| 摘要 |
A method and apparatus for continuously producing photographic film, comprises perforating film strip, applying characters to the perforated film strip as latent images, and cutting it into sized film strips. The photographic film strip withdrawn from a roll of film is perforated along its longitudinal margins and then provided with characters as latent images such as frame numbers, symbols and the like. After the provision of characters, the photographic film strip is cut into sized film strips which are thereafter wound into containers. The film moves continuously lengthwise from the time it is withdrawn from the supply roll, to the time it is rewound in the containers as sized film strips. In this way, the cost of equipment and labor is reduced.
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