| 摘要 |
PURPOSE:To obtain a film for use in an overhead projector improved in fixation performance and image quality, by forming a transparent thin film layer not having pressure sensitive adhesiveness on a transparent resin layer having rubber-like elasticity formed on a transparent film. CONSTITUTION:A transparent thin film layer not having pressure sensitive adhesiveness is formed on a transparent resin layer having rubber-like elasticity at normal temperature formed on a transparent film. As the transparent film layer, for example, an alcohol-soluble cellulose derivative, such as ethyl cellulose, modified polyvinyl acetate, and/or polyamide modified epoxy resin alone or mixed may be used, or a water-soluble resin or an inorganic pigment may be coated. Thickness of the transparent thin layer varies in accordance with the material quality of the elastic layer and its thickness, and it is preferably 0.5-2mu. Too thin film thickness makes it impossible to prevent adhesion of the film face, and too large thickness weakens the effect of fixation improvement and offset prevention exerted by the elastic film, so both the case are not desirable. |
