| 摘要 |
An image strip on a long film can be efficiently magnified and printed on a long photosensitive material by making run a film in the direction falling at right angles with optical axis at the light source side, making run a photosensitive material in a contrary direction to the direction in which the film is running at the exposuring side, and exposuring the photosensitive material by the light passing through a slit which is set near by the surface of the photosensitive material and the longitudinal axis of the slit falls at right angles with the direction in which the photosensitive material is running, wherein running speed of the film is equal to a chosen multiple of the running speed of the film.
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