Microfilm camera
A microfilm camera with a suction plate which is provided for holding a sheet of film and which can be moved step by step across a film gate. The film gate is provided, on the bearing surface facing towards the sheet of film, with suction apertures. During each exposure operation, the suction apertu...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | A microfilm camera with a suction plate which is provided for holding a sheet of film and which can be moved step by step across a film gate. The film gate is provided, on the bearing surface facing towards the sheet of film, with suction apertures. During each exposure operation, the suction apertures can be connected up to a vacuum pump by means of a suction conduit. This suction conduit can be closed by a valve. |
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