Erosion Printing on Metalized Plastics for Transparencies and for Offset Printing
Original Publication Date: 1987-Jul-01
Included in the Prior Art Database: 2005-Feb-01
Electrical erosion printing on metalized plastics provides a basis for direct preparation of transparencies and for preparation of offset masters under computer or communication device control. The required wettability differential necessary for offset printing is obtainable when using the aluminized polyester film. The film is non-wetting (hydrophobic), while the aluminum residue wets very well (hydrophilic). These masters, when used with offset presses, produce high resolution print on suitable papers. The input can be from sources as simple as a typewriter to sources as complicated as computers, facsimile and image scanners. Offset masters can be generated directly. With color offset printing, this ability to generate masters on the machine potentially reduces alignment problems.