Patent EP0248450A2 successfully refreshed from Google Patents.
EP0248450A2
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EP
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Method for processing silver halide photosensitive materials and apparatus therefor
Assignee: Fujifilm Holdings Corp
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Filing: 1987-06-05
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Granted: —
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Expires: 2007-06-05
Abstract
Abstract In a method for processing silver halide photosensitive materials comprising developing an exposed silver halide photosensitive material, fixing the developed material and washing it with a washing water, the amount of calcium and magnesium compounds present in the replenishing washing water is reduced to not more than 5 mg/l on the basis of the weight of elemental calcium or magnesium and washing water is replenished in an lamount of I to 50 times the volume of liquid carried over by the photosensitive material from a bath preceding the washing bath per unit area thereof or that the replenishing washing water is introduced into a washing bath after reducing the amount of calcium and magnesium compounds to the range mentioned above and sterilizing Ithe same. The method makes it possible to substantially reduce the amount of washing water while reliably suppressing turbidity and proliferation of microorganisms in the washing water during and after completion of processing.
Inventors
- 👤 Akira C/O Fuji Photo Film Co. Ltd. Abe
- 👤 Yoshihiro C/O Photo Film Co. Ltd. Fujita
- 👤 Toshio C/O Photo Film Co. Ltd. Koshimizu
- 👤 Kazuhiro C/O Photo Film Co. Ltd. Aikawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 11:32
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/3046
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
105 words
I. In a method for processing silver halide photosensitive materials which comprises developing an exposed silver halide photosensitive material, fixing the developed photosensitive material and then washing it with a washing water, the method comprising that the washing water is replenished in an amount of I to 50 times the volume of liquid carried over by the photosensitive material from bath preceding the water washing bath per unit area thereof and that the amount of calcium and magnesium compounds present in the replenishing washing water is reduced to not more than 5 mg/I, respectively, on the basis of the weight of elemental calcium or magnesium.
Claim 2
Independent Claim
41 words
A method for processing as set forth in claim I wherein the water washing process is a multistage washing system comprising at least two water washing baths and replenishment of the washing water is carried out according to multistage countercurrent system.
Claim 3
Independent Claim
66 words
A method for processing as set forth in claim I wherein the washing water is passed through a column packed with an ion exchange resin or treated with an apparatus for reverse osmosis to reduce the amount of calcium and magnesium compounds present in the replenishing washing water to not more than 5 mg/l, respectively, on the basis of the weight of elemental calcium or magnesium.
Claim 4
Independent Claim
42 words
A method for processing as set forth in claim I wherein the amount of calcium and magnesium compounds present in the replenishing washing water is not more than 3 mg/I, respectively, on the basis of the weight of elemental calcium or magnesium.
Claim 5
Independent Claim
42 words
A method for processing as set forth in claim I wherein the amount of calcium and magnesium compounds present in the replenishing washing water is not more than 2 mg/I, respectively, on the basis of the weight of elemental calcium or magnesium.
Claim 6
Independent Claim
50 words
A method for processing as set forth in claim I wherein the replenishment of the washing water is carried out in an amount of 3 to 30 times of the volume liquid carried over by the photosensitive material from the bath preceding the water washing bath per unit area thereof.
Claim 7
Independent Claim
30 words
A method for processing as set forth in claim I wherein at least one bath among the water washing baths and a replenishing tank therefor is irradiated with ultraviolet light.
Claim 8
Independent Claim
24 words
A method for processing as set forth in claim I wherein the fixing is carried out with a fixing solution or a bleach-fixing solution.
Claim 9
Dependent Claim
108 words
In a method for processing silver halide photosensitive materials which comprises developing an exposed silver halide photosensitive material, fixing the developed photosensitive material and then washing it with a washing water, the method comprising that the washing water is replenished in an amount of I to 50 times the volume of liquid carried over by the photosensitive material from bath preceding the water washing bath per unit area thereof and that the amount of calcium and magnesium compounds present in the final bath in the water washing process is reduced to not more than 5 mg/I, respectively, on the basis of the weight of elemental calcium or magnesium.
Claim 10
Dependent Claim
41 words
A method for processing as set forth in claim 9 wherein the water washing process is a multistage washing system comprising at least two water washing baths and replenishment of the washing water is carried out according to multistage countercurrent system.
