| 摘要 |
The present invention relates to an apparatus for advancing a photographic film web for operation in a semi-automatic or automatic slide mounter. The apparatus advances the film for operation across a knife assembly to position the film with upper and lower knife blades of the knife assembly to sever a film transparency from the photographic film web to prepare a photographic slide. The apparatus includes a shuttle bridging mechanism for supporting the film, movable between a retracted position, out of alignment with the knife blades and an advanced position, extending across a support gap defined at the upper and lower knife blades. The shuttle bridging mechanism is advanced during operation to the advanced position and the film is advanced until a trailing edge of a leading film transparency aligns with the upper and lower knife blades. When the film is in place across the upper and lower knife blades, the shuttle bridging mechanism is retracted to permit the upper and lower knife blades to close to sever the film transparency.
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