film gate

noun

(in motion-picture cameras and projectors) a mechanism that holds the film flat in the focal plane of the lens during exposure or projection.

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The top of the vessel was closed with a sheet of paraffin paper, which was placed in front of the aperture of the film gate.

Then it is led into the important device we call the 'film gate.'

C—Film gate where positive is held over negative for printing.

It is composed of an eccentric wheel placed below the film gate, with a little roller projecting from it.

He opened the film gate gingerly and removed the film from the sprockets.

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