Abstract: A lamina retrieval device for storing microfiche, holograms and other flat, sheet-like materials. A stack of laminae are retained in a cage formed by a plurality of guides, with the guides being so mounted as to retain the laminae in an angularly displaced disposition, with each lamina in a group of laminae being angled with respect to an adjacent lamina. To allow for the removal of a lamina, the guides may be formed as split pins so that part of each pin is movable to form an opening in the cage. The device can include fingers for holding a stack of laminae apart to allow removal of the desired lamina. Removal is accomplished in one embodiment through an airflow.

Abstract: A data recording device in which an emitter, normally an electron gun, is mounted within an evacuatable tube into which a sensitive recordable film may be introduced so that no part of the tube interposes between the emitter and the area of the film to be recorded. The film may be held on a grid in the tube or on a separate platen. The invention avoids the interposition of glass and coating material between the emitter and film and so can record with finer detail on the film. Also the device is very suitable for fast film handling by conveying the film on a gas stream into the tube and away.

Abstract: A film lamina handling and storage device particularly suitable for handling microfiche has a central transfer area formed between upper and lower plates in which a cushion of gas is maintained to support film laminae on the cushion: the laminae may be moved around the area by gas flowing to outlets venting outwardly of the periphery of the plates; stores for individual or stacks of laminae are conveniently situated around the transfer area, the individual laminae stores being at the same level as the transfer area: the transfer area may have copying or other treatment positions.