Kodak Polychrome Graphics, Gmbh

Alison Jane Brooks

Kevin Barry Ray

Christopher David McCullough

Gareth Rhodri Parsons

Deborah Jane Firth

There is described a method of preparing a lithographic plate which comprises coating on a lithographic support having a hydrophilic surface a layer of a radiation sensitive coating, imaging the coating then acting on the plate while on the press with aqueous fount solution to remove the unexposed areas of the coating, to reveal the hydrophilic surface of the plate and to leave an ink receptive image, wherein the radiation sensitive coating comprises a diazo salt of formula (I):

Lithographic plate precursor

There is described a method of preparing a lithographic plate which comprises coating on a lithographic support having a hydrophilic surface, a layer of a heat sensitive coating, digitally imaging the coating, then processing the plate with water to remove the unexposed areas of the coating to reveal the hydrophilic surface of the plate and to leave an ink receptive image, wherein the heat sensitive coating comprises a diazo salt of formula (I):

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West Yorkshire, United Kingdom

Alison Jane Brooks