| 摘要 |
PURPOSE:To enable plate making directly from a copy on a plate material for lithographic printing and to eliminate processings such as developing, exposing, washing, etc., by laminating an electrothermosensitive transfer plate making material and a plate material for lithographic printing which has a certain surface resistance and by applying electricity from the side of a resin layer which contains a certain amount of metal and has a certain surface resistance. CONSTITUTION:An electrothermosensitive transfer plate making material is prepared by lamination of a resin layer containing metal which consists of metal powder and resin matrix, and which contains 5-60% by volume of metal powder and has an electric surface resistance of 10<5>-10<16>OMEGA, and a breakdown of which would not occur at the time of electric plate making; and thermal transfer layer which consists of a thin metal film with a surface resistance of 0.1-1OMEGA, and has a conductive layer of which a breakdown would not occur at the time of electric plate making, and consists of a thermosetting resin and a hardening agent, and which is not yet thoroughly thermoset. The above plate making material is laminated so that the thermal transfer layer should abut the surface of the plate material for lithographic printing. The thermal transfer layer is transferred to the plate surface by heat generated by the application of electricity from the side of the metal containing resin layer and, at the same time, an image is formed by setting the transferred thermosetting resin. |
