Photocopying – Projection printing and copying cameras – With developing
Patent
1989-02-23
1991-05-28
Mathews, A. A.
Photocopying
Projection printing and copying cameras
With developing
354322, G03B 1750, G03D 312
Patent
active
050198572
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a process and device for the automated production of images on all types of photographic supports.
Numerous techniques have already been proposed for obtaining such productions, among which will only be mentioned:
the technique of reduced format instantaneous photography, using relatively simple mechanisms, and
the techniques used by development laboratories for professional use (centralized photographic laboratories, automatic photographic mini-laboratories, automatic apparatus for identity photos, machines, colour photocopiers on photographic paper), these machines comprising relatively complex and costly mechanisms, such as rolls, gears, etc. . . . : according to these techniques, the sensitive paper is delivered in the form of rolls, which involves the use of a mechanism for advancing the paper and for cutting it to the format, an exposure system operating during stoppage of the paper, etc. . . .
It is then apparent that between the seeming simplicity of instantaneous photography and the complexity of the above mentioned photographic laboratories, there exists a technical and commercial vacuum.
The invention has then more particularly as object to fill this vacuum, with a process for reducing to a minimum the mechanical parts required for the development of films and sensitive papers, while making it possible to obtain excellent performances.
Generally, this process is applied to the production of images on supports able to record latent images developable in an apparatus requiring displacements of said support, particularly for transferring these supports from one processing station to another.
This process is more particularly characterized in that said displacements are provided by a conveyor belt on which the supports are held in position by temporary adhesion.
Advantageously, this adhesion may be obtained by means of a permanent adhesive covering said conveyor belt at least partially, by a permanent adhesive covering said support at least partially or even by suction means equipping the belt.
Thus, the invention solves in a particularly simple way the problem of moving the supports inside the apparatus, these supports being either photographic films or papers with sensitive photographic surfaces.
Furthermore, such simplification may be considerably increased by using at least one of the following arrangements: which the sensitive surfaces as well as, possibly, containers containing the processing products to be used are previously disposed and adhere, sensitive surfaces, impressing the sensitive surfaces with an image.
Of course, the invention also relates to the apparatus for implementing the above defined process and embodiments of which will be described hereafter with reference to the accompanying drawings in which :
FIG. 1 is a vertical schematic sectional view of an automatic pocket photographic mini-laboratory,
FIG. 2 is a schematic view showing a conveyor belt partially unwound from a cartridge, this belt having in particular sensitive surfaces and processing product pockets,
FIG. 3 illustrates one embodiment of means which can be used for perforating the pockets adhering to the belt shown in FIG. 2, for releasing the processing products into their respective tanks,
FIG. 4 is the schematic representation of a variant for using the optical system of an enlarger or photographic apparatus so as to obtain enlargements,
FIG. 5 shows one embodiment of an apparatus for distributing sensitive surfaces over a conveyor belt,
FIG. 6 is a schematic representation of a distributor using a conveyor belt,
FIG. 7 is a schematic sectional view of a photographic apparatus using positive direct type sensitive surfaces transported by a belt,
FIG. 8 is a schematic sectional view of an enlargement assembly formed from a photographic apparatus,
FIG. 9 illustrates one embodiment of a processing unit, in which the processing operations are carried out by means of aerosols from aerosol sprays,
FIG. 10 is a schematic representation of another embodiment of an apparatus according to t
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patent: 3500734 (1970-03-01), Lewis et al.
patent: 3550520 (1970-12-01), Lucas
patent: 3727815 (1973-04-01), Schwartz
patent: 4185912 (1980-01-01), Schwartz
patent: 4695143 (1987-09-01), Oshikoshi et al.
Caisse Regionale De Credit Agricole Mutuel De L'Yonne
Drucker William A.
Mathews A. A.
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