G - Physics
03
B
G03B 21/64 (2006.01) G03C 1/765 (2006.01)
Patent
CA 2153359
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.
La présente invention permet de monter correctement et facilement un phototype positif transparent dans un cadre pour diapositive. La monture de diapositive, qui constitue l'invention, est formée de deux parties, l'une supérieure et l'autre inférieure, chacune percée d'une ouverture. Au pourtour de l'ouverture de la partie inférieure, un espace est prévu pour placer la pellicule, et chacun des quatre coins de cet espace porte un ergot de positionnement destiné à recevoir l'une des perforations se trouvant à l'un des quatre coins de la pellicule. Le pourtour de l'ouverture de la partie supérieure est perforée de quatre trous vis-à-vis les ergots de la partie inférieure. Il s'agit donc de placer la pellicule dans l'espace prévu à cette fin, puis de poser les trous de la partie supérieure sur les ergots de la partie inférieure, en poussant vers le bas. Les perforations de la pellicule et les ergots de positionnement s'engagent alors l'un dans l'autre, et la pellicule est montée correctement dans le cadre.
Inaba Minoru
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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