| 摘要 |
A film cut into a screen is correctly and easily fitted onto a slide mount. For this purpose, the slide mount is formed by joining a mount and a cover together, and windows are opened in the central portions of the mount and the cover, respectively. A film-placing portion is provided surrounding the window of the mount, and positioning pins are studded at four corners of the film-placing portion so as to be corresponded to engaging holes at both side portions of the film. Positioning holes are perforated in the periphery of the window of the cover at positions opposed to the positioning pins. The film is placed on the film-placing portion, and the positioning holes of the cover are brought into engagement with the positioning pins of the mount while the cover is being depressed onto the film. Then, the engaging holes of the film engage with the positioning pins, and the film is correctly fitted onto the slide mount.
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