THRUST-TYPE FILM CASSETTE ASSEMBLY

A new film cassette assembly (1) comprises a thrust type cassette (3) and a roll of a photographic film (33) having particular properties. One such property is a low coefficient of friction between the emulsion side and back side of the film. In preferred embodiments the film has a stiffness suffici...

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Bibliographische Detailangaben
Hauptverfasser:	KEMP, DAVID, BRUCE, MATTSON, CHRISTOPHER, THOMAS, DIETERICH, DAVID, A
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES THEREFOR APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM 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
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Beschreibung
Zusammenfassung:	A new film cassette assembly (1) comprises a thrust type cassette (3) and a roll of a photographic film (33) having particular properties. One such property is a low coefficient of friction between the emulsion side and back side of the film. In preferred embodiments the film has a stiffness sufficient to avoid buckling of the film when the film spool is rotated in the unwinding direction (11) and is very thin. Most preferably, it is formed from a hydrophilic copolyester having the desired stiffness. Un nouvel ensemble cartouche de film comprend une cartouche du type à poussée et un rouleau de film photographique ayant des propriétés particulières. Une de ces propriétés est le bas coefficient de frottement entre le côté émulsion et l'envers du film. Dans des modes préférés de réalisation, le film a une rigidité suffisante pour éviter qu'il gauchisse lorsque la bobine tourne dans le sens du déroulage, et il est très mince. De façon idéale, ledit film est constitué d'un copolyesther hydrophile ayant la rigidité voulue.