Photocopying – Projection printing and copying cameras – Detailed holder for photosensitive paper
Patent
1995-07-28
1997-09-16
Grimley, Arthur T.
Photocopying
Projection printing and copying cameras
Detailed holder for photosensitive paper
355 30, 355 72, 355 74, G03B 2752, G03B 2758, G03B 2760, G03B 2764
Patent
active
056686250
ABSTRACT:
An apparatus and method for handling photographic film within the print-exposure section of a photographic printer. A mask matches the film frame (negative) and has a window for the passage of the exposure light. The mask also has holes through which air can be directed onto the film. A guide for the edges of the film parallels, and demarcates a gap with the mask. A source of air under either overpressure or underpressure supplies such air to the mask (4) and the film (1) through the air-direction openings (15). The air is supplied with overpressure while the film is being advanced. The air is supplied with underpressure while the print is being exposed to clamp the film.
REFERENCES:
patent: 2443171 (1948-06-01), Tuttle
patent: 4378155 (1983-03-01), Nygaard
patent: 4619526 (1986-10-01), Hougaard
patent: 5404195 (1995-04-01), Nagel
Bocklisch Siegfried
Fielder Wolfgang
Leuschner Rainer
Reichel Wilfried
Treiber Helmut
Agfa-Gevaert Aktiengesellschaft
Grimley Arthur T.
Kerner Herbert
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