Claim 11
Dependent Claim
71 words
II. A method for processing as set forth in claim 9 wherein the washing water is passed through a column packed with an ion exchange resin or treated with an apparatus for reverse osmosis to reduce the amount of calcium and magnesium compounds present in the final bath in the water washing process to not more than 5 mg/I, respectively, on the basis of the weight of elemental calcium or magnesium.
Claim 12
Dependent Claim
91 words
In a method for processing silver halide photosensitive materials which comprises developing an exposed silver halide photosensitive material, fixing the developed photosensitive material and washing it with washing water, the method comprises that the amount of calcium and magnesium compounds present in the replenishing washing water used in the water washing process is reduced to not more than 5 mg/I, respectively, on the basis of the weight of elemental calcium or magnesium, the replenishing washing water is sterilized and then the replenishing washing water is introduced into a water washing bath.
Claim 13
Dependent Claim
42 words
A method for processing as set forth in claim 12 wherein the amount of calcium and magnesium compounds present in the replenishing washing water is not more than 3 mg/I, respectively, on the basis of the weight of elemental calcium or magnesium.
Claim 14
Dependent Claim
42 words
A method for processing as set forth in claim 12 wherein the amount of calcium and magnesium compounds present in the replenishing washing water is not more than 2 mg/l, respectively, on the basis of the weight of elemental calcium or magnesium.
Claim 15
Dependent Claim
52 words
A method for processing as set forth in claim 12 wherein the washing water is replenished to the water washing bath in an amount of I to 50 times of the volume of liquid carried over by the photosensitive material from a bath preceding the water washing bath per unit area thereof.
Claim 16
Dependent Claim
36 words
A method for processing as set forth in claim 12 wherein the calcium and magnesium compounds are removed by treating the replenishing washing water with an ion exchange resin, zeolite or an apparatus for reverse osmosis.
Claim 17
Dependent Claim
45 words
A method for processing as set forth in claim 12 wherein the sterilization of the replenishing washing water is carried out by adding an antibacterial or antifungus agent thereto or filtering it through a filter having an effective pore size of not more than 0.8/L.
Claim 18
Dependent Claim
42 words
A method for processing as set forth in claim 17 wherein the antibacterial or antifungus agent is at least one member selected from the group consisting of active halogen atom-releasing compounds, isothiazolone type compounds, benzoisothiazolone compounds, organoarsenide compounds and silver ion-releasing compounds.
Claim 19
Dependent Claim
37 words
A method for processing as set forth in claim 18 wherein the antibacterial or antifungus agent is at least one active halogen atom-releasing compound and the amount thereof falls within the range of 0.1 to 100 mg/I.
Claim 20
Dependent Claim
36 words
A method for processing as set forth in claim 18 wherein the antibacterial or antifungus agent is at least one silver ion-releasing compound and the amount thereof falls within the range of 0.005 to 10 mg/I.
Claim 21
Dependent Claim
22 words
A method for processing as set forth in claim 17 wherein the filter has a pore size of not more than 0.5u.
Claim 22
Dependent Claim
22 words
A method for processing as set forth in claim 17 wherein the filter has a pore size of not more than 0.3u.
Claim 23
Dependent Claim
34 words
A method for processing as set forth in claim 12 wherein the washing process is carried out subsequent to a process capable of fixing and the photosensitive material is a color photographic photosensitive material.
Claim 24
Dependent Claim
79 words
In an apparatus for processing a silver halide photosensitive material which comprises a bath for developing the photosensitive material exposed to light, a bath for fixing the developed photosensitive material and baths for water washing, the apparatus comprising a means for reducing the amount of calcium and magnesium compounds in the replenishing washing water fed to the final water washing bath to not more than 5 mg/I, respectively, on the basis of the weight of elemental calcium or magnesium.
Claim 25
Dependent Claim
29 words
An apparatus for processing as set forth in claim 24 wherein the means is a column packed with an ion exchange or a'zeolite or an apparatus for reverse osmosis.
Claim 26
Dependent Claim
21 words
An apparatus for processing as set forth in claim 24 wherein it further comprises a means for sterilizing a washing water.
Claim 27
Dependent Claim
43 words
An apparatus for processing as set forth in claim 26 wherein the means for sterilizing is an ultraviolet light irradiating device or an apparatus for filtering the replenishing washing water provided with a filter having a pore size of not more than 0.8µ.
Claim 28
Dependent Claim
24 words
An apparatus for processing as set forth in claim 24 wherein the water washing bath comprises a plurality of baths of multistage countercurrent system.
References Cited (Backward Citations)
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