Abstract: The slide frame is made of elastic plastic and has an entrance slit which is adapted to be expanded throughout the width of the transparency to be inserted. The frame is formed at its opposite end with an additional expansible slit, which is also adapted to be expanded throughout the width of the transparency to be inserted and to such an extent that the two frame portions defining said additional slit do not obstruct the complete insertion of the transparency into the frame, and the film bed is constricted by a clamping rib, which is formed at and extends along a picture gate defining edge which extends at right angles to the direction in which the transparency is inserted into the frame. The slide frame comprises two frame members having broadsides facing each other.

Abstract: A integral plastic frame for holding a film slide includes a central window, a recessed bearing surface, which surrounds the window and serves to contact the film slide when it has been inserted to cover the window. The transparency as it is inserted and in its final position is guided between the bearing surface and the retaining elements facing the bearing surface. The retaining elements substantially consist of continuous retaining strips, which extend in the direction in which the film slide is inserted. The retaining strips are attached to mutually opposite sides of a central window of the integral frame member by means of narrow connecting webs, which extend at right angles to the direction in which the film slide is inserted. The plastic material of the frame member is so elastically flexible that an opening through which the film slide can be inserted is formed between the retaining strip and the bearing surface.

Abstract: A method of automatically detecting the locations of the frame lines of a reversal film as it is supplied to a processing station, such as a cutting and mounting station, a notching station or the like, so that the frame lines can be used as reference marks for the positioning of the film in the processing station wherein the film is moved past optoelectronic scanner in steps which amount to only a fractional part of the normal width of a frame line. The scanner generates an analog voltage which represents the accumulated light transmission of the film in a scanned area, which extends at right angles to the direction of travel of the film substantially across the picture area of the film and has a width which is only a fractional part of a normal width of a frame line. The extreme value of the voltage obtained during a scanning of at least one normal frame length and corresponding to the lowest light transmission is evaluated as a representation of the light transmission of the scanned film at a frame line.

Abstract: A method of inserting a slide into a frame of elastic plastic, including expanding the frame at two opposite edges. Inserting of the slide and/or the fixing of the slide in position relative to the picture gate is facilitated in that the frame is expanded at both of two opposed edges as the slide is inserted. The slide which has been inserted to its position for projection is fixed with utilization of the elasticity of the plastic in that the expanding of the frame is terminated.

Abstract: Methods are proposed for automatically framing slides in a framing apparatus, wherein the slides are subjected at a framing station at the leading end of the slide film passing through the framing apparatus to a framing cycle which comprises individual severing together with introduction in a ready-positioned frame and subsequent transmission of the framed slide to a storage box. One of the disclosed methods is conducted with the aid of marginal notches applied to the slide film by a preceding automatic notcher as a positional criterion for the slides and the other is conducted without regard to such notches. Both methods provide for scanning the spacer strips between slides by means of a scanning apparatus and special evaluation of the information thus obtained, possibly having regard to the notch spacing, in a manner such that a destruction of slides by wrong cuts is avoided.

Abstract: This invention relates to a device for expanding the entrance slot of a plastic slide frame having at least one resiliently expandable entrance slot, which device comprises two noses, which are arranged to engage the top surfaces of frame edge portions disposed laterally of the entrance path for the slide, and a ramp, which is spaced from said noses. In order to permit such a device to be operated without a need for a special protection against fingerprints, the device comprises a feeding pusher for pushing the slide through the expanded entrance slot.

Abstract: A developed photographic film strip having protective foil on both sides is releasably connected to the foil at one margin of the film strip by pressure-sensitive adhesive, the other margin projecting from the foil so as to be accessible.