BACK FILM

• Main Authors: OSHIRO MASAHIRO, SUZUKI YUKITO
• Format: Patent
• Language: English
• Published: 14.09.1990
• Subjects: AUXILIARY PROCESSES IN PHOTOGRAPHY; CINEMATOGRAPHY; ELECTROGRAPHY; HOLOGRAPHY; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES; PHOTOGRAPHY; PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHYSICS

PURPOSE:To allow taking out of sheet films while the films are packaged by each sheet and light shielded in bags simply by drawing out leader paper by providing an engaging means for drawing out the sheet film unit in the state of being superposed on a light shielding part and a means for adhering a back sheet and the light shielding part. CONSTITUTION:The light shielding part 29 housed between a pressure plate 12 and a bottom cap 11 is drawn out and is moved onto the sheet film 21. The exposed sheet film unit 18 which is superposed on the light shielding part 29 is then successively drawn out at the time when the light shielding part 29 is drawn out of a drawing out port. The sheet film 21 is pressurized or heated during this time and is enveloped by the back sheet 19 and the light shielding part 29, by which the light shielding state is established. The leader paper 24 is alternately arranged with exposing parts 27 and the light shielding parts 29 and the number of the arrangements is previously mated with the number of the sheet films 21, by which the drawing out and light shielding of plural sheets of the sheet films 21 are enabled. The sheet films are less bulky at the time of carrying and the taking out of the photographed sheet films by each piece in the completely light shielded state is possible even in the case of a large number of photographing times.