| 摘要 |
PURPOSE:To provide low cost thermal screen printing stencil paper capable of drilling of an image with low energy and excellent in physical strength, by using electron beam irradiated polypropylene as a bent sensitive film. CONSTITUTION:Thermal transfer screen printing stencil paper to be usable is formed by bonding a porous support layer 1 and an electron beam irradiated polypropylene film layer 2 by an adhesive layer 4 or by providing a fusion preventing layer 3 for preventing the thermal fusion of the picture line of a manuscript on the electron beam irradiated polypropylene film layer 2. The polypropylene film itself of the stencil paper can be prepared as a substantially extremely thin film and, as a result, if electron beam is allowed to irradiate said film, a modified thin film is formed in an extremely easy manner and drilling can be performed with low energy and a drilling property is enhanced even in the case of a thin manuscript (halftone) like pencile writing or the boack and blue of an image of dye system low in carbon content and the reproducibility of the manuscript can be improved. |
