会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 3. 发明授权
    • Image-carrying film for use as an original for projection and its manufacturing method
    • 用于投影的原始图像胶片及其制造方法
    • US3675013A
    • 1972-07-04
    • US3675013D
    • 1970-11-06
    • RICOH KK
    • KUBO KEISHISAKAI KIYOSHI
    • B41M5/36G01D15/10
    • B41M5/36
    • The invention relates to a diapositive polypropylene film transparency that is self-supporting and dimensionally stable to conditions of storage and use having at least 60 percent of parallel luminous transmittancy to visible light rays at a thickness of 50 Mu or more and a method of its manufacture which comprises placing a transparent undeveloped polypropylene film having a heat-shrinking coefficient less than 15 percent in both biaxial directions in juxtaposition with an infrared absorbing image and transmitting infrared irradiation through the polypropylene film to the original image to create on the film a corresponding light diffusive image comprised of fine undulations of the surface and low light transmittancy, the finished film being useful for projecting said image upon a reflecting screen as a corresponding unilluminated image in contrast to the corresponding transparent portion as an illuminated area.
    • 本发明涉及对具有至少60%的平均发光透过率至50μm以上的可见光的平行发光透过率的自支撑和尺寸稳定的二正性聚丙烯膜透明体及其制造方法 其包括将两个双轴方向的热收缩系数小于15%的透明未显影聚丙烯膜与红外吸收图像并置并将红外线照射通过聚丙烯膜发射到原始图像,以在膜上产生相应的光扩散 图像由表面的微小波动和低光透射度构成,成品膜可用于将反射屏幕上的图像作为相应的未发光图像投射到相应的透明部分作为照明区域。