with a reusable substrate

Method of offset printing with a reusable substrate

According to the present invention there is provided a heat mode imaging element for making a lithographic printing plate having on a lithographic base with a hydrophilic surface a first layer including a polymer, soluble in an aqueous alkaline solution and a top layer on the same side of the lithographic base as the first layer which top layer is IR-sensitive and unpenetrable for an alkaline developer wherein said first layer and said top layer may be one and the same layer; characterized in that said top layer contains a compound that increases the dynamic friction coefficient of the top layer to between 0.40 and 0.80.

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Balen, Belgium

Peter Geerts