Advancing material of indeterminate length – By intermittent material-mover – Comprising material-moving roll
Patent
1985-08-22
1987-12-01
Mathews, A. A.
Advancing material of indeterminate length
By intermittent material-mover
Comprising material-moving roll
354324, 226189, G03D 302, G03D 308
Patent
active
047100095
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a phototechnical apparatus of vertical arrangement for continuous development of photographic materials, particularly photographic plates, comprising between an input and an output terminal a series of at least two modules of vertical arrangement and a forwarding unit between each pair of modules, wherein each module includes passing rolls arranged along three vertical columns and a reversing roll in the lower part of the module connected to two of the columns. The invented apparatus renders possible the continuous development of different photographic materials such as photographic plates and flat films in a way whereby space and chemicals can be saved.
A part of the known apparata for continuous development of photographic materials is constructed on the basis of modules. The chemicals needed for different development operations are placed in different vessels constituting modules, wherein cylindrical rolls forward the photographic material. The number of rolls, the length of the path and the speed of travel in the module defined by the rolls determine the time during which the material to be developed resides in the module. During this time the chemical medium of required quality and heated to a required temperature ensures the chemical processes needed for development. The chemicals are preferably circulated in modules and they are generally renewed by means of regenerating media.
The construction of the known apparata shows generally the intention to limit the space and especially the basic surface required. This aim follows from the fact that the basic surface of the apparata should be decreased in order to make possible their use in rooms of limited area. Another aim is to limit the amount of chemicals needed during processing, i.e. to develop as much photographic material as possible by the use of a given amount of chemicals. In order to save space and ensure the best conditions of development, the rolls are arranged with horizontal axes during work for fitting and forwarding the photographic materials. A device of the above-described construction is shown e.g. in the West-German Laid-Open Patent Publication DE-AS No. 27 40 650, FIG. 1 of which is a schematic view of a vertically arranged module. The module comprises passing rolls arranged along three vertical columns and includes a reversing roll beneath the level of the two extreme columns in the lower part of the module. The input and the output of the module can be connected to a forwarding unit comprising a forwarding roll. The forwarding unit serves for leading the photographic material to be developed from one module to the other and for carrying out, if desired, chemical or other operations which may take place in a relatively short time. The modules are arranged so that they comprise the forwarding units between each pair of modules. This means that an apparatus for developing color photography materials--it should contain generally three modules--has the width of three modules and two forwarding units at least.
SUMMARY OF THE INVENTION
The present invention is directed to a phototechnical apparatus of vertical arrangement for continuous development of different photographic materials, whereby the desired phototechnical operations can be carried out in a manner that saves space and chemicals. The invention is based on the recognition that the modules need not be separated from each other and that they comprise much unused space which can be put to good use by advantageous arrangement of the passing rolls.
According to the invention in a photographic apparatus of vertical arrangement, comprising an input terminal and an output terminal, with at least two vertically arranged modules therebetween and forwarding units connecting the modules, wherein each module includes passing rolls arranged along three vertical columns, the passing rolls being arranged with horizontal rotational axes, it is a very useful improvement to arrange the modules adjacent to one another and to design them with
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Mathews A. A.
Meller Michael N.
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