Photography – Fluid-treating apparatus – Having fluid-circulating means
Patent
1996-12-13
1998-05-19
Mathews, A. A.
Photography
Fluid-treating apparatus
Having fluid-circulating means
396630, G03D 306
Patent
active
057549150
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL ART
This invention relates to an automatic developing machine for photosensitive materials and a photographic processing solution replenishing apparatus having a reduced size, improved workability, highly improved chemical and stability and a reduced replenishment requirements.
BACKGROUND OF THE INVENTION
A silver halide photosensitive material (hereinafter sometimes referred to as a sensitive material or a photographic material), after being exposed, is subject to processes including development, desilverization, cleaning, and stabilization. In the development process, a black and white developing solution or a color developing solution is employed; in the desilverization process, a bleaching solution, a bleach fixing solution, and a fixing solution are employed; in the cleaning process, tap water or ion exchange water is employed; and in the stabilization process, stabilizing solution is employed. The solutions for carrying out these processes are known as photographic processing solution.
The processes can be carried out by an automatic photosensitive material developing machine (hereinafter sometimes referred to as an automatic developing machine), which allows a sensitive material to be sequentially transferred through tanks containing the above photographic processing solutions. The term automatic photosensitive material developing machine used herein refers generally to a developing machine including a development section, desilverization section, a cleaning or stabilization section, and a drying section and further including means for automatically transferring the photosensitive material in order.
For carrying out these processes with the automatic developing machine, a photographic processing solution replenishment system is in common and wide use to keep the activity of photographic processing solutions in the tanks constant. Specifically, a required amount of replenishing solution is supplied from each replenishing tank to each tank at appropriate times so as to ensure the proper functioning of the respective of the processes. In this system, it is common that the replenishing solutions themselves to be stored in the replenishing tanks are produced in a different location from the replenishing tanks and are supplied to the tanks as needed. In addition, the following manual steps are generally performed.
Photographic processing solutions for a silver halide photosensitive material (hereinafter sometimes referred to as a photographic processing solution), which are commercially available in the form of powder or concentrated liquid, are prepared into adequate solution for practical use by manually dissolving the concentrated powder in a required amount of water or diluting the concentrated liquid with a required amount of water. Some replenishing tanks are placed alongside the photosensitive material developing machine and require substantive space for placement of them. Further, the recently increasingly popular mini laboratory is structured so that the replenishing tanks are incorporated in the automatic photosensitive material developing machine, but it is still required to find room for placing the replenishing tanks in the machine.
If the automatic developing machine is modified such that the processing tanks in which the processing solutions for treating silver halide photosensitive material are stored are associated with dissolution tanks in such a manner that solid processing solutions can be supplied to and dissolved in the dissolution tanks according to consumption of the processing solutions, the following results can be acheived: that the automatic developing machine is downsized; that the manual work for dissolution is eliminated; that processing system is improved in stability of photographic performance; and that low-pollution system is achieved which is capable of saving or eliminating the use of plastic containers which are in general use for storing the photographic processing solutions.
In this modification, when a solid processing solution supplying section is lo
REFERENCES:
patent: 5318061 (1994-06-01), Saito
patent: 5351103 (1994-09-01), Komatsu et al.
patent: 5400105 (1995-03-01), Koboshi et al.
patent: 5452045 (1995-09-01), Koboshi et al.
Hakamada Haruo
Ishii Hideo
Kojima Masayuki
Masuda Shigeru
Nakanishi Masayuki
Mathews A. A.
Noritsu Koki Co., Ltd.
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