摘要:
A device for producing photographic exposures of images appearing on an image screen onto a film platform carrying a plane film comprises a support holding a number of objectives and displaceable parallel to the axis extending through the central point of the image screen and the central point of the film platform. The platform carries one objective fixed to the platform of one magnifying property and four additional objectives which have such magnifying properties that each of them projects the picture field area of the screen on only one fourth of the usable film surface.
摘要:
The apparatus for packing cylindrical stacks of a plurality of disk-like workpieces, particularly covers, positioned beside each other with equal numbers of workpieces, in a jacket made of wrapping paper has at least one receiving trough for the stacks and clamping rails movable laterally into a raised position and raisable and lowerable as well as movable toward each other associated with it for transferring the stack into a wrapping station provided laterally beside the receiving trough with drivable supporting rollers for the stack. At least one pressing roll running parallel to the supporting rollers is lowerable in the wrapping station to the stack and a longitudinally movable carriage is provided with a pressure-limiting contacting member for pressing the stack against a fixed support. A carriage-mounted cutter for cutting away the edge of the paper wrapped around the stack is located on the carriage. The carriage and the support are equipped with folding fingers for forming closed rosettes and mechanisms for applying adhesive closing strips to the rosettes.
摘要:
A device for loading and unloading an X-ray film cassette comprises a housing which has a light-proof closable compartment receiving a film cassette and provided with a sucker for removing a film from and inserting a new film into the cassette, a device for determining a format of the cassette being loaded and unloaded, and a plurality of compartments accommodating film dispensing magazines containing film stacks of different formats. The loading device further includes a control for controlling movements of the dispensing magazines and a drive arrangement provided for each of the compartments for moving an assigned dispensing magazine in an open position thereof from the respective compartment to a region of the transport rollers and back into the respective compartment.
摘要:
An apparatus for processing of sheet films, comprises developing means for developing sheet films and provided with a plurality of chambers through which the sheet films are movable; pumping means for pumping a processing material; drawer receiving compartment; at least one drawer provided with a plurality of containers for liquids required by the developing means and formed so that upon insertion of the drawer into the receiving compartment a communication is established between the pumping means and a respective one of the containers.
摘要:
A device for wet porocessing of photographic films comprises a film processing device and a storage container for storing a processing liquid supplied to the film processing device. The film processing device has a housing which is formed as a container in which a bath of the processing liquid is located and through which a film base is guided by means of rotary inlet rollers, rinsing rollers and squeezing rollers. The pair of rinsing rollers are each positioned in a cage which is extended to form a liquid-distributing channel connected to a respective feeding conduit leading from the storage container. A conduit system for continually renewing the processing liquid in the device is provided.
摘要:
Apparatus for transferring sheets from a relatively wide or relatively narrow stack of sheets into a transporting device has a pair of suction cups which engage the leader of the topmost sheet in the stack and turn it through 90.degree. so that the leader becomes separated from the leader of the sheet therebelow. The suction cups are thereupon raised to the level of the nips of driven advancing rolls in the transporting device to move the leader into a plane which includes the nips and is parallel to the planes of sheets in the stack, and such leader is introduced into the nips so that the advancing rolls engage the leader while the latter becomes detached from the suction cups. The suction cups engage only a portion of the leader of a relatively wide sheet, and the remainder of the leader is flexed with the engaged portion to ensure that it enters a path which is defined by additional advancing rolls of the transporting device simultaneously with entry of the engaged portion of the leader into the nips of the driven advancing rolls. The apparatus can be used with advantage for removal of successive topmost X-ray films from a stack of films regardless of the width and/or height of the stack. The suction cups descend from the level of the nips to the level of the topmost sheet in the stack as soon as the transfer of the preceding sheet is completed and along a path such that each of a series of successive properly stacked sheets is engaged at the same distance from its leading edge.
摘要:
A cassette with two chambers for discrete cut films has a centrally disposed plate-like partition with two identical sides, and a pair of identical covers each of which is adjacent to a different side of the partition and is pivotably attached to the partition by a hinge for movement between an open and a closed position. The covers have exposure apertures and carry slidable plate-like shutters which can slide in slots of the respective covers to permit or prevent entry of light by way of the respective apertures. The film chambers are separated from each other by the central portion of the partition, and the latter further carries locks for releasably holding the covers in their closed positions. The lock for one of the covers is provided at that side of the partition which is adjacent to the other cover, and vice versa. The hinge or hinges for one of the covers are provided on a first marginal portion of the substantially rectangular partition, and the lock for such one cover is provided on a second marginal portion which is parallel to the first marginal portion. The hinge or hinges and the lock for the other cover are respectively provided on the second and first marginal portions of the partition.
摘要:
Apparatus for developing latent images of X-rayed objects on dielectric receptor sheets has a carrier which advances receptor sheets along a circular path about a horizontal axis. A tank with an open top is installed below the six o'clock position of the carrier and contains a horizontal developing electrode having narrow elongated channels extending in parallelism with the axis of the carrier. A pump draws liquid developer from a vessel in which the tank is confined and admits the developer into the bottom zone of the tank wherein the developer rises to fill and flow above the channels of the electrode and to thereby contact the latent image of a sheet on the moving carrier. The surplus of liquid developer overflows the upper edge of the tank and returns into the vessel. The electrode is movable up and down by rotary eccentrics to thereby influence the development of latent images, especially the development of outlines of dark portions of the images.
摘要:
A method of detecting movable cylindrical magnetic domains produced in a magnetic crystal film supported on a substrate in which a microwave signal is transmitted into a restricted region between two planar conductors by means of a ferrimagnetic resonance mode, and the presence of a domain is detected from the measuring signal variation when the echoes of elastic waves in the film vary.
摘要:
The invention relates to a continuous casting plant (1), in particular for the continuous casting of thin slabs, which has a vertically oriented strand guide (3) arranged below a mould (2), wherein means (4, 5) for driving the cast strand (6) and for bending the same into the horizontal (H) are arranged below the strand guide (3). In order to be able to extend the strand guide without any drawbacks, the invention provides for a means (4) for exclusively driving the cast strand (6) to be arranged below the bottom end of the strand guide (3) and for a means (5) for exclusively bending the cast strand (6) to be arranged below the driving means (4). The invention also relates to a method of operating a continuous casting plant.