Abstract: Daylight loading packaging for photographic paper in the form of rolls comprising lateral, annular flanges and a casing lengthening piece welded to the flanges, which casing lengthening piece is connected at one end to the start of the paper roll and is free at the other end, the flanges presenting a concentric annular hole the edge of which is welded to the edge of the roll tube and which on one side of a paper base has at least one blackened layer forming a light barrier, at least one aluminium layer forming a vapour barrier, at least one layer which increases resistance to puncture, and furthest away from the paper base a layer which permits welding to the casing lengthening piece and the roll tube, and which has on the other side of the paper base a layer of a synthetic polymer applied by extrusion which imparts a tension to the material which prevents an inward collapse of the flange (seen from the roll).

Abstract: A granulate mixture containing at least three different granulates of solid constituents of a color photographic developer, one granulate containing the protective agent against oxidation, another granulate containing the developer substance and the third granulate containing the alkali donor, is pourable, produces no dust, rapidly dissolves in water, has unlimited durability and gives reliable, reproducible results on development.

Abstract: An exposed and developed filmstrip has a longitudinally extending row of image areas and a row of perforations along each longitudinal margin. The image areas and perforations have no fixed positional relationship. The filmstrip is conveyed lengthwise from a scanning station to an operating station. A procedure involving the filmstrip is performed at the operating station when an image area is present at such station. To establish the arrival of an image area at the operating station, the filmstrip is photoelectrically scanned at the scanning station to locate the leading edge of the image area. The leading edge is conveyed from a preselected location, which may or may not be the scanning station, to the oeprating station along a path of fixed length. The length of the path is expressed in terms of the spacing between neighboring perforations of a row and the arrival of the leading edge at the operating station is established by counting perforations as the filmstrip travels.

Abstract: A photographic developing apparatus has an elastic conveyor belt and at least one clamp which is designed to be mounted on the conveyor belt and to engage a strip of photographic material. The clamp has spaced gripping elements which define an opening of width less than that of the conveyor belt and are arranged to engage the marginal portions of the belt. A mechanism for mounting the clamp on the conveyor belt is also provided and includes a female die as well as a male die. The mounting mechanism additionally includes means for juxtaposing the clamp and the belt with one another in such a manner that the central portion of the belt and the opening in the clamp are each in register with a cavity in the female die while the marginal portions of the belt are movably confined between the clamp and support surfaces on the female die. When the clamp and the belt are thus positioned, the male die is moved into the female die. This causes the marginal portions of the belt to approach one another.

Abstract: A photographic printer or developing machine has a station for processing photographic material. A station for accommodating a mobile, carriage-like cassette in an operative position is disposed adjacent to the processing station on either side thereof. One of the operative stations receives a take-off cassette carrying a reel of photographic material to be processed while the other operative station receives a take-up cassette. An additional station for holding a replacement cassette in a ready position is located next to each of the operative stations. A propelling mechansm for pushing a cassette out of its operative position is provided at each operative station as is a drawing mechanism for pulling a replacement cassette from the ready position to the operative position.

Abstract: A microfilm pickup camera comprises a device for continually horizontally transporting originals to be projected in the camera through the camera, and an ink printing head for marking originals before they enter an exposure station provided in the camera. The ink printing head is provided with a drive which pivots, rotates and displaces the ink printing head between a use position, a cleaning position and a non-operative position. The printing head is EDV-controlled.

Abstract: In order to develop color-photographic images by the color diffusion process, a first cylindrical container (1) for receiving the aqueous-alkaline working solution (4) is provided having a threaded bushing (7) on its upper edge and a contact safeguard (5) under the bushing. A second container (2) for receiving the image-wise exposed mono-sheet material (10) to be developed is also provided which has a threaded core (9), by which it may be screwed into the threaded bushing (7) of the first container (1) and may be tightly sealed therewith. Development takes place according to the overturning method and may be carried out in a lightroom.

Abstract: A drying arrangement for strips or sheets of photosensitive material includes a pair of infrared heating rods which are located on opposite sides and extend transversely of the path of travel of the photosensitive material. A parabolic reflector is associated with each of the heating rods and serves to direct radiant energy from the same onto the photosensitive material. The heating rods lie at the focal points of the respective parabolic reflectors. Each of the reflectors has a symmetry plane which is inclined with reference to the path of the photosensitive material in such a manner that the line of intersection of the symmetry plane and the path is situated downstream of the location where a perpendicular from the focal point of the reflector to the path intersects the latter. By virtue of this arrangement, more radiant energy is directed to the upstream portion of the drying arrangement than to the downstream portion thereof. As a result, a thermal gradient exists in the drying arrangement.

Abstract: Cyan images may be prepared by the dye diffusion transfer process, using dye-releasers which on development release diffusible dyes capable of forming light-fast cyan metal-dye-complexes particularly with copper or nickel ions. As also the dye-releasers are capable of complexation, cyan images can be prepared not only from the released dyes but also from the dye-releasers ("retained image"). Released dyes and dye-releasers of the present invention contain a chromophor of the following formula: ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4, which may be the same or different, each represents --H, --F, --Cl, --Br, --CN, --NO.sub.2, --CF.sub.3, --OCF.sub.3, --SCF.sub.3, alkyl, alkoxy, alkylthio, acylamino, alkylsulfonyl, arylsulfonyl, --CO--X or --SO.sub.2 --Y or two adjacent groups R.sup.1 -R.sup.4 together constitute a condensed benzene ring which may contain further substituents;R.sup.5 represents hydrogen or a substituent having an electron donor character;R.sup.