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System and method for flushing and processing photographic material including recovery of washing water

A photographic material and water washing technology, which is applied in the direction of photosensitive materials, processing equipment, liquid processing equipment, etc., can solve the problems of reducing volume and weight, and achieve the effect of reducing waste and rapid processing

Inactive Publication Date: 2002-06-12
EASTMAN KODAK CO
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  • Description
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Problems solved by technology

[0009] The invention solves the problem of reducing the volume and weight of the washing water provided by the self-sufficient photographic film processor for processing a certain amount of photographic material

Method used

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  • System and method for flushing and processing photographic material including recovery of washing water
  • System and method for flushing and processing photographic material including recovery of washing water

Examples

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Embodiment 2

[0107] This is an embodiment of the present invention.

[0108] In this example, a portion of the water used in the water wash stage is recovered by ion exchange. The residual amount of ammonium thiosulfate in the 3.28 ml / length meter of fixer in the film and processing chamber is 264*1 / 1000*3.28=0.866 grams / length meter. While it is possible to remove it all by ion exchange, large quantities of ion exchange resin are required. A more economical utilization of the ion exchange resin is possible if a first water washing stage is performed and the water of this stage is drained off. Use the flushing cycle indicated in Table (8). The developing solution, bleaching solution and fixing solution are the same as in Example 1 above.

[0109] Table (8) Flushing cycle (B)

[0110] Develop 30 seconds 19.7ml / length meter 35mm film

[0111] Stop display for 10 seconds 13.1ml / length meter

[0112] remove liquid

[0113] Bleach 30 seconds 19.7ml / length meter

[0114] remove liquid

...

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Abstract

The present invention relates to a method and system for reusing a washing solution within a processor for processing photographic material. In the method and system of the present invention, sequential washing stages are applied to the processor. During one of the wash stages, and preferably a wash stage subsequent to an initial a first wash stage (a second wash stage), a volume of washing solution which is greater than the washing solution applied in the first wash stage is applied. The washing solution applied in the second or subsequent wash stage is subject to a chemical treatment such as an ion exchange, and is thereafter, recycled back to the processor for reuse in processing photographic material and / or cleaning the components of the processor.

Description

technical field [0001] This invention relates generally to processing methods for silver halide photographic elements, and more particularly to the recycling of water sources, especially washing water, in processors for photographic processing. Background technique [0002] Especially for small scale dispersed photofinishing facilities or independently operated facilities, it is desirable to reduce the number and complexity of human intervention required to process photographic film. One way to achieve this is to package the processing solution in the form of a concentrate, which is then manually mixed with water or automatically mixed by a processor to provide a solution concentration of effective concentration. The Kodak SM system automatically doses these concentrates into the processor and adds water, eliminating the need for chemical mixing by an operator. The machine still needs to be supplied with water on a regular basis, but this type of film processor is basically...

Claims

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Application Information

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IPC IPC(8): G03D3/00G03D3/06
CPCG03D3/065
Inventor P·J·特维斯特N·R·威尔德曼
Owner EASTMAN KODAK CO
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