Forme preparation

BPERFORMING OPERATIONS TRANSPORTING B41Printing, stamps B41CPROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES

B41C1/00Forme preparation

B41C1/003the relief or intaglio pattern being obtained by imagewise deposition of a liquid B41C1/006the relief or intaglio pattern being obtained by abrasive means B41C1/02Engraving Heads therefor B41C1/025characterised by means for the liquid etching of substrates for the manufacturing of relief or intaglio printing forms, already provided with resist pattern B41C1/04using heads controlled by an electric information signal B41C1/045Mechanical engraving heads B41C1/05Heat-generating engraving heads B41C1/055Thermographic processes for producing printing formes B41C1/06Transferring B41C1/08by embossing B41C1/10for lithographic printing Master sheets for transferring a lithographic image to the forme B41C1/1008by removal or destruction of lithographic material on the lithographic support B41C1/1016characterised by structural details B41C1/1025using materials comprising a polymeric matrix containing a polymeric particulate material B41C1/1033by laser or spark ablation B41C1/1041by modification of the lithographic properties without removal or addition of material B41C1/105by electrocoagulation, by electro-adhesion or by electro-releasing of material B41C1/1058by providing a magnetic pattern, a ferroelectric pattern or a semiconductive pattern B41C1/1066by spraying with powders, by using a nozzle B41C1/1075Mechanical aspects of on-press plate preparation B41C1/1083Mechanical aspects of off-press plate preparation B41C1/1091by physical transfer from a donor sheet having an uniform coating of lithographic material using thermal means as provided by a thermal head or a laser; by mechanical pressure B41C1/12Multicolour formes B41C1/14for stencil-printing or silk-screen printing B41C1/141by cutting or perforation with mechanical means; Electrical spark cutting B41C1/142using a galvanic or electroless metal deposition processing step B41C1/144by perforation using a thermal head B41C1/145by perforation using an energetic radiation beam B41C1/147by imagewise deposition of a liquid B41C1/148by a traditional thermographic exposure using the heat- or light- absorbing properties of the pattern on the original B41C1/16Formes with areas rendered ink-resistant by covering with an amalgam Printing plates for amalgam printing B41C1/18Curved printing formes or printing cylinders B41C1/182Sleeves; Endless belts B41C1/184by transfer of the design to the cylinder B41C1/186by casting B41C1/188characterised by means for liquid etching of cylinders already provided with resist pattern