Abstract: A roll film magazine frame for supporting a film spool which receives a roll film and for inserting through an insertion opening into a shaft of a micro roll film reading device, the roll film magazine frame comprises a polygonal body part having a plurality of sides and a plurality of corners each between two adjacent sides, the body part having a recess provided in one of the sides for introducing a film from a film coil into the reading device, an opening provided in another side for introducing a friction member of the reading device for contacting a roll film on the film spool, the side of the body part including a further side which is accessible from outside when the magazine frame is inserted in the shaft, the further side being formed as a cover which is turnable outwardly away of a remaining portion of the body part so as to allow withdrawal of the film spool from the body part and insertion of another film spool into the body part.

Abstract: A continuous microfilming camera wherein the film is trained over a large driven roller so that its emulsion-coated side faces a lens which is installed in a tubular mount. The roller is rotatable about a fixed axis and the mount is reciprocable in the housing of the camera substantially radially of the roller. Two positioning rolls at the front end of the mount contact the emulsion-coated side of that portion of the film which is trained around the roller and are biased against the emulsion-coated side by springs which react against the housing and bear against the mount. The rolls are disposed at the opposite sides of the optical axis of the lens, and the driven roller cooperates with two guide rollers which insure that the film is trained over the major part of the peripheral surface of the driven roller.