| 摘要 |
PURPOSE:To obtain a film having high thermal sensitivity, excellent contrast and resolution of projected image which can be used repeatedly and wherein over exposure/ under exposure can be judged easily, by providing a thermal layer mainly composed of resin base material and organic low molecular substance and having a reversibly variable transparency onto one face of a transparent supporting material while providing a conductive layer onto the other face. CONSTITUTION:A thermal layer 2 mainly composed of resin basic material and organic low molecular substance dispersed into the resin basic material and having transparency variable reversibly with temperature is provided onto one face of a transparent supporting material 1 in an original projection film, and a conductive layer 3 is provided onto the other face. When an original drawing is formed through thermal system, the original film for projection can be used repeatedly because it has high thermal sensitivity, excellent contrast and resolution of a projected image and because reversible formation/erase of the image is possible. When the original drawing is formed through electrophotographic transfer system, an entirely white and opaque original drawing is obtained temporarily through heating in thermal fixing process, thereby an easy to see image is obtained and over-exposure or under exposure can be judged easily. |